EP3544868A1 - Verfahren und steuergerät zum erkennen von kritischen fahrsituationen eines kraftzweirads - Google Patents
Verfahren und steuergerät zum erkennen von kritischen fahrsituationen eines kraftzweiradsInfo
- Publication number
- EP3544868A1 EP3544868A1 EP17781081.9A EP17781081A EP3544868A1 EP 3544868 A1 EP3544868 A1 EP 3544868A1 EP 17781081 A EP17781081 A EP 17781081A EP 3544868 A1 EP3544868 A1 EP 3544868A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- angle
- current
- max
- slip angle
- slip
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/1701—Braking or traction control means specially adapted for particular types of vehicles
- B60T8/1706—Braking or traction control means specially adapted for particular types of vehicles for single-track vehicles, e.g. motorcycles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/1755—Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
- B60T8/17551—Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve determining control parameters related to vehicle stability used in the regulation, e.g. by calculations involving measured or detected parameters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/1755—Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
- B60T8/17552—Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve responsive to the tire sideslip angle or the vehicle body slip angle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T2201/00—Particular use of vehicle brake systems; Special systems using also the brakes; Special software modules within the brake system controller
- B60T2201/16—Curve braking control, e.g. turn control within ABS control algorithm
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T2210/00—Detection or estimation of road or environment conditions; Detection or estimation of road shapes
- B60T2210/10—Detection or estimation of road conditions
- B60T2210/12—Friction
- B60T2210/124—Roads with different friction levels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T2230/00—Monitoring, detecting special vehicle behaviour; Counteracting thereof
- B60T2230/02—Side slip angle, attitude angle, floating angle, drift angle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T2230/00—Monitoring, detecting special vehicle behaviour; Counteracting thereof
- B60T2230/03—Overturn, rollover
Definitions
- the invention relates to methods for detecting critical driving situations of a power dual-wheel. Furthermore, the invention relates to a control device which is configured to carry out such a method and one with such
- Control unit equipped power two wheel.
- Power two-wheelers sometimes also referred to as motorcycles, are motorized vehicles in which a front wheel and a rear wheel are arranged one behind the other and are therefore single-tracked.
- Such single-lane vehicles are particularly prone to accidents due to their ability to tip sideways across the direction of travel can. It is therefore desirable to recognize critical driving situations that can cause the bicycle to tip over and thus cause a dangerous accident at an early stage and, if possible, to avoid or counteract them or to mitigate their consequences.
- the detection of an instability takes place via an observation of a driver's request (target yaw rate, calculated from the steering angle) and an actual vehicle reaction (actual yaw rate). Similar strategies exist with the observation of an estimated slip angle ⁇ and a calculated wheel slip angle a. If there are clear differences between setpoint and actual values, corrective action can be taken via motor and brake interventions.
- roll angles ⁇ are typically in the range of ⁇ 50 °, while in two-lane modern vehicles in the
- a method for detecting critical driving situations of a power dual-wheeled vehicle comprises at least the following steps: first becomes a current one
- Slip angle cii and a current differentiated slip angle dcii of the front wheel and / or a current slip angle 02 and a current differentiated slip angle dci2 of the rear wheel determined. Furthermore, a current roll angle ⁇ of the power dual-wheel is also determined.
- the determined current slip angles cii, 02 and differentiated slip angles dcii, dci2 are then compared with respectively associated predetermined values ai.max, ci2, max, dai.max, dci2, max maximum allowable slip angle and maximum allowable different slip angle.
- the current roll angle ⁇ is compared with a predetermined value ⁇ ma x of a maximum allowable roll angle. When at least one of the current slip angle cii, 02 is greater than the associated predetermined value ai, m ax, ci2, max of the maximum allowable skew angle, and at least one of the current differentiated
- Slip angle dai, da2 is greater than the associated predetermined value lCll.max j C1CI2, max of the maximum allowable differentiated slip angle and the current roll angle ⁇ is greater than the predetermined value ⁇ ma x of the maximum allowable roll angle, a so-called criticality signal is generated.
- This criticality signal may be an electronic signal and may then be transmitted, for example, to another component of the power-assisted bicycle in order to induce it to initiate suitable measures, for example to stabilize the vehicle.
- Power Zweirad which is configured to carry out a method according to an embodiment of the first aspect of the invention.
- a power bicycle having a controller according to an embodiment of the second aspect of the invention.
- Embodiments of the invention may, in particular, be a solution for detecting instabilities in power two-wheelers based on a
- Slip angle of a wheel of the power wheel can be understood as an angle between a speed vector in Radaufstands Maschinen and a section line between Radmittenebene and roadway level.
- a time-dependent skew angle change is also called
- the roll angle of a power dual-wheel is also referred to herein as a roll angle and refers to a tilting
- Vehicle longitudinal axis and the steering direction of a steered wheel, as well as vehicle speed can be measured by sensors suitable.
- Slip angle, as well as the current roll angle to determine and compare these variables with certain predefined limits or maximum allowable values. At least if all three determined values are at the same time greater than the respective limit values, the present or at least immediate imminence of a critical driving situation,
- Stabilization of the power two-wheeler are triggered. It is conceivable, e.g. an intervention in known slip-based ASR (Anti-Slip Regulation) and ABS (Anti-lock Braking System) regulations, a generation of additional, stabilizing
- Additional forces may be generated, for example, by use of aerodynamic spoilers or flaps, pyrotechnic recoil forces, ejection of fluids stored in pressure tanks, or by use of gyros.
- functions that warn, for example, other vehicles on slippery roads (so-called Bike-to-X information) or in the event of an accident trigger an airbag and / or call for help (eCall).
- the current slip angle cii, 02 and the current differentiated slip angle dcii, dci2 can be determined for both the front wheel and the rear wheel.
- Increased value ai, ma x, incr of a maximum allowable slip angle of the front wheel increases as long as the determined current slip angle 02 of the rear wheel is less than a reduced predetermined value a2, max, decr of the maximum allowable slip angle of the rear wheel.
- 02 can remain in the stable range in many situations, ie below a2, max, decr.
- the increased value cii.max, incr serves as a threshold. If at high tilt then the rear axle becomes unstable, it is preferable to immediately, i. without filter times, the threshold set to low.
- Power bicycle usually behaves differently when the road surface is over
- Front wheel such a range or occurs in these first and only then follows the rear wheel.
- Front wheel does not necessarily lead to a fall, because the front wheel, if it quickly reaches a grippy road surface, often can stabilize by itself again.
- the limit ai, ma x of the maximum permissible slip angle of the front wheel can be at least temporarily increased to an increased value ai, ma x, incr, as long as the rear wheel has a low slip angle, especially as long as the slip angle of the rear wheel is less than reduced predetermined value a2, max, decr of the maximum allowable slip angle remains.
- ai, ma x, incr can, for example, order
- a2, max, decr may be at least 0.1-1.5% less than a2, max.
- According to one embodiment is further determined in the method, whether a brake of the motor two-wheeler is actuated, and upon detection of an actuation of the brake the predetermined value ⁇ t> ma x the maximum permissible roll angle to a reduced value ⁇ t> ma x is a maximum decr of permissible roll angle is reduced.
- the reduced value ⁇ ma x, decr may be at least 30-50% less than ⁇ t> ma x and set, for example, for a limited period of time between 100ms to 1000ms or for a period of time within which the brake application is detected.
- the current slip angle cii, 02 of the front wheel and / or the rear wheel is determined based on a measurement of a current slip angle ⁇ of the power dual wheel.
- the current slip angle ⁇ of the front wheel of a power Zweirads be determined based on a measurement of a current slip angle ß of the power Zweirads and taking into account a determined current steering angle ⁇ of the power Zweirads.
- the steering angle i. the angle at which the front wheel of the power wheel is turned relative to the vehicle longitudinal axis is not generally monitored so far in power two-wheeled, unless active steering damper should be controlled controlled.
- active steering damper should be controlled controlled.
- the steering angle can be monitored, for example, with a steering angle sensor, so that from data of the steering angle sensor together with data of the float angle indicating sensor, the current slip angle of the front wheel can be accurately calculated or at least estimated.
- the power dual-wheel system presented herein may therefore preferably include a sensor, a data memory, a
- the Sensor is to determine the current slip angle cii, 02 of the front wheel and / or the rear wheel, the current differentiated
- the data memory is for storing predetermined values ai, m ax, ci2, max maximum allowable
- Corresponding values can be determined in advance, for example by means of experiments or by simulations, and can preferably be stored in the data memory even before a start of operation of the control device, if possible in non-volatile form.
- Data processing unit is for comparing the current skew angle cii, 02 with the associated predetermined value ai, ma x, ci2, max of a maximum allowable skew angle, for comparing the current differentiated skew angle dcii, dci2 with the associated predetermined value dai, ma x, dci2, max a maximum allowable differentiated slip angle and for comparing the current roll angle ⁇ with the predetermined value ⁇ max ma of a maximum allowable roll angle designed.
- the signal generating unit is for generating the criticality signal when at least one of the determined current slip angle ⁇ , 02 is greater than the associated predetermined
- the sensor system can advantageously collect data or sensor signals that allow a conclusion to a current driving situation, and these data or sensor signals can then from the data processing unit taking into account previously stored in the data memory maximum allowable limits or from these derived, temporarily modified threshold criteria determine for the presence of a critical driving situation and possibly output via the signal generating unit a corresponding criticality signal and, for example, to others
- the senor also has a
- Steering angle sensor for determining a current steering angle ⁇ of the front wheel of the power dual wheel and a float angle sensor for determining a current slip angle ß of the power dual-wheel has.
- the steering angle sensor and the float angle sensor may be configured as separate sensors or implemented as part of a common vehicle sensor system.
- the data processing unit is then configured to update the current ones
- Slip angle cii, 02 and the current differentiated slip angle dcii, dci2 derive from the slip angle detected by the float angle sensor, taking into account determined by the steering angle sensor steering angles.
- the consideration currently determined steering angle can allow a particularly accurate and reliable detection of critical driving situations.
- the power dual-wheel further comprises a so-called safety device.
- the safety device can be designed to improve the safety of the power rider or the driver by activating it.
- the safety device can be a
- Anti-skid control an anti-skid control, an additional side stabilizing force generating device, a riot point increasing device, a warning signal output device, a device for activating safety devices and / or a safety device
- the controller may in this case be configured by means of the generated
- Criticality signal to activate the safety device. In this way, when detected critical driving situation by activating the
- Safety device e.g. be actively intervened in the driving dynamics of the power to stabilize this, or it may be taken other safety-enhancing measures.
- Fig. 1 shows a power dual-wheel according to an embodiment of the present invention.
- Fig. 2 shows a schematic top view of a power dual wheel for illustrating steering and float angles.
- Fig. 3 shows a schematic front view of a power dual wheel for illustrating a roll angle.
- FIG. 1 shows a power dual-wheel 1 configured by means of a specially designed control unit 3 for carrying out the method for detecting critical driving situations proposed herein.
- the power dual-wheel 1 has a sensor 5, which may be configured in particular in the form of an initial sensor, and by means of which a data processing unit 6 of the control unit 3 is enabled, current slip angle of the
- the sensor system can be designed to measure or determine a current slip angle of the power dual wheel 1 and can thus act as a float angle sensor 21.
- the sensor 5 is shown as a separate component, but may also be integrated into the control unit 3.
- the power dual-wheel 1 has a steering angle sensor 11, by means of which a current steering angle, with which the front wheel 7 is deflected, can be determined.
- a data memory 13 is provided in the predetermined values for maximum allowable Slip angle, maximum permissible values for differentiated slip angles and maximum permissible values for the roll angle can be stored.
- a wheel speed sensor 15, 17 are provided for the front wheel 7 and the rear wheel 9 are also each a wheel speed sensor 15, 17 are provided.
- a signal generating unit 19 is provided in the control unit 3 in order to output a criticality signal upon detection of a critical driving situation.
- the criticality signal can be a
- Safety device 23 of the power wheel e.g. to stabilize the
- Radaufstandstician and a line of intersection between Radmittenebene and the road surface can be determined or estimated with knowledge of the current steering angle ⁇ and the current float angle ß.
- a method or a recognition algorithm has been developed which can reliably distinguish stable from unstable driving conditions.
- the slip angle ⁇ and the differential skew angle da at least one of the wheels and the roll angle ⁇ are continuously or periodically monitored and compared with associated maximum allowable values while exceeding the limits for all three sizes from the presence of instability and issued a criticality signal.
- instability it is further distinguished whether there is a road surface with a homogeneous coefficient of friction or whether the roadway has points with lower ⁇ -patches. This can be important because of it
- the intervention threshold ai, ma x is at least temporarily increased to a higher value ai, max, incr, as long as the rear axle has small slip angles ⁇ 2 ⁇ less than a reduced value a2, max, decr.
- the rear wheel 9 In the case of a longer low-patches with a large friction coefficient difference, the rear wheel 9 also becomes unstable. Then it may be advantageous to reduce the intervention threshold for cii.max back to normal.
- Suitable parameter selection thus prevents incorrect intervention in the case of short instabilities, but triggers a necessary intervention for longer instabilities.
- the instability detection on the front wheel 7 can thus also dependent on
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016223070.0A DE102016223070A1 (de) | 2016-11-23 | 2016-11-23 | Verfahren und Steuergerät zum Erkennen von kritischen Fahrsituationen eines Kraftzweirads |
PCT/EP2017/075287 WO2018095634A1 (de) | 2016-11-23 | 2017-10-05 | Verfahren und steuergerät zum erkennen von kritischen fahrsituationen eines kraftzweirads |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3544868A1 true EP3544868A1 (de) | 2019-10-02 |
Family
ID=60043189
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17781081.9A Withdrawn EP3544868A1 (de) | 2016-11-23 | 2017-10-05 | Verfahren und steuergerät zum erkennen von kritischen fahrsituationen eines kraftzweirads |
Country Status (5)
Country | Link |
---|---|
US (1) | US10549733B2 (de) |
EP (1) | EP3544868A1 (de) |
JP (1) | JP6770203B2 (de) |
DE (1) | DE102016223070A1 (de) |
WO (1) | WO2018095634A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016223070A1 (de) * | 2016-11-23 | 2018-05-24 | Robert Bosch Gmbh | Verfahren und Steuergerät zum Erkennen von kritischen Fahrsituationen eines Kraftzweirads |
DE102018213755A1 (de) * | 2018-08-15 | 2020-02-20 | Robert Bosch Gmbh | Verfahren zum Betreiben eines motorisierten Zweirads, insbesondere eines Motorrads, sowie Computerprogramm zur Durchführung des Verfahrens |
DE102019101392A1 (de) * | 2019-01-21 | 2020-07-23 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zur Traktionskontrolle eines einspurigen Kraftfahrzeugs unter Berücksichtigung des Schräglaufwinkels des Hinterrades |
US20200406969A1 (en) * | 2019-06-26 | 2020-12-31 | The Regents Of The University Of Michigan | Lane Change Maneuvers With Minimized Tire Slip |
DE102020101650A1 (de) | 2020-01-24 | 2021-07-29 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zum Beeinflussen einer Schräglage eines Einspurfahrzeugs |
US20230406287A1 (en) * | 2022-05-25 | 2023-12-21 | GM Global Technology Operations LLC | Data fusion-centric method and system for vehicle motion control |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2629383B2 (ja) * | 1989-11-16 | 1997-07-09 | 日産自動車株式会社 | 操舵力制御装置 |
DE102005003980B3 (de) * | 2005-01-28 | 2006-09-14 | Bayerische Motoren Werke Ag | Schlupfregelsystem für ein einspuriges Kraftfahrzeug |
DE102008001970A1 (de) | 2008-05-26 | 2009-12-03 | Robert Bosch Gmbh | Verfahren zum Stabilisieren von Fahrbewegungen eines einspurigen Kraftfahrzeugs, unter Nutzung des Neigungswinkels und des Schwimmwinkels sowie Vorrichtung dafür |
DE102009046226A1 (de) * | 2009-10-30 | 2011-05-19 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Reduktion der auf ein Motorrad wirkenden Querkräfte |
DE102010003951A1 (de) * | 2010-04-14 | 2011-10-20 | Robert Bosch Gmbh | Verfahren zum Stabilisieren eines Zweirads bei seitlich rutschendem Hinterrad |
US8919483B2 (en) * | 2012-01-03 | 2014-12-30 | Hero Motorcorp, Ltd. | Ridden vehicle with integrated fuel tank |
DE102012211963A1 (de) | 2012-07-10 | 2014-01-30 | Robert Bosch Gmbh | Verfahren zur Stabilisierung eines Zweirads bei Kurvenfahrt |
DE102013200020A1 (de) * | 2013-01-02 | 2014-07-03 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Fahrstabilisierung eines motorisierten Zweirads |
FR3032523B1 (fr) * | 2015-02-11 | 2017-03-10 | Continental Automotive France | Procede de detection d'une inclinaison par rapport au sol d'une roue |
DE102016211421A1 (de) * | 2016-06-27 | 2017-12-28 | Robert Bosch Gmbh | Verfahren zur querdynamischen Stabilisierung eines einspurigen Kraftfahrzeugs |
DE102016223070A1 (de) * | 2016-11-23 | 2018-05-24 | Robert Bosch Gmbh | Verfahren und Steuergerät zum Erkennen von kritischen Fahrsituationen eines Kraftzweirads |
-
2016
- 2016-11-23 DE DE102016223070.0A patent/DE102016223070A1/de active Pending
-
2017
- 2017-10-05 JP JP2019546976A patent/JP6770203B2/ja active Active
- 2017-10-05 US US16/348,707 patent/US10549733B2/en active Active
- 2017-10-05 WO PCT/EP2017/075287 patent/WO2018095634A1/de unknown
- 2017-10-05 EP EP17781081.9A patent/EP3544868A1/de not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
DE102016223070A1 (de) | 2018-05-24 |
JP6770203B2 (ja) | 2020-10-14 |
JP2019535594A (ja) | 2019-12-12 |
US20190283722A1 (en) | 2019-09-19 |
US10549733B2 (en) | 2020-02-04 |
WO2018095634A1 (de) | 2018-05-31 |
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