Front wheel and rear wheel drive steering control system of automobile

A technology of active steering and rear wheel steering, which is applied in the direction of automatic steering control components, steering mechanism, steering rod, etc., can solve the problem that the yaw rate and the side slip angle of the center of mass cannot be controlled at the same time, so as to improve the lateral dynamics performance, Effects of improving driving characteristics and enhancing handling stability
CN101618733BInactive Publication Date: 2011-05-04SHANGHAI JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI JIAOTONG UNIV
Publication Date
2011-05-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a front wheel and rear wheel drive steering control system of an automobile in the technical field of automobile engineering. Steering wheel steering angle sensors are respectively connected with a drive turning electronic control unit; one end of each steering wheel steering angle sensor is connected with a steering wheel, and the other end of each steering wheel steering angle sensor is connected with a front wheel steering motor servo control unit; the front wheel steering motor servo control unit is respectively connected with a front wheel steering angle displacement sensor and a front wheel steering execution mechanism; a rear wheel steering motor servo control unit is respectively connected with a rear wheel steering angle displacement sensor and a rear wheel steering execution mechanism; the front wheel steering execution mechanism is connected with a front wheel, and the rear wheel steering execution mechanism is connected with a rear wheel. The invention combines front wheel drive steering and rear wheel drive steering, improves the lateral dynamic performance of the automobile, the driving characteristics of a driver and the operating stability of the automobile, changes a steering angle of the front wheel and the rear wheel in real time according to the drive working condition and a running parameter of the automobile and ensures that the automobile response follows the output response of a reference automobile model.
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Description

technical field

[0001] The invention relates to a control system in the technical field of automobile engineering, in particular to an active steering control system for front and rear wheels of an automobile. Background technique

[0002] Automobile steering control system is mainly used to control the lateral movement of the automobile. In recent years, active steering systems, including front active steering (AFS) and rear active steering (ARS), have been applied in real vehicles. The front wheel active steering system provides a corrected front wheel steering angle according to the driving conditions of the vehicle, which can provide the driver with better control performance. Active rear wheel steering (also known as four-wheel steering, 4WS) controls the steering angle of the rear wheels, changes the lateral force of the rear wheels, and makes the rear wheels directly participate in the control of the lateral movement of the vehicle. However, either front-wheel activ...

Claims

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