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System and method for estimating side drift angle of motor vehicle

A technology for sideslip angle and motor vehicles, which is applied in the directions of calculation, navigation calculation tools, instruments, etc., can solve the problems of lower cost of motor vehicles, expensive gyroscopes, and inability to use, and achieve the effect of cost reduction

Active Publication Date: 2010-05-05
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] As mentioned above, the side slip angle of the motor vehicle can be measured, but this method requires a relatively expensive gyroscope, which cannot be used on economical motor vehicles, so it is very unfavorable to reduce the cost of motor vehicles

Method used

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  • System and method for estimating side drift angle of motor vehicle
  • System and method for estimating side drift angle of motor vehicle
  • System and method for estimating side drift angle of motor vehicle

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0036] According to the vehicle slip angle estimation system provided by the present invention, such as figure 1 As shown, it includes a wheel angular velocity acquisition unit 20, a steering wheel angle sensor 50, and a side slip angle estimation unit 60. The wheel angular velocity acquisition unit 20 includes a right front wheel angular velocity sensor 21, a left front wheel angular velocity sensor 22, a right rear The wheel angular velocity sensor 23, the left rear wheel angular velocity sensor 24; the steering wheel angle sensor 50 for measuring the steering wheel rotation angle; the slip angle estimation unit 60 and the wheel angular velocity acquisition unit 20 and the steering wheel angle sensor 50 Electrical connection for calculating vehicle sideslip angle.

[0037] figure 2 Shown is the kinematic relationship of the four-wheeled ve...

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Abstract

The present invention relates to an automotive vehicle side slip angle estimation system and its estimating method. Said system includes wheel angular speed acquisition unit, steering wheel angle sensor and side slip angle estimation unit. The wheel angular speed acquisition unit includes right front wheel angular speed sensor, left front wheel angular speed sensor, right rear wheel angular speedsensor and left rear wheel angular speed sensor. The side slip angle estimation unit is electrically connected with the described wheel angular speed acquisition unit and steering wheel angle sensor.

Description

technical field [0001] The invention relates to an estimation system and an estimation method for the side slip angle of a motor vehicle, and belongs to the field of motor vehicle control. Background technique [0002] The side slip angle of a motor vehicle is a very important parameter in the steering stability control of a motor vehicle, but it cannot be measured directly by a sensor. It is usually necessary to use various sensors to measure other related parameters, and to combine certain algorithms to estimate the sideslip angle of the motor vehicle. [0003] A commonly used method for calculating the side slip angle of a motor vehicle is given in USP 6681180. One embodiment of the patent includes a GPS receiver 22 mounted on a vehicle body (10), two antennas 26 and 28, and a gyroscope 34. The antenna 26 receives the carrier waves 20A and 20B of the satellites 16A and 16B to determine the horizontal velocity V' of the vehicle. Using the antenna 26 and the antenna 28, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C21/20G06F19/00
Inventor 宋佑川
Owner BYD CO LTD