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首页> 外文会议>International Conference on Mechanical Engineering and Mechanics vol.2; 20051026-28; Nanjing(CN) >Vehicle Stability Control: Four-Wheel-Steer and Steer-by-Wire
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Vehicle Stability Control: Four-Wheel-Steer and Steer-by-Wire

机译：车辆稳定性控制：四轮转向和线控转向

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摘要

The vehicle stability has become more and more important with the vehicle speed increasing. To improve the vehicle stability, two active steer technologies, four-wheel-steer and steer-by-wire, have been developed. Both of four-wheel-steer and steer-by-wire can improve the vehicle handling performance through the rear wheel angle and the variable steering ratio respectively. The linear two-degree-of-freedom vehicle model is used to express the vehicle dynamics. Firstly, a new rear wheel angle formula is computed to reduce the steady sideslip angle to zero. It is proved that the steer system with four-wheel-steer will always be stable regardless of the vehicle parameters. Secondly, according to the steady steering sensitivity gain, the steering ratio formulas of front-wheel-steer and four-wheel-steer are computed to keep the steady steering sensitivity gain to be the constant. Simulation results show the effectiveness of the proposed methods.
机译：随着车速的增加，车辆的稳定性变得越来越重要。为了提高车辆的稳定性，已经开发了两种主动转向技术，即四轮转向和线控转向。四轮转向和线控转向均可通过后轮角度和可变转向比分别提高车辆的操纵性能。线性两自由度车辆模型用于表达车辆动力学。首先，计算了新的后轮角度公式，以将稳定的侧滑角减小到零。事实证明，无论车辆参数如何，四轮转向系统始终稳定。其次，根据稳定转向灵敏度增益，计算前轮转向和四轮转向的转向比公式，以使稳定转向灵敏度增益保持恒定。仿真结果表明了所提方法的有效性。

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