KR20160077652A - Roll angle measuring device for vehicle roll control - Google Patents
Roll angle measuring device for vehicle roll control Download PDFInfo
- Publication number
- KR20160077652A KR20160077652A KR1020140187805A KR20140187805A KR20160077652A KR 20160077652 A KR20160077652 A KR 20160077652A KR 1020140187805 A KR1020140187805 A KR 1020140187805A KR 20140187805 A KR20140187805 A KR 20140187805A KR 20160077652 A KR20160077652 A KR 20160077652A
- Authority
- KR
- South Korea
- Prior art keywords
- hall
- magnetic force
- pinion gear
- driven pinion
- vehicle
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/10—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to vehicle motion
- B60W40/112—Roll movement
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Mathematical Physics (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
Description
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an angle measuring apparatus for a roll control system, and more particularly, to an apparatus for detecting a rotation angle of a stabilizer bar of a vehicle using two hall sensors.
Generally, a stabilizer bar of a vehicle is installed to control the rolling of the vehicle body that occurs when the vehicle is turning or running on a rough road surface.
This stabilizer bar is a torsion bar that is installed between two control arms and is twisted when the vehicle turns. However, the stabilizer bar is resistant to such torsion, preventing the vehicle body from tipping when the vehicle is turning and reducing rolling.
The Active Roll Control System (ARS) has a hydraulic active roll control system with a hydraulic actuator on the stabilizer bar and an electromotive active roll control system that is less energy consuming, environmentally friendly and suitable for high voltage environments. The active roll control system uses an electronic control unit (ECU) of the vehicle and an actuator to control the twist angle of the stabilizer bar. By controlling the twist angle, it is possible to reduce the rolling angle of the vehicle when cornering, thereby enhancing the stability of the vehicle and the cornering force.
The operation principle of the conventional electromotive active roll control system will be described as follows.
When the vehicle turns, a rolling force due to the centrifugal force is generated, and the inner lower arm is heard and the outer lower arm is lowered. The active roll control system controls the torsion angle of the stabilizer bar according to the centrifugal force (lateral acceleration), thereby limiting the behavior of the lower arm and reducing the roll angle of the vehicle.
Most of the actuators of the rotary type electric active roll control system are mounted at the center of the two stabilizer. The actuator of the motorized active roll control system uses the high efficiency motor which is easy to connect with the stabilizer bar and the reducer, and reduces the capacity and size of the motor by using the reducer with high reduction ratio. The motor is composed of a rotor and a stator, the stator is fixed to the housing, and the rotor is connected to the reducer to transmit the torque directly to the stabilizer. The opposite stabilizer bar is connected to the housing and the same torque is transmitted to both ends of the stabilizer.
In the active roll control system, twist angle control of the stabilizer bar is important. For this purpose, a device capable of measuring the twist angle of the stirrer bar over the entire range of rotation angle is needed.
An embodiment of the present invention is to provide an improved angle measuring device capable of measuring a rotation angle of an entire range from 0 to 360 in an angle measuring device for detecting a rotation angle of a stirrer bar.
In order to achieve the above object, an angle measuring apparatus for a roll control system of a vehicle according to the present invention comprises: a cylindrical actuator housing; A ring-shaped driving gear connected to a stabilizer bar of the vehicle and rotatable together with the stirrer bar about a rotation axis of the stirrer bar in the actuator housing and having a gear on the outer circumferential surface; A driven pinion gear rotating in accordance with rotation of the driving gear in the actuator housing and including a magnet therein; And a position sensor module fixed to the cylindrical actuator and having a hole sensor portion for detecting a rotation angle of the driven pinion gear,
The Hall sensor unit includes: a first Hall IC arranged to face the driven pinion gear; And a second Hall IC arranged side by side with the first Hall IC facing the driven pinion gear.
In addition, the position sensor module may be in the form of a disk having a cavity through which the stirrer bar can pass.
The first Hall IC and the second Hall IC each include a first magnetic force detecting portion and a second magnetic force detecting portion for measuring a magnetic field change of the magnet, Wherein the second magnetic force detection portion of the IC is positioned deviated from the center of the first Hall IC and the center of the second Hall IC and is spaced apart from the center of the second Hall IC by a distance between the first magnetic force detection portion and the second magnetic force detection portion The one-hole IC and the second hole IC may be arranged.
The first Hall IC and the second Hall IC are the same, and the second Hall IC may be disposed on the first Hall IC side while being rotated 180 degrees with respect to the first Hall IC.
The Hall sensor unit may use the measured value of the first Hall IC as a default value and the measured value of the second Hall IC for a period in which the measured value of the first Hall IC deviates from the linearity.
The Hall sensor unit uses the measured value of the first Hall IC as a default value when the PWM duty value of the first Hall IC is more than 15% and less than 85%, and the PWM duty value of the first Hall IC is 15% or 85% or more, the measured value of the second Hall IC can be used.
The angle measuring apparatus for a roll control system of a vehicle according to an embodiment of the present invention can measure the angle of rotation of the stirrer bar from 0 ° to 360 ° over the entire range using two Hall ICs.
Further, as the reliability of the stabilizer torsional rotational angle measurement is improved, the performance of the roll control system of the vehicle can be improved.
1 is a sectional view of a roll control system provided with an angle measuring apparatus for a roll control system of a vehicle according to an embodiment of the present invention.
2 is a perspective view of an angle measuring apparatus for a roll control system of a vehicle according to an embodiment of the present invention.
3 is a plan view of a position sensor module included in an angle measuring apparatus for a roll control system of a vehicle shown in FIG.
FIG. 4 is a view for explaining the arrangement relationship of the first Hall IC and the second Hall IC provided in the position sensor module of FIG. 3. FIG.
5 is a diagram for explaining the linearity of the output of the Hall IC shown in FIG.
Fig. 6 is a diagram for explaining the use switching timing of the first Hall IC and the second Hall IC.
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly explain the present invention in the drawings, parts not related to the description are omitted.
When an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may be present in between Can be understood. On the other hand, when it is mentioned that an element is "directly connected" or "directly connected" to another element, it can be understood that no other element exists in between.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions may include plural expressions unless the context clearly dictates otherwise.
In this specification, the terms "comprise", "comprising", and the like are used interchangeably to designate the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of features, numbers, steps, operations, components, parts, or combinations thereof.
Also, unless otherwise defined, all terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs . Terms such as those defined in commonly used dictionaries can be interpreted as having a meaning consistent with the meaning in the context of the related art and, unless explicitly defined herein, are interpreted in an ideal or overly formal sense .
In addition, the following embodiments are provided so as to explain the invention more clearly to a person having ordinary skill in the art, the shape and the size of the elements in the drawings and the like can be exaggerated for clarity.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a cross-sectional view of a roll control system provided with an angle measurement device for a roll control system of a vehicle according to an embodiment of the present invention, and FIG. 2 is a schematic diagram of an angle measurement device for a roll control system of a vehicle according to an embodiment of the present invention. FIG. 3 is a plan view of a position sensor module included in an angle measuring apparatus for a roll control system of a vehicle shown in FIG.
1 to 3, an angle measuring apparatus for a roll control system of a vehicle according to an embodiment of the present invention includes an Active Stabilizer System (ARS) of a vehicle, It is designed to measure the twist angle.
The angle measuring device for the roll control system of the vehicle includes an
The
The
The driven
The
In the illustrated embodiment, the
FIG. 4 is a view for explaining the arrangement relationship of the first Hall IC and the second Hall IC provided in the position sensor module of FIG. 3. FIG.
Hereinafter, the
3 and 4, the
The
The second magnetic
In this embodiment, the
Hereinafter, operation of an angle measuring apparatus for a roll control system of a vehicle according to an embodiment of the present invention will be described.
Fig. 5 is a diagram for explaining the linearity of the output of the Hall IC shown in Fig. 4, and Fig. 6 is a diagram for explaining a use switching timing of the first Hall IC and the second Hall IC.
Referring to FIG. 5, the output characteristics of the
In order to solve this problem, in this embodiment, as shown in FIG. 4, two
6, first, the rotation angle of the
As described above, according to the angle measuring apparatus for a roll control system of a vehicle according to an embodiment of the present invention, by using two Hall ICs, it is possible to solve the problem of nonlinear sections of output values occurring when a single Hall IC is used . Therefore, the angle of rotation of the stirrer bar can be measured over the entire range from 0 ° to 360 °.
Further, as the reliability of the stabilizer torsional rotational angle measurement is improved, the performance of the roll control system of the vehicle can be improved.
It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.
The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.
10: vehicle roll control system 12: actuator housing
13: Nut 14: Driving gear
15: Reduction gear 16: Stabilizer bar
17: Pinion gear 100: Position sensor module
120: Hall sensor unit 140: Microprocessor
122: first Hall IC 123: first magnetic force detecting section
124:
Claims (6)
A ring-shaped driving gear connected to a stabilizer bar of the vehicle and rotatable together with the stirrer bar about a rotation axis of the stirrer bar in the actuator housing and having a gear on the outer circumferential surface;
A driven pinion gear rotating in accordance with rotation of the driving gear in the actuator housing and including a magnet therein; And
And a position sensor module fixed to the cylindrical actuator and having a hole sensor portion for detecting a rotation angle of the driven pinion gear,
The Hall sensor unit includes:
A first Hall IC arranged to face the driven pinion gear; And
And a second hole IC disposed side by side with the first Hall IC facing the driven pinion gear.
Wherein the position sensor module is in the shape of a disk having a hollow through which the stirrer bar can pass.
The first Hall IC and the second Hall IC each include a first magnetic force detecting portion and a second magnetic force detecting portion for measuring a magnetic field change of the magnet,
Wherein the first magnetic force detecting portion of the first Hall IC and the second magnetic force detecting portion of the second Hall IC are deflected away from the center of the first Hall IC and the center of the second Hall IC,
Wherein the first Hall IC and the second Hall IC are disposed such that a distance between the first magnetic force detection unit and the second magnetic force detection unit is minimized.
Wherein the first Hall IC and the second Hall IC are the same and the second Hall IC is disposed on a side surface of the first Hall IC while being rotated 180 degrees with respect to the first Hall IC. Angle measuring device.
The Hall sensor unit includes:
Wherein the measured value of the first Hall IC is used as a default value and the measured value of the second Hall IC is used for a period in which the measured value of the first Hall IC deviates from the linearity. Device.
The Hall sensor unit includes:
Wherein the measured value of the first Hall IC is used as a default value when the PWM duty value of the first Hall IC exceeds 15% and less than 85%, and the PWM duty value of the first Hall IC is 15% The measured value of the second Hall IC is used.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020140187805A KR20160077652A (en) | 2014-12-24 | 2014-12-24 | Roll angle measuring device for vehicle roll control |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020140187805A KR20160077652A (en) | 2014-12-24 | 2014-12-24 | Roll angle measuring device for vehicle roll control |
Publications (1)
Publication Number | Publication Date |
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KR20160077652A true KR20160077652A (en) | 2016-07-04 |
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ID=56501074
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020140187805A KR20160077652A (en) | 2014-12-24 | 2014-12-24 | Roll angle measuring device for vehicle roll control |
Country Status (1)
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KR (1) | KR20160077652A (en) |
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2014
- 2014-12-24 KR KR1020140187805A patent/KR20160077652A/en not_active Application Discontinuation
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