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Automobile steering wheel shimmy control method

A control method, technology of steering wheels, applied in the direction of steering mechanism, vehicle parts, transportation and packaging, etc.

Inactive Publication Date: 2011-02-23
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the steering wheel alignment parameters of automobiles are generally fixed, so that it is impossible to maintain the best shimmy response of the automobile.

Method used

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  • Automobile steering wheel shimmy control method
  • Automobile steering wheel shimmy control method
  • Automobile steering wheel shimmy control method

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0065] Vehicle speed V, vehicle mass m w And the caster angle α is several key factors affecting the steering wheel shimmy. For a given vehicle, among the parameters listed in formulas (1) to (7), except that the vehicle speed and vehicle quality vary with the technical conditions of the vehicle and the conditions of carrying people and goods, other parameters are fixed (or change small enough to be ignored). Therefore, the current driving technical conditions of the given vehicle are measured by the sensor, and the optimal caster angle α is calculated under the current driving technical conditions of the given vehicle by using the preset system motion differential equation opt , through the real-time adjustment of the kingpin caster angle α by the actuator, a more ideal shimmy control effect can be obtained.

[0066] In specific implementation, figure 2 The system shown involves steering wheel 1, kingpin 2 and steering wheel 4, and the system settings should include:

[...

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Abstract

The invention discloses an automobile steering wheel shimmy control method, which is characterized in that: the running speed V and the complete vehicle mass mw of the automobile are detected by sensors, the optimal caste angle alpha opt of the current automobile steering wheel is calculated and analyzed by a central control unit according to a preset differential equation of motion of a system, and the caster angle alpha of the steering wheel is adjusted by an executive unit in real time to ensure that the steering wheel is positioned in the optimal caster angle state so as to reduce the shimmy of the automobile steering wheel. The method can effectively solve the problem of wheel shimmy in the running process of the automobile, and improves the control stability and safety in the process of driving the automobile.

Description

technical field [0001] The invention relates to a method for controlling the steering wheel shimmy of an automobile, which is mainly applied to the control of the shimmy of the steering wheel of an automobile, and can also be applied to the control of the shimmy of the steering wheel of other motor vehicles or the control of the shimmy of the wheel when an aircraft such as an aircraft lands . Background technique [0002] Steering wheel shimmy refers to the phenomenon that the steering wheel continues to vibrate around the kingpin with a certain amplitude and frequency when the car is driving straight on a flat road. When shimmy occurs, the steering wheel swings left and right with a certain frequency and amplitude. When it develops to a certain extent, it will even cause the car to move in a snaking manner, and the steering wheel will vibrate violently, which may further cause the body to shake. Steering wheel shimmy will aggravate tire wear, increase the dynamic load of ...

Claims

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Application Information

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IPC IPC(8): B62D17/00
Inventor 卢剑伟张代胜姜平陈磊辛加运吴继祥汪洋王锡锌吴彰伟张士路
Owner HEFEI UNIV OF TECH