WO2021064335A1 - Method for adjusting a position of a steering wheel in a steering system as a function of an angle formed between the arm and the forearm of the driver - Google Patents

Method for adjusting a position of a steering wheel in a steering system as a function of an angle formed between the arm and the forearm of the driver Download PDF

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Publication number
WO2021064335A1
WO2021064335A1 PCT/FR2020/051743 FR2020051743W WO2021064335A1 WO 2021064335 A1 WO2021064335 A1 WO 2021064335A1 FR 2020051743 W FR2020051743 W FR 2020051743W WO 2021064335 A1 WO2021064335 A1 WO 2021064335A1
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WO
WIPO (PCT)
Prior art keywords
steering wheel
driver
steering
computer
modification
Prior art date
Application number
PCT/FR2020/051743
Other languages
French (fr)
Inventor
Laurent Rey
Original Assignee
Jtekt Europe
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jtekt Europe filed Critical Jtekt Europe
Publication of WO2021064335A1 publication Critical patent/WO2021064335A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
    • B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
    • B62D1/16—Steering columns
    • B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
    • B62D1/181—Steering columns yieldable or adjustable, e.g. tiltable with power actuated adjustment, e.g. with position memory

Definitions

  • TITLE Method of adjusting a position of a steering wheel in a steering system as a function of an angle formed between the arm and forearm of the driver
  • the invention relates to the field of vehicle steering systems and more particularly to a method for adjusting a position of a steering wheel.
  • a steering system of a vehicle comprises several elements including said steering wheel connected to a steering column, a rack, and two wheels each connected to a link.
  • the rack is the part making it possible to connect the steering wheel, via the steering column, to the wheels, via the connecting rods; that is to say that the rack transforms the forces exerted by the driver on the steering wheel into a rotation of the wheels of the vehicle.
  • Certain steering columns make it possible to modify a position of the steering wheel relative to a chassis of the vehicle. More precisely, the steering column allows, on the one hand, a depth adjustment of the steering wheel, that is to say along an axis of elongation of the steering column, and on the other hand a height adjustment. , that is to say around an axis of rotation which extends transversely to the axis of elongation of the steering column.
  • the depth and height adjustments can be made by electric actuators controlled by a computer.
  • the comfort position of the steering wheel depends on a driving situation of the vehicle, that is to say on a type of journey made by the vehicle. For example, during a long straight line trip, it is more comfortable for the driver to have the arms extended and therefore for the steering wheel to be away from the chest. More precisely, during a long straight line trip, the comfort position is one in which an angle between the driver's arm and forearm is between 110 ° and 140 °, ideally 120 °.
  • the comfort position is that in which the angle between the driver's arm and forearm is between 80 ° and 100 °, ideally 90 °.
  • the object of the invention is to remedy all or part of the aforementioned drawbacks by proposing a steering system in which the position of the steering wheel adapts to the position of the driver in order to reach the position of comfort.
  • the subject of the invention is a method for adjusting a position of a steering wheel of a steering system of a vehicle, the steering system comprising at least one computer, a steering column on which the steering column is fixed. steering wheel, and at least one actuator adapted to modify the position of the steering wheel relative to a vehicle chassis, characterized in that the adjustment method comprises:
  • a modification step in which the computer actuates at least one actuator so as to modify the position of the steering wheel so that the angle formed between the arm and the forearm is within a predetermined range.
  • the driver's installation position is the position of the driver when the latter is seated on a driver's seat positioned opposite the steering wheel, and he positions his hands on the steering wheel.
  • the installation position is recorded when the driver positions his hands on a periphery of the steering wheel.
  • the installation position is therefore a position determined as a function of the driver, for example as a function of a build, of a length of the arms and of the legs of the driver.
  • the installation position is not associated with a driving situation.
  • the installation position is recorded when the vehicle is stationary.
  • the computer determines the angle formed between the driver's arm and forearm then performs the modification step so as to modify the position of the steering wheel so that said angle is within the predetermined range.
  • the modification step therefore makes it possible to modify the position of the steering wheel so that the driver is in a position of comfort, that is to say a position in which the angle formed between the arm and the forearm is within the predetermined range.
  • the method comprises a guiding step in which an incentive element indicates to the driver how to position himself in the installation position.
  • the incentive element describes to the driver the position he must take so as to be in the installation position.
  • the incentive element explains to the driver that he must be seated in the driver's seat and position his hands on the steering wheel, and more precisely on the periphery of the steering wheel.
  • the incentive element may be a display element, voice assistance, a film or any other means making it possible to transmit information to the driver.
  • the recording step produces an image of the installation position of the driver.
  • the determination step is carried out on the basis of an image of the driver.
  • Image processing software can therefore perform the determination step.
  • the image is produced by at least one camera or one camera.
  • the image of the installation position represents the driver in a side view.
  • a driver's side view is a view in which the driver is seen from the side so that when the driver positions his hands on the steering wheel, his arms extend in a plane perpendicular to a plane in which his body extends. torso. It is then easy to determine the angle formed between the arm and the forearm.
  • the shooting device or the camera is positioned on a chassis of the vehicle, or on a ceiling of the vehicle, or on an upright of the windshield, or on a door of the vehicle.
  • the modification step modifies an in-depth adjustment of the steering wheel.
  • the steering wheel is away or closer to the driver.
  • the modification step modifies a height adjustment of the steering wheel.
  • the steering wheel approaches or moves away from the driver's knees.
  • the modification step modifies a depth and height adjustment of the steering wheel.
  • the method comprises a definition step in which the predetermined range is chosen by the driver or by the computer.
  • the method can modify the predetermined range so as to best adapt the comfort position to the driver and to the intended route.
  • the predetermined range may vary depending on the route that the driver has planned to achieve or depending on the mood of the driver who may want the steering wheel to be closer or further away from him.
  • the modification can be carried out by the computer as a function of GPS data for example, or directly by the driver. In the latter case, the driver will determine an adjustment of the comfort position which will be associated with a predetermined range.
  • the predetermined range of a "sport" setting will be between 70 ° and 90 °
  • that of a "piloting” setting will be between 95 ° and 105 °
  • that of a "comfort” setting will be between 110 ° and 150 °.
  • the definition step allows adaptation of the predetermined range while ensuring that the steering wheel is in a position of comfort.
  • the method comprises a validation step in which the driver validates the modification step.
  • the validation step is performed after the modification step. This is a step in which the driver confirms that he is happy with the comfort position reached during the modification step.
  • the method comprises a detection step in which the computer detects a force opposing the modification of the position of the steering wheel and stops the modification of the position of the steering wheel.
  • the computer detects a force opposing the modification of the position of the steering wheel and stops the modification of the position of the steering wheel.
  • the modification of the position of the steering wheel is carried out with a speed of less than 30 mm / s.
  • the modification of the position of the steering wheel is carried out with a speed of between 5 and 15 mm / s.
  • the modification of the position of the steering wheel is carried out at a plurality of different speeds.
  • the invention also relates to a steering system of a vehicle comprising at least one computer making it possible to implement an adjustment method according to the invention.
  • FIG. 1 is a schematic representation of a driver of a vehicle in a comfort position
  • FIG. 2 is a schematic representation of the conductor in the absence of a method according to the invention.
  • FIG. 3 is a diagram showing a vehicle fitted with a method according to the invention
  • FIG. 4 is a schematic representation of a steering system.
  • the invention relates to a method for adjusting a steering wheel 3 of an assisted steering system 1 for vehicle 2, and more particularly for motor vehicle 2 intended for transporting people and in particular for transporting a driver 50.
  • the vehicle 2 comprises a frame 14 on which is fixed a seat 21 of the driver 50.
  • the frame 14 determines an axis of elongation X of the vehicle 2 and a vertical axis Z, transverse to the axis of elongation X and which is oriented. from the feet of the driver 50 towards the head of the driver 50. The top of the frame 14 is therefore towards the head of the driver 50 while the bottom is towards the feet of the driver 50.
  • said power-assisted steering system 1 comprises a steering wheel 3 which allows a driver 50 to maneuver said power-assisted steering system 1 by exerting a force, said " couple steering wheel ”T3, on said steering wheel 3.
  • An angle of rotation 03 of the steering wheel 3, hereinafter called the steering wheel angle, is measured by means of an angle sensor 23.
  • Said steering wheel 3 is preferably mounted on a steering column 4, guided in rotation on the vehicle 2, and which meshes, by means of a steering pinion 5, on a steering rack 6, which is itself guided in translation in a housing steering 7 attached to said vehicle 2.
  • the ends of said steering rack 6 are each connected to a steering rod 8, 9 connected to the knuckle holder of a steering wheel 10, 11 (respectively a left wheel 10 and a right wheel 11), so so that the longitudinal translational movement of the rack 6 makes it possible to modify the steering angle, that is to say the yaw angle, of the steered wheels.
  • the assisted steering system 1 also comprises an assistance motor 12 intended to provide an assistance force T12, and more particularly an assistance torque T12, to assist the maneuver of said assisted steering system 1.
  • the assistance motor 12 will preferably be an electric motor, with two operating directions, and preferably a rotary electric motor, of the brushless type.
  • the assistance motor 12 can engage, where appropriate via a reduction gear type gearbox, or on the steering column 4 itself, to form a so-called “single pinion” mechanism, either directly on the steering rack 6, for example by means of a second pinion 13 separate from the steering pinion 5 which allows the steering column 4 to mesh with the rack 6, so as to form a so-called “toggle” mechanism.
  • double pinion as illustrated in FIG. 4, or even by means of a ball screw which cooperates with a corresponding thread of said rack 6, at a distance from said steering pinion 5.
  • An angle of rotation Q12 of the assist motor 12, hereinafter called the motor angle, is measured by means of an angle sensor 24.
  • the steering system 1 comprises a computer 20 receiving a plurality of parameters from the vehicle 2 and in particular parameters from the assisted steering system 1 such as for example the steering wheel angle Q3 or the engine angle Q12.
  • a position of the steering wheel 3 relative to the chassis 14 of the vehicle 2 can be modified by means of two actuators.
  • a first actuator is called the telescopic actuator. It makes it possible to modify the position of the steering wheel 3 along an axis of elongation X4 of the steering column 4. This modification will be called a depth adjustment.
  • a second actuator is called the “tilt” actuator. It allows to modify the position of the steering wheel 3 around a axis of rotation Y4 which extends transversely to the axis of elongation X4 of the steering column 4. This modification will be called a height adjustment.
  • a modification in height and depth makes it possible to vary the position of the steering wheel 3 along the axis of elongation X of the vehicle 2 and along the vertical axis Z.
  • Figure 1 illustrates the driver 50 in a comfort position. In this position, the driver is seated on the seat 21 and has his back 51 pressed against the seat 21. An arm angle Q formed between the arm 52 and the forearm 53 of the driver is between 90 ° and 120 ° .
  • FIG. 2 illustrates the conductor 50 in the absence of the method according to the invention.
  • the driver 50 is too far from the steering wheel 3.
  • the driver 50 brings the bust of the steering wheel 3 so that the arm angle Q is between 90 ° and 120 °.
  • the driver takes off the back 51 of the seat 21. He is not in a position of comfort.
  • the method according to the invention allows automatic height and depth adjustment of the steering wheel so that the driver 50 is in a position of comfort.
  • the adjustment method according to the invention carried out by the computer 20 comprises a definition step in which a predetermined range is chosen by the driver.
  • the predetermined range corresponds to the range of the arm angle Q which will be used by the method according to the invention.
  • the predetermined range corresponds to the arm angle Q for which the driver 50 is in a comfort position.
  • the predetermined range can be chosen by the driver 50 so as to best adapt the comfort position to the driver 50 and to the planned route. Indeed, the predetermined range may vary depending on the route that the driver 50 has planned to achieve or depending on the mood of the driver 50 who may want the steering wheel 3 to be closer or further away from him.
  • the modification is carried out by the driver 50 by selecting a setting via the computer 20.
  • the possible settings of the comfort position are:
  • a "piloting" setting in which the arm angle Q will be between 95 ° and 105 ° so that the driver can easily perform both straight journeys and maneuvers.
  • a “comfort” setting in which the arm angle Q will be between 110 ° and 150 ° so that the driver has his arms extended so as to comfortably carry out long journeys in a straight line.
  • the definition step allows adaptation of the predetermined range while ensuring that the driver 50 is in a position of comfort.
  • the method then comprises a guiding step in which an incentive element indicates to the driver 50 how to position himself in the installation position.
  • the incentive element describes to the driver 50 the position he must take so as to be in the installation position.
  • the incentive element explains to the driver 50 that he must be seated comfortably on the seat 21 of the driver 50 and position his hands 54 on the periphery of the steering wheel 3.
  • the method When the conductor 50 is in the installation position, the method performs a recording step in which the computer records the installation position of the conductor 50.
  • the recording step makes an image of the installation position of the driver.
  • driver 50 by means of a camera positioned laterally with respect to the driver 50.
  • the camera can be positioned on the chassis 14 of the vehicle 2 as illustrated by points A in FIG. 3, or on a windshield pillar as illustrated by points B in figure 3, or on a vehicle door as illustrated by point C in figure 3.
  • the image produced during the recording step represents the conductor 50 in a side view.
  • a side view of the driver 50 is shown in Figures 1 to 3. This is a view in which the driver 50 is seen in profile so that when the driver 50 positions his hands 54 on the steering wheel 3, his arms 53, 52 extend in a plane perpendicular to a plane in which his torso extends. It is then easy to determine the angle of the arm Q formed between the arm 52 and the forearm 53.
  • the method then performs a determination step in which the computer 20 determines an installation value of the arm angle Q formed between the arm 52 and the forearm 53 of the conductor 20 in the installation position.
  • the determination step is carried out on the basis of the image of the conductor 20 produced during the recording step by means of image processing software.
  • the method then performs a modification step in which the computer 20 actuates at least one actuator so as to modify the position of the steering wheel 3 in depth and in height so that the arm angle Q is within the predetermined range.
  • the modification step therefore makes it possible to modify the position of the steering wheel 3 so that the driver 20 is in a comfort position, that is to say a position in which the arm angle Q is included. within the predetermined range.
  • the modification step modifies the in-depth height adjustment of the steering wheel 3 with a speed of less than 30 mm / s. so as not to surprise the driver.
  • the method according to the invention then performs a validation step in which the driver 50 validates the modification step. In other words, the driver 5 confirms that the comfort position reached during the modification step suits him.
  • a comfort position setting does not allow the steering wheel 3 to descend along the vertical axis Z, that is to say to move towards the bottom of the vehicle 2. In this way, it is impossible for the steering wheel 3 to hit the knees of the driver 50 during the modification step.
  • the method finally comprises a detection step in which the computer 20 detects a force opposing the modification of the position of the steering wheel 3.
  • the force is applied by the driver 50 who does not wish a modification of his position or by a barrier.
  • the detection step then stops the modification of the position of the steering wheel 3.
  • the detection step therefore makes it possible to prevent the modification step from being carried out. In this way, there is no risk of injuring the driver during the modification step.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)

Abstract

Method for adjusting a position of a steering wheel (3) of a steering system (1) of a vehicle (2), the steering system (1) comprising at least a computer (20), a steering column (4) to which the steering wheel (3) is attached, and at least one actuator designed to modify the position of the steering wheel (3) with respect to a chassis (14) of the vehicle (2), characterized in that the adjustment method comprises: - a registration step in which the computer (20) registers an installation position in which a driver (50) is installed; - a determination step in which the computer (20) determines an installation value for an angle (θ) formed between the arm (52) and the forearm (53) of the driver (50) in the installation position; - a modification step in which the computer (20) actuates at least one actuator so as to modify the position of the steering wheel (3) so that the angle (θ) formed between the arm (52) and the forearm (53) is comprised within a predetermined range.

Description

DESCRIPTION DESCRIPTION
TITRE : Procédé de réglage d'une position d'un volant de direction dans un système de direction en fonction d'un angle formé entre le bras et l'avant-bras du conducteurTITLE: Method of adjusting a position of a steering wheel in a steering system as a function of an angle formed between the arm and forearm of the driver
L'invention concerne le domaine des systèmes de direction d'un véhicule et plus particulièrement un procédé de réglage d'une position d'un volant de direction. The invention relates to the field of vehicle steering systems and more particularly to a method for adjusting a position of a steering wheel.
Un système de direction d'un véhicule a pour objet de permettre à un conducteur de contrôler une trajectoire du véhicule en exerçant un effort sur un volant de direction. Généralement, un système de direction comprend plusieurs éléments dont ledit volant de direction relié à une colonne de direction, une crémaillère, et deux roues chacune reliée à une biellette. La crémaillère est la pièce permettant de relier le volant, via la colonne de direction, aux roues, via les biellettes ; c'est-à-dire que la crémaillère transforme les efforts exercés par le conducteur sur le volant en une rotation des roues du véhicule. The object of a steering system of a vehicle is to allow a driver to control a trajectory of the vehicle by exerting a force on a steering wheel. Generally, a steering system comprises several elements including said steering wheel connected to a steering column, a rack, and two wheels each connected to a link. The rack is the part making it possible to connect the steering wheel, via the steering column, to the wheels, via the connecting rods; that is to say that the rack transforms the forces exerted by the driver on the steering wheel into a rotation of the wheels of the vehicle.
Certaines colonnes de direction permettent de modifier une position du volant de direction par rapport à un châssis du véhicule. Plus précisément, la colonne de direction permet d'une part, un réglage en profondeur du volant de direction, c'est-à-dire suivant un axe d'élongation de la colonne de direction, et d'autre part un réglage en hauteur, c'est-à-dire autour d'un axe de rotation qui s'étend transversalement à l'axe d'élongation de la colonne de direction. Certain steering columns make it possible to modify a position of the steering wheel relative to a chassis of the vehicle. More precisely, the steering column allows, on the one hand, a depth adjustment of the steering wheel, that is to say along an axis of elongation of the steering column, and on the other hand a height adjustment. , that is to say around an axis of rotation which extends transversely to the axis of elongation of the steering column.
Les réglages en profondeur et en hauteur peuvent être réalisés par des actionneurs électriques pilotés par un calculateur. The depth and height adjustments can be made by electric actuators controlled by a computer.
La modification de la position du volant de direction permet à un conducteur, assis sur un siège conducteur, de positionner le volant de direction dans une position de confort. La position de confort du volant de direction dépend d'une situation de conduite du véhicule, c'est-à-dire d'un type de trajet réalisé par le véhicule. Par exemple, lors d'un long trajet en ligne droite, il est plus confortable pour le conducteur d'avoir les bras allongés et donc que le volant de direction soit éloigné du buste. Plus précisément, lors d'un long trajet en ligne droite, la position de confort est celle dans laquelle un angle entre le bras et l'avant-bras du conducteur est compris entre 110° et 140°, idéalement 120°. A l'inverse, sur une route de montagne ou en ville lorsque le conducteur doit faire de nombreuses manœuvres avec le volant de direction, il est plus agréable pour le conducteur d'avoir le volant de direction proche du buste de sorte que l'angle formé entre le bras et l'avant-bras soit moins important que lors d'un trajet en ligne droite. De cette manière, les manœuvres avec le volant de direction sont facilitées. Plus précisément, lors de manœuvres, la position de confort est celle dans laquelle l'angle entre le bras et l'avant-bras du conducteur est compris entre 80° et 100°, idéalement 90°. Changing the position of the steering wheel allows a driver, seated in a driver's seat, to position the steering wheel in a position of comfort. The comfort position of the steering wheel depends on a driving situation of the vehicle, that is to say on a type of journey made by the vehicle. For example, during a long straight line trip, it is more comfortable for the driver to have the arms extended and therefore for the steering wheel to be away from the chest. More precisely, during a long straight line trip, the comfort position is one in which an angle between the driver's arm and forearm is between 110 ° and 140 °, ideally 120 °. Conversely, on a mountain road or in town when the driver has to make many maneuvers with the steering wheel, it is more pleasant for the driver to have the steering wheel close to the torso so that the angle formed between the arm and forearm is less important than when traveling in a straight line. In this way, maneuvering with the steering wheel is facilitated. More precisely, during maneuvers, the comfort position is that in which the angle between the driver's arm and forearm is between 80 ° and 100 °, ideally 90 °.
Ainsi, il est inconfortable et dangereux que le conducteur ne soit pas dans la position de confort. Plus précisément, un inconfort apparaît lorsque le conducteur doit approcher le buste du volant de direction. A l'inverse, lorsque le volant de direction est trop éloigné du conducteur, celui-ci ne pourra pas le manipuler efficacement de manière à réaliser des manœuvres en toute sécurité. Thus, it is uncomfortable and dangerous that the driver is not in the comfort position. More precisely, discomfort appears when the driver has to bring his chest up to the steering wheel. Conversely, when the steering wheel is too far from the driver, the latter will not be able to handle it effectively so as to perform maneuvers in complete safety.
Or, beaucoup de conducteurs ignorent que la position du volant peut être modifiée.However, many drivers are unaware that the position of the steering wheel can be changed.
En outre, dans le cas des véhicules partagés, le conducteur change très régulièrement. L'invention a pour but de remédier à tout ou partie des inconvénients précités en proposant un système de direction dont la position du volant de direction s'adapte à la position du conducteur pour atteindre la position de confort. In addition, in the case of shared vehicles, the driver changes very regularly. The object of the invention is to remedy all or part of the aforementioned drawbacks by proposing a steering system in which the position of the steering wheel adapts to the position of the driver in order to reach the position of comfort.
L'invention a pour objet un procédé de réglage d'une position d'un volant de direction d'un système de direction d'un véhicule, le système de direction comprenant au moins un calculateur, une colonne de direction sur laquelle est fixé le volant de direction, et au moins un actionneur conçu pour modifier la position du volant de direction par rapport à un châssis du véhicule, caractérisé en ce que le procédé de réglage comprend :The subject of the invention is a method for adjusting a position of a steering wheel of a steering system of a vehicle, the steering system comprising at least one computer, a steering column on which the steering column is fixed. steering wheel, and at least one actuator adapted to modify the position of the steering wheel relative to a vehicle chassis, characterized in that the adjustment method comprises:
- une étape d'enregistrement dans laquelle le calculateur enregistre une position d'installation d'un conducteur ; a recording step in which the computer records an installation position of a driver;
- une étape de détermination dans laquelle le calculateur détermine une valeur d'installation d'un angle formé entre le bras et l'avant-bras du conducteur dans la position d'installation ; a determination step in which the computer determines an installation value of an angle formed between the arm and the forearm of the driver in the installation position;
- une étape de modification dans laquelle le calculateur actionne au moins un actionneur de manière à modifier la position du volant de direction afin que l'angle formé entre le bras et l'avant-bras soit compris dans une plage prédéterminée. a modification step in which the computer actuates at least one actuator so as to modify the position of the steering wheel so that the angle formed between the arm and the forearm is within a predetermined range.
La position d'installation du conducteur est la position du conducteur lorsque ce dernier est assis sur un siège conducteur positionné en regard du volant de direction, et qu'il positionne ses mains sur le volant de direction. Préférentiellement, la position d'installation est enregistrée lorsque le conducteur positionne ses mains sur une périphérie du volant de direction. La position d'installation est donc une position déterminée en fonction du conducteur, par exemple en fonction d'une corpulence, d'une longueur des bras et des jambes du conducteur. La position d'installation n'est pas associée à une situation de conduite. Préférentiellement, la position d'installation est enregistrée lorsque le véhicule est immobile. The driver's installation position is the position of the driver when the latter is seated on a driver's seat positioned opposite the steering wheel, and he positions his hands on the steering wheel. Preferably, the installation position is recorded when the driver positions his hands on a periphery of the steering wheel. The installation position is therefore a position determined as a function of the driver, for example as a function of a build, of a length of the arms and of the legs of the driver. The installation position is not associated with a driving situation. Preferably, the installation position is recorded when the vehicle is stationary.
A partir de la position d'installation, le calculateur détermine l'angle formé entre le bras et l'avant-bras du conducteur puis réalise l'étape de modification de sorte à modifier la position du volant de direction afin que ledit angle soit compris dans la plage prédéterminée. From the installation position, the computer determines the angle formed between the driver's arm and forearm then performs the modification step so as to modify the position of the steering wheel so that said angle is within the predetermined range.
L'étape de modification permet donc de modifier la position du volant de direction de manière à ce que le conducteur soit dans une position de confort, c'est-à-dire une position dans laquelle l'angle formé entre le bras et l'avant-bras est compris dans la plage prédéterminée. The modification step therefore makes it possible to modify the position of the steering wheel so that the driver is in a position of comfort, that is to say a position in which the angle formed between the arm and the forearm is within the predetermined range.
Selon une caractéristique de l'invention, le procédé comprend une étape de guidage dans laquelle un élément d'incitation indique au conducteur comment se positionner dans la position d'installation. According to one characteristic of the invention, the method comprises a guiding step in which an incentive element indicates to the driver how to position himself in the installation position.
L'élément d'incitation décrit au conducteur la position qu'il doit prendre de manière à être dans la position d'installation. Autrement dit, l'élément d'incitation explique au conducteur qu'il doit être assis sur le siège conducteur et positionner ses mains sur le volant de direction, et plus précisément sur la périphérie du volant de direction. L'élément d'incitation peut être un élément d'affichage, une assistance vocale, un film ou tout autre moyen permettant de transmettre une information au conducteur.The incentive element describes to the driver the position he must take so as to be in the installation position. In other words, the incentive element explains to the driver that he must be seated in the driver's seat and position his hands on the steering wheel, and more precisely on the periphery of the steering wheel. The incentive element may be a display element, voice assistance, a film or any other means making it possible to transmit information to the driver.
Selon une caractéristique de l'invention, l'étape d'enregistrement réalise une image de la position d'installation du conducteur. According to one characteristic of the invention, the recording step produces an image of the installation position of the driver.
Ainsi l'étape de détermination est réalisée sur la base d'une image du conducteur. Un logiciel de traitement d'image peut donc réaliser l'étape de détermination. Thus the determination step is carried out on the basis of an image of the driver. Image processing software can therefore perform the determination step.
Selon une caractéristique de l'invention l'image est réalisée par au moins un appareil de prise de vue ou une caméra. According to one characteristic of the invention, the image is produced by at least one camera or one camera.
Selon une caractéristique de l'invention, l'image de la position d'installation représente le conducteur suivant une vue latérale. According to one characteristic of the invention, the image of the installation position represents the driver in a side view.
Une vue latérale du conducteur est une vue dans laquelle le conducteur est vu de profil de sorte que, lorsque le conducteur positionne ses mains sur le volant de direction, ses bras s'étendent dans un plan perpendiculaire à un plan dans lequel s'étend son torse. Il est alors facile de déterminer l'angle formé entre le bras et l'avant-bras. A driver's side view is a view in which the driver is seen from the side so that when the driver positions his hands on the steering wheel, his arms extend in a plane perpendicular to a plane in which his body extends. torso. It is then easy to determine the angle formed between the arm and the forearm.
Selon une caractéristique de l'invention, l'appareil de prise de vue ou la caméra est positionné sur un châssis du véhicule, ou sur un plafond du véhicule, ou sur un montant du pare-brise, ou sur une portière du véhicule. According to one characteristic of the invention, the shooting device or the camera is positioned on a chassis of the vehicle, or on a ceiling of the vehicle, or on an upright of the windshield, or on a door of the vehicle.
Selon une caractéristique de l'invention, l'étape de modification modifie un réglage en profondeur du volant de direction. According to one characteristic of the invention, the modification step modifies an in-depth adjustment of the steering wheel.
Ainsi, le volant de direction est éloigné ou rapproché du conducteur. Thus, the steering wheel is away or closer to the driver.
Selon une caractéristique de l'invention, l'étape de modification modifie un réglage en hauteur du volant de direction. According to one characteristic of the invention, the modification step modifies a height adjustment of the steering wheel.
Ainsi, le volant de direction s'approche ou s'éloigne des genoux du conducteur. Préférentiellement, l'étape de modification modifie un réglage en profondeur et en hauteur du volant de direction. Thus, the steering wheel approaches or moves away from the driver's knees. Preferably, the modification step modifies a depth and height adjustment of the steering wheel.
Ainsi il est possible d'adapter au mieux la position du volant au conducteur. Thus it is possible to best adapt the position of the steering wheel to the driver.
Selon une caractéristique de l'invention, le procédé comprend une étape de définition dans laquelle la plage prédéterminée est choisie par le conducteur ou par le calculateur. Le procédé peut modifier la plage prédéterminée de sorte à adapter au mieux la position de confort au conducteur et au trajet prévu. En effet, la plage prédéterminée peut varier en fonction du trajet que le conducteur a prévu de réaliser ou en fonction de l'humeur du conducteur qui peut souhaiter que le volant de direction soit plus proche ou plus éloigné de lui. According to one characteristic of the invention, the method comprises a definition step in which the predetermined range is chosen by the driver or by the computer. The method can modify the predetermined range so as to best adapt the comfort position to the driver and to the intended route. Indeed, the predetermined range may vary depending on the route that the driver has planned to achieve or depending on the mood of the driver who may want the steering wheel to be closer or further away from him.
La modification peut être réalisée par le calculateur en fonction de données GPS par exemple, ou directement par le conducteur. Dans ce dernier cas, le conducteur déterminera un réglage de la position de confort qui sera associé à une plage prédéterminée. Par exemple, la plage prédéterminée d'un réglage « sport » sera comprise entre 70° et 90°, celle d'un réglage « pilotage » sera comprise entre 95° et 105° et celle d'un réglage « confort » sera comprise entre 110° et 150°. The modification can be carried out by the computer as a function of GPS data for example, or directly by the driver. In the latter case, the driver will determine an adjustment of the comfort position which will be associated with a predetermined range. For example, the predetermined range of a "sport" setting will be between 70 ° and 90 °, that of a "piloting" setting will be between 95 ° and 105 ° and that of a "comfort" setting will be between 110 ° and 150 °.
Ainsi, l'étape de définition permet une adaptation de la plage prédéterminée tout en assurant que le volant de direction soit dans une position de confort. Thus, the definition step allows adaptation of the predetermined range while ensuring that the steering wheel is in a position of comfort.
Selon une caractéristique de l'invention, le procédé comprend une étape de validation dans laquelle le conducteur valide l'étape de modification. According to one characteristic of the invention, the method comprises a validation step in which the driver validates the modification step.
L'étape de validation est réalisée après l'étape de modification. Il s'agit d'une étape dans laquelle le conducteur confirme que la position de confort atteinte lors de l'étape de modification lui plaît. The validation step is performed after the modification step. This is a step in which the driver confirms that he is happy with the comfort position reached during the modification step.
S'il souhaite conserver la position du volant de direction atteinte lors de l'étape de modification, il valide la position. If he wishes to keep the position of the steering wheel reached during the modification step, he validates the position.
S'il souhaite modifier la position du volant de direction atteinte lors de l'étape de modification, il ne valide pas la position et peut recommencer l'ensemble des étapes du procédé. If he wishes to modify the position of the steering wheel reached during the modification step, he does not validate the position and can start all the steps of the method again.
Selon une caractéristique de l'invention, le procédé comprend une étape de détection dans laquelle le calculateur détecte une force s'opposant à la modification de la position du volant de direction et arrête la modification de la position du volant de direction. Ainsi, si le conducteur ne souhaite pas une modification de la position du volant de direction, il va retenir, ou au contraire pousser le volant de direction de manière à contrer la modification en cours. En outre, la force s'opposant à la modification de la position peut être liée à un contact avec un objet ou avec le conducteur. L'étape de détection permet donc d'empêcher la réalisation de l'étape de modification. De cette manière, il n'y a aucun risque de blesser le conducteur lors de l'étape de modification. According to one characteristic of the invention, the method comprises a detection step in which the computer detects a force opposing the modification of the position of the steering wheel and stops the modification of the position of the steering wheel. Thus, if the driver does not wish a modification of the position of the steering wheel, he will hold back, or on the contrary push the steering wheel so as to counter the modification in progress. Further, the force opposing the change in position may be related to contact with an object or with the driver. The detection step therefore makes it possible to prevent the modification step from being carried out. In this way, there is no risk of injuring the driver during the modification step.
Selon une caractéristique de l'invention, la modification de la position du volant de direction est réalisée avec une vitesse inférieure à 30 mm/s. According to one characteristic of the invention, the modification of the position of the steering wheel is carried out with a speed of less than 30 mm / s.
Ainsi la modification du volant de direction est suffisamment lente pour ne pas surprendre le conducteur. Thus, the modification of the steering wheel is slow enough not to surprise the driver.
Selon une caractéristique de l'invention, la modification de la position du volant de direction est réalisée avec une vitesse comprise entre 5 et 15 mm/s. According to one characteristic of the invention, the modification of the position of the steering wheel is carried out with a speed of between 5 and 15 mm / s.
Selon une caractéristique de l'invention, la modification de la position du volant de direction est réalisée à une pluralité de vitesses différentes. According to one characteristic of the invention, the modification of the position of the steering wheel is carried out at a plurality of different speeds.
L'invention porte également sur un système de direction d'un véhicule comprenant au moins un calculateur permettant de mettre en œuvre un procédé de réglage selon l'invention. The invention also relates to a steering system of a vehicle comprising at least one computer making it possible to implement an adjustment method according to the invention.
L'invention sera mieux comprise, grâce à la description ci-après, qui se rapporte à un mode de réalisation selon la présente invention, donné à titre d'exemple non limitatif et expliqué avec référence aux dessins schématiques annexés, dans lesquels : The invention will be better understood, thanks to the description below, which relates to an embodiment according to the present invention, given by way of non-limiting example and explained with reference to the appended schematic drawings, in which:
[Fig. 1] est une représentation schématique d'un conducteur d'un véhicule dans une position de confort; [Fig. 1] is a schematic representation of a driver of a vehicle in a comfort position;
[Fig. 2] est une représentation schématique du conducteur en l'absence d'un procédé selon l'invention ; [Fig. 2] is a schematic representation of the conductor in the absence of a method according to the invention;
[Fig. 3] est un schéma représentant un véhicule muni d'un procédé selon l'invention ; [Fig. 4] est une représentation schématique d'un système de direction. [Fig. 3] is a diagram showing a vehicle fitted with a method according to the invention; [Fig. 4] is a schematic representation of a steering system.
L'invention concerne un procédé de réglage d'un volant de direction 3 d'un système de direction assistée 1 pour véhicule 2, et plus particulièrement pour véhicule 2 automobile destiné au transport de personnes et notamment pour le transport d'un conducteur 50. The invention relates to a method for adjusting a steering wheel 3 of an assisted steering system 1 for vehicle 2, and more particularly for motor vehicle 2 intended for transporting people and in particular for transporting a driver 50.
Le véhicule 2 comprend un châssis 14 sur lequel est fixé un siège 21 du conducteur 50. Le châssis 14 détermine un axe d'élongation X du véhicule 2 et un axe vertical Z, transversal à l'axe d'élongation X et qui est orienté des pieds du conducteur 50 vers la tête du conducteur 50. Le haut du châssis 14 est donc vers la tête du conducteur 50 tandis que le bas est vers les pieds du conducteur 50. The vehicle 2 comprises a frame 14 on which is fixed a seat 21 of the driver 50. The frame 14 determines an axis of elongation X of the vehicle 2 and a vertical axis Z, transverse to the axis of elongation X and which is oriented. from the feet of the driver 50 towards the head of the driver 50. The top of the frame 14 is therefore towards the head of the driver 50 while the bottom is towards the feet of the driver 50.
De façon connue en soi, et tel que cela est visible sur la figure 4, ledit système de direction assistée 1 comprend un volant de direction 3 qui permet à un conducteur 50 de manœuvrer ledit système de direction assistée 1 en exerçant un effort, dit « couple volant » T3, sur ledit volant de conduite 3. Un angle de rotation 03 du volant de direction 3, appelé par la suite l'angle volant, est mesurée au moyen d'un capteur d'angle 23. Ledit volant de direction 3 est de préférence monté sur une colonne de direction 4, guidée en rotation sur le véhicule 2, et qui engrène, au moyen d'un pignon de direction 5, sur une crémaillère de direction 6, qui est elle-même guidée en translation dans un carter de direction 7 fixé audit véhicule 2. In a manner known per se, and as can be seen in FIG. 4, said power-assisted steering system 1 comprises a steering wheel 3 which allows a driver 50 to maneuver said power-assisted steering system 1 by exerting a force, said " couple steering wheel ”T3, on said steering wheel 3. An angle of rotation 03 of the steering wheel 3, hereinafter called the steering wheel angle, is measured by means of an angle sensor 23. Said steering wheel 3 is preferably mounted on a steering column 4, guided in rotation on the vehicle 2, and which meshes, by means of a steering pinion 5, on a steering rack 6, which is itself guided in translation in a housing steering 7 attached to said vehicle 2.
De préférence, les extrémités de ladite crémaillère de direction 6 sont reliées chacune à une biellette de direction 8, 9 raccordée au porte-fusée d'une roue directrice 10, 11 (respectivement une roue gauche 10 et une roue droite 11), de telle sorte que le déplacement longitudinal en translation de la crémaillère 6 permet de modifier l'angle de braquage, c'est-à-dire l'angle de lacet, des roues directrices. Preferably, the ends of said steering rack 6 are each connected to a steering rod 8, 9 connected to the knuckle holder of a steering wheel 10, 11 (respectively a left wheel 10 and a right wheel 11), so so that the longitudinal translational movement of the rack 6 makes it possible to modify the steering angle, that is to say the yaw angle, of the steered wheels.
Le système de direction assistée 1 comprend également un moteur d'assistance 12 destiné à fournir un effort d'assistance T12, et plus particulièrement un couple d'assistance T12, pour assister la manœuvre dudit système de direction assistée 1.The assisted steering system 1 also comprises an assistance motor 12 intended to provide an assistance force T12, and more particularly an assistance torque T12, to assist the maneuver of said assisted steering system 1.
Le moteur d'assistance 12 sera de préférence un moteur électrique, à double sens de fonctionnement, et préférentiellement un moteur électrique rotatif, de type brushless. Le moteur d'assistance 12 peut venir en prise, le cas échéant par l'intermédiaire d'un réducteur de type réducteur à engrenage, soit sur la colonne de direction 4 elle-même, pour former un mécanisme dit « à simple pignon », soit directement sur la crémaillère de direction 6, au moyen par exemple d'un second pignon 13 distinct du pignon de direction 5 qui permet à la colonne de direction 4 d'engrener sur la crémaillère 6, de sorte à former un mécanisme dit « à double pignon », tel que cela est illustré sur la figure 4, ou bien encore au moyen d'une vis à billes qui coopère avec un filetage correspondant de ladite crémaillère 6, à distance dudit pignon de direction 5. The assistance motor 12 will preferably be an electric motor, with two operating directions, and preferably a rotary electric motor, of the brushless type. The assistance motor 12 can engage, where appropriate via a reduction gear type gearbox, or on the steering column 4 itself, to form a so-called “single pinion” mechanism, either directly on the steering rack 6, for example by means of a second pinion 13 separate from the steering pinion 5 which allows the steering column 4 to mesh with the rack 6, so as to form a so-called "toggle" mechanism. double pinion ”, as illustrated in FIG. 4, or even by means of a ball screw which cooperates with a corresponding thread of said rack 6, at a distance from said steering pinion 5.
Un angle de rotation Q12 du moteur d'assistance 12, appelé par la suite l'angle moteur, est mesuré au moyen d'un capteur d'angle 24. An angle of rotation Q12 of the assist motor 12, hereinafter called the motor angle, is measured by means of an angle sensor 24.
Le système de direction 1 comprend un calculateur 20 recevant une pluralité de paramètres du véhicule 2 et notamment des paramètres du système de direction assistée 1 comme par exemple l'angle volant Q3 ou l'angle moteur Q12. The steering system 1 comprises a computer 20 receiving a plurality of parameters from the vehicle 2 and in particular parameters from the assisted steering system 1 such as for example the steering wheel angle Q3 or the engine angle Q12.
Une position du volant de direction 3 par rapport au châssis 14 du véhicule 2 est modifiable au moyens de deux actionneurs. Un premier actionneur est appelé l'actionneur télescopique. Il permet de modifier la position du volant de direction 3 suivant un axe d'élongation X4 de la colonne de direction 4. On appellera cette modification un réglage en profondeur. Un deuxième actionneur est appelé l'actionneur « tilt ». Il permet modifier la position du volant de direction 3 autour d'un axe de rotation Y4 qui s'étend transversalement à l'axe d'élongation X4 de la colonne de direction 4. On appellera cette modification un réglage en hauteur. A position of the steering wheel 3 relative to the chassis 14 of the vehicle 2 can be modified by means of two actuators. A first actuator is called the telescopic actuator. It makes it possible to modify the position of the steering wheel 3 along an axis of elongation X4 of the steering column 4. This modification will be called a depth adjustment. A second actuator is called the “tilt” actuator. It allows to modify the position of the steering wheel 3 around a axis of rotation Y4 which extends transversely to the axis of elongation X4 of the steering column 4. This modification will be called a height adjustment.
Une modification en hauteur et en profondeur permet de faire varier la position du volant de direction 3 selon l'axe d'élongation X du véhicule 2 et selon l'axe vertical Z.A modification in height and depth makes it possible to vary the position of the steering wheel 3 along the axis of elongation X of the vehicle 2 and along the vertical axis Z.
La figure 1 illustre le conducteur 50 dans une position de confort. Dans cette position, le conducteur est assis sur le siège 21 et a le dos 51 appuyé contre le siège 21. Un angle de bras Q formé entre le bras 52 et l'avant-bras 53 du conducteur est compris entre 90° et 120°. Figure 1 illustrates the driver 50 in a comfort position. In this position, the driver is seated on the seat 21 and has his back 51 pressed against the seat 21. An arm angle Q formed between the arm 52 and the forearm 53 of the driver is between 90 ° and 120 ° .
La figure 2 illustre le conducteur 50 en l'absence du procédé selon l'invention. Dans cette situation, le conducteur 50 est trop éloigné du volant de direction 3. Ainsi, le conducteur 50 approche le buste du volant de direction 3 afin que l'angle de bras Q soit compris entre 90° et 120°. De cette manière, le conducteur décolle le dos 51 du siège 21. Il n'est pas dans une position de confort. FIG. 2 illustrates the conductor 50 in the absence of the method according to the invention. In this situation, the driver 50 is too far from the steering wheel 3. Thus, the driver 50 brings the bust of the steering wheel 3 so that the arm angle Q is between 90 ° and 120 °. In this way, the driver takes off the back 51 of the seat 21. He is not in a position of comfort.
Le procédé selon l'invention permet un réglage automatique en hauteur et en profondeur du volant de manière à ce que le conducteur 50 soit dans une position de confort. The method according to the invention allows automatic height and depth adjustment of the steering wheel so that the driver 50 is in a position of comfort.
Plus précisément, le procédé de réglage selon l'invention réalisé par la calculateur 20 comprend une étape de définition dans laquelle une plage prédéterminée est choisie par le conducteur. More precisely, the adjustment method according to the invention carried out by the computer 20 comprises a definition step in which a predetermined range is chosen by the driver.
La plage prédéterminée correspond à la plage de l'angle de bras Q qui sera utilisée par le procédé selon l'invention. La plage prédéterminée correspond à l'angle de bras Q pour lequel le conducteur 50 est dans une position de confort. La plage prédéterminée peut être choisie par le conducteur 50 de sorte à adapter au mieux la position de confort au conducteur 50 et au trajet prévu. En effet, la plage prédéterminée peut varier en fonction du trajet que le conducteur 50 a prévu de réaliser ou en fonction de l'humeur du conducteur 50 qui peut souhaiter que le volant de direction 3 soit plus proche ou plus éloigné de lui. The predetermined range corresponds to the range of the arm angle Q which will be used by the method according to the invention. The predetermined range corresponds to the arm angle Q for which the driver 50 is in a comfort position. The predetermined range can be chosen by the driver 50 so as to best adapt the comfort position to the driver 50 and to the planned route. Indeed, the predetermined range may vary depending on the route that the driver 50 has planned to achieve or depending on the mood of the driver 50 who may want the steering wheel 3 to be closer or further away from him.
Dans le cas présent, la modification est réalisée par le conducteur 50 en sélectionnant un réglage via le calculateur 20. Les réglages possibles de la position de confort sont :In the present case, the modification is carried out by the driver 50 by selecting a setting via the computer 20. The possible settings of the comfort position are:
- un réglage « sport » dans lequel l'angle de bras Q sera compris entre 70° et 90° de sorte que le conducteur 50 soit proche du volant de direction 3 afin de réaliser efficacement des manœuvres de direction ; a “sport” setting in which the arm angle Q will be between 70 ° and 90 ° so that the driver 50 is close to the steering wheel 3 in order to efficiently perform steering maneuvers;
- un réglage « pilotage » dans lequel l'angle de bras Q sera compris entre 95° et 105° de sorte que le conducteur puisse réaliser facilement tant des trajets en ligne droite que des manœuvres. - un réglage « confort » dans lequel l'angle de bras Q sera compris entre 110° et 150° de sorte que le conducteur a les bras allongés de manière à réaliser de manière confortable de longs trajets en ligne droite. - a "piloting" setting in which the arm angle Q will be between 95 ° and 105 ° so that the driver can easily perform both straight journeys and maneuvers. a “comfort” setting in which the arm angle Q will be between 110 ° and 150 ° so that the driver has his arms extended so as to comfortably carry out long journeys in a straight line.
Ainsi, l'étape de définition permet une adaptation de la plage prédéterminée tout en assurant que le conducteur 50 soit dans une position de confort. Thus, the definition step allows adaptation of the predetermined range while ensuring that the driver 50 is in a position of comfort.
Le procédé comprend ensuite une étape de guidage dans laquelle un élément d'incitation indique au conducteur 50 comment se positionner dans la position d'installation. The method then comprises a guiding step in which an incentive element indicates to the driver 50 how to position himself in the installation position.
L'élément d'incitation décrit au conducteur 50 la position qu'il doit prendre de manière à être dans la position d'installation. Autrement dit, l'élément d'incitation explique au conducteur 50 qu'il doit être assis confortablement sur le siège 21 du conducteur 50 et positionner ses mains 54 sur la périphérie du volant de direction 3. The incentive element describes to the driver 50 the position he must take so as to be in the installation position. In other words, the incentive element explains to the driver 50 that he must be seated comfortably on the seat 21 of the driver 50 and position his hands 54 on the periphery of the steering wheel 3.
Lorsque le conducteur 50 est dans la position d'installation, le procédé réalise une étape d'enregistrement dans laquelle le calculateur enregistre la position d'installation du conducteur 50. L'étape d'enregistrement réalise une image de la position d'installation du conducteur 50 au moyen d'un appareil de prise de vue positionné latéralement par rapport au conducteur 50. L'appareil de prise de vue peut être positionné sur le châssis 14 du véhicule 2 comme illustré par les points A en figure 3, ou sur un montant du pare- brise comme illustré par les points B en figure 3, ou sur une portière du véhicule comme illustré par le point C en figure 3. When the conductor 50 is in the installation position, the method performs a recording step in which the computer records the installation position of the conductor 50. The recording step makes an image of the installation position of the driver. driver 50 by means of a camera positioned laterally with respect to the driver 50. The camera can be positioned on the chassis 14 of the vehicle 2 as illustrated by points A in FIG. 3, or on a windshield pillar as illustrated by points B in figure 3, or on a vehicle door as illustrated by point C in figure 3.
L'image réalisée lors de l'étape de d'enregistrement représente le conducteur 50 suivant une vue latérale. The image produced during the recording step represents the conductor 50 in a side view.
Une vue latérale du conducteur 50 est illustrée en figure 1 à 3. Il s'agit d'une vue dans laquelle le conducteur 50 est vu de profil de sorte que, lorsque le conducteur 50 positionne ses mains 54 sur le volant de direction 3, ses bras 53, 52 s'étendent dans un plan perpendiculaire à un plan dans lequel s'étend son torse. Il est alors facile de déterminer l'angle de bras Q formé entre le bras 52 et l'avant-bras 53. A side view of the driver 50 is shown in Figures 1 to 3. This is a view in which the driver 50 is seen in profile so that when the driver 50 positions his hands 54 on the steering wheel 3, his arms 53, 52 extend in a plane perpendicular to a plane in which his torso extends. It is then easy to determine the angle of the arm Q formed between the arm 52 and the forearm 53.
Le procédé réalise ensuite une étape de détermination dans laquelle le calculateur 20 détermine une valeur d'installation de l'angle de bras Q formé entre le bras 52 et l'avant-bras 53 du conducteur 20 dans la position d'installation. Ainsi l'étape de détermination est réalisée sur la base de l'image du conducteur 20 réalisée lors de l'étape d'enregistrement au moyen d'un logiciel de traitement d'image. The method then performs a determination step in which the computer 20 determines an installation value of the arm angle Q formed between the arm 52 and the forearm 53 of the conductor 20 in the installation position. Thus the determination step is carried out on the basis of the image of the conductor 20 produced during the recording step by means of image processing software.
Le procédé réalise alors une étape de modification dans laquelle le calculateur 20 actionne au moins un actionneur de manière à modifier la position du volant de direction 3 en profondeur et en hauteur afin que l'angle de bras Q soit compris dans la plage prédéterminée. L'étape de modification permet donc de modifier la position du volant de direction 3 de manière à ce que le conducteur 20 soit dans une position de confort, c'est-à-dire une position dans laquelle l'angle de bras Q est compris dans la plage prédéterminée. L'étape de modification modifie le réglage en hauteur en en profondeur du volant de direction 3 avec une vitesse inférieure à 30 mm/s. afin ne pas surprendre le conducteur. Le procédé selon l'invention effectue alors une étape de validation dans laquelle le conducteur 50 valide l'étape de modification. Autrement dit, le conducteur 5 confirme que la position de confort atteinte lors de l'étape de modification lui convient. The method then performs a modification step in which the computer 20 actuates at least one actuator so as to modify the position of the steering wheel 3 in depth and in height so that the arm angle Q is within the predetermined range. The modification step therefore makes it possible to modify the position of the steering wheel 3 so that the driver 20 is in a comfort position, that is to say a position in which the arm angle Q is included. within the predetermined range. The modification step modifies the in-depth height adjustment of the steering wheel 3 with a speed of less than 30 mm / s. so as not to surprise the driver. The method according to the invention then performs a validation step in which the driver 50 validates the modification step. In other words, the driver 5 confirms that the comfort position reached during the modification step suits him.
S'il souhaite conserver la position du volant de direction 3 atteinte lors de l'étape de modification, il valide la position. If he wishes to keep the position of the steering wheel 3 reached during the modification step, he validates the position.
S'il souhaite modifier la position du volant de direction 3 atteinte lors de l'étape de modification, il ne valide pas la position et peut recommencer l'ensemble des étapes du procédé. If he wishes to modify the position of the steering wheel 3 reached during the modification step, he does not validate the position and can start all the steps of the method again.
De manière générale, un paramétrage de position de confort ne permet pas au volant de direction 3 de descendre suivant l'axe vertical Z, c'est-à-dire de se diriger vers le bas du véhicule 2. De cette manière, il est impossible que le volant de direction 3 cogne les genoux du conducteur 50 lors de l'étape de modification. In general, a comfort position setting does not allow the steering wheel 3 to descend along the vertical axis Z, that is to say to move towards the bottom of the vehicle 2. In this way, it is impossible for the steering wheel 3 to hit the knees of the driver 50 during the modification step.
Le procédé comprend enfin une étape de détection dans laquelle le calculateur 20 détecte une force s'opposant à la modification de la position du volant de direction 3. La force est appliquée par le conducteur 50 qui ne souhaite pas une modification de sa position ou par un obstacle. L'étape de détection arrête alors la modification de la position du volant de direction 3. L'étape de détection permet donc d'empêcher la réalisation de l'étape de modification. De cette manière, il n'y a aucun risque de blesser le conducteur lors de l'étape de modification. The method finally comprises a detection step in which the computer 20 detects a force opposing the modification of the position of the steering wheel 3. The force is applied by the driver 50 who does not wish a modification of his position or by a barrier. The detection step then stops the modification of the position of the steering wheel 3. The detection step therefore makes it possible to prevent the modification step from being carried out. In this way, there is no risk of injuring the driver during the modification step.
Bien entendu, l'invention n'est pas limitée aux modes de réalisation décrits et représentés aux figures annexées. Des modifications restent possibles, notamment du point de vue de la constitution des divers éléments ou par substitution d'équivalents techniques, sans sortir pour autant du domaine de protection de l'invention. Of course, the invention is not limited to the embodiments described and shown in the appended figures. Modifications remain possible, in particular from the point of view of the constitution of the various elements or by substitution of technical equivalents, without thereby departing from the scope of protection of the invention.

Claims

REVENDICATIONS
1. Procédé de réglage d'une position d'un volant de direction (3) d'un système de direction (1) d'un véhicule (2), le système de direction (1) comprenant au moins un calculateur (20), une colonne de direction (4) sur laquelle est fixé le volant de direction (3), et au moins un actionneur conçu pour modifier la position du volant de direction (3) par rapport à un châssis (14) du véhicule (2), caractérisé en ce que le procédé de réglage comprend :1. Method for adjusting a position of a steering wheel (3) of a steering system (1) of a vehicle (2), the steering system (1) comprising at least one computer (20) , a steering column (4) on which is fixed the steering wheel (3), and at least one actuator designed to modify the position of the steering wheel (3) relative to a frame (14) of the vehicle (2) , characterized in that the adjustment method comprises:
- une étape d'enregistrement dans laquelle le calculateur (20) enregistre une position d'installation d'un conducteur (50) ;- a recording step in which the computer (20) records an installation position of a driver (50);
- une étape de détermination dans laquelle le calculateur (20) détermine une valeur d'installation d'un angle (Q) formé entre le bras (52) et l'avant-bras (53) du conducteur (50) dans la position d'installation ;- a determination step in which the computer (20) determines an installation value of an angle (Q) formed between the arm (52) and the forearm (53) of the driver (50) in the position d 'installation;
- une étape de modification dans laquelle le calculateur (20) actionne au moins un actionneur de manière à modifier la position du volant de direction (3) afin que l'angle (Q) formé entre le bras (52) et l'avant-bras (53) soit compris dans une plage prédéterminée. - a modification step in which the computer (20) actuates at least one actuator so as to modify the position of the steering wheel (3) so that the angle (Q) formed between the arm (52) and the front- arm (53) is within a predetermined range.
2. Procédé de réglage selon la revendication 1, dans lequel l'étape d'enregistrement réalise une image de la position d'installation du conducteur (50). The adjustment method according to claim 1, wherein the recording step makes an image of the installation position of the conductor (50).
3. Procédé de réglage selon l'une quelconque des revendications précédentes, dans lequel l'image de la position d'installation représente le conducteur (50) suivant une vue latérale. 3. Adjustment method according to any one of the preceding claims, in which the image of the installation position represents the conductor (50) in a side view.
4. Procédé de réglage selon l'une quelconque des revendications précédentes, dans lequel l'étape de modification modifie un réglage en profondeur du volant de direction (3). 4. Adjustment method according to any one of the preceding claims, in which the modifying step modifies a depth adjustment of the steering wheel (3).
5. Procédé de réglage selon l'une quelconque des revendications précédentes, dans lequel l'étape de modification modifie un réglage en hauteur du volant de direction (3). 5. Adjustment method according to any one of the preceding claims, wherein the modifying step modifies a height adjustment of the steering wheel (3).
6. Procédé de réglage selon l'une quelconque des revendications précédentes, comprenant une étape de définition dans laquelle la plage prédéterminée est choisie par le conducteur (50) ou par le calculateur (20). 6. Adjustment method according to any one of the preceding claims, comprising a definition step in which the predetermined range is chosen by the driver (50) or by the computer (20).
7. Procédé de réglage selon l'une quelconque des revendications précédentes, comprenant une étape de validation dans laquelle le conducteur (50) valide l'étape de modification. 7. Adjustment method according to any one of the preceding claims, comprising a validation step in which the driver (50) validates the modification step.
8. Procédé de réglage selon l'une quelconque des revendications précédentes, comprenant une étape de détection dans laquelle le calculateur (20) détecte une force s'opposant à la modification de la position du volant de direction (3) et arrête la modification de la position du volant de direction (3). 8. Adjustment method according to any one of the preceding claims, comprising a detection step in which the computer (20) detects a force. opposing the modification of the position of the steering wheel (3) and stops the modification of the position of the steering wheel (3).
9. Procédé de réglage selon l'une quelconque des revendications précédentes, dans lequel la modification de la position du volant de direction (3) est réalisée avec une vitesse inférieure à 30 mm/s. 9. Adjustment method according to any one of the preceding claims, in which the modification of the position of the steering wheel (3) is carried out with a speed less than 30 mm / s.
10. Système de direction (1) d'un véhicule (2) comprenant au moins un calculateur (20) permettant de mettre en œuvre un procédé de réglage selon l'une quelconque des revendications précédentes. 10. Steering system (1) of a vehicle (2) comprising at least one computer (20) making it possible to implement an adjustment method according to any one of the preceding claims.
PCT/FR2020/051743 2019-10-04 2020-10-05 Method for adjusting a position of a steering wheel in a steering system as a function of an angle formed between the arm and the forearm of the driver WO2021064335A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1911017A FR3101598B1 (en) 2019-10-04 2019-10-04 Method of adjusting a position of a steering wheel in a steering system as a function of an angle formed between the arm and forearm of the driver
FRFR1911017 2019-10-04

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WO2021064335A1 true WO2021064335A1 (en) 2021-04-08

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FR (1) FR3101598B1 (en)
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CN112498463A (en) * 2020-12-10 2021-03-16 中国第一汽车股份有限公司 Method, device, system, apparatus and storage medium for controlling electric steering column

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US20130166154A1 (en) * 2011-12-26 2013-06-27 Denso Corporation Steering wheel position control system for a vehicle
CN106143370A (en) * 2016-08-24 2016-11-23 东风汽车公司 Seat intelligent regulating device and method
US20170313271A1 (en) * 2016-03-22 2017-11-02 Ford Global Technologies, Llc Human scanning for interior preferences setup
CN109774779A (en) * 2018-12-20 2019-05-21 东风汽车集团有限公司 A kind of steering wheel intelligent regulating device and method based on different drivers

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DE102005022488B3 (en) * 2005-05-11 2006-10-19 Zf Lenksysteme Nacam Gmbh Adjustable steering column for a vehicle comprises an axial adjusting unit with a coupling unit which slides a spindle and thus the column in relation to the vehicle
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Publication number Priority date Publication date Assignee Title
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CN112498463B (en) * 2020-12-10 2022-03-25 中国第一汽车股份有限公司 Method, device, system, apparatus and storage medium for controlling electric steering column

Also Published As

Publication number Publication date
FR3101598B1 (en) 2021-10-22
FR3101598A1 (en) 2021-04-09

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