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Fast control prototype realization method of active rear wheel steering

A technology of rear wheel steering and fast control, which is applied in the direction of vehicle steering/bump performance, can solve problems such as high cost and long development cycle, and achieve the effects of increasing development speed, reducing development cost, and shortening development cycle

Inactive Publication Date: 2016-01-13
BEIJING UNIV OF TECH
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AI Technical Summary

Problems solved by technology

[0003] At present, the research on the active rear wheel steering system is generally carried out by means of numerical simulation, bench test, and prototype test. The development cycle is long and the cost is high.

Method used

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  • Fast control prototype realization method of active rear wheel steering

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Embodiment Construction

[0012] Exemplary embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0013] Such as figure 1 Shown is a schematic diagram of the structure of a rapid control prototype implementation method for active rear wheel steering. At first, carry out dynamic analysis to active rear wheel steering system, set up its mathematical model, according to established mathematical model, set up controller model (18), rear wheel active steering system in industrial computer (14) MATLAB / Simulink software platform The vehicle dynamics model (17), the input signal processing module (19), and the output signal processing module (20). The effectiveness of the controller is verified by off-line digital simulation of the active rear wheel steering system using simulation tools. Secondly, steering wheel angle sensor (7), yaw rate sensor (8), lateral acceleration sensor (9), rear wheel steering motor displacement sensor (10), wheel speed sen...

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Abstract

The present invention provides a fast control prototype realization method of an active rear wheel steering, belonging to the field of the steering control system. The fast control prototype realization method of the active rear wheel steering comprises a steering sensor of a steering wheel, a wheel speed sensor, a yaw velocity sensor, a longitudinal acceleration sensor, an industrial control computer, a terminal board, a display and a steering motor. The prototype is fast controlled according to established active steering of the rear wheel, real time acquisition and output of data are perform, the control of the active steering of the rear wheel is realized, and the correctness of the control algorithm is verified, therefore the rapid development of the controller is realized, the development cost is reduced, the development period is shortened, and the development efficiency is improved. The fast control prototype realization method of the active rear wheel steering is applicable to an electric vehicle having rear wheels driven by an in-wheel motor, so that the steering stability of the vehicle may be improved, the dynamic property of the vehicle system is improved, and the handling stability of the vehicle may be ensured in the condition of the invalidation of the front wheel steering. Moreover, the assisting steering of the rear wheel may be realized through the control of the rotate speed of the in-wheel motor.

Description

technical field [0001] The invention relates to a rapid control prototype realization method of active rear wheel steering, which belongs to the field of steering control systems. Background technique [0002] With the development of modern automobile technology, more and more automobiles enter the family, traffic accidents occur frequently, and people's requirements for steering performance and driving stability of automobiles are increasing day by day. The quality of the automobile steering system directly affects the handling stability of the automobile. How to design an efficient steering system has gradually become one of the hot spots in automobile research and design. Compared with the traditional front-wheel steering system, the active rear-wheel steering system can effectively improve the maneuverability of the vehicle at low-speed steering and the handling stability of high-speed steering, and improve the dynamic performance of the vehicle. [0003] At present, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/06
Inventor 冯能莲陈龙科米磊王军张春强
Owner BEIJING UNIV OF TECH
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