A Nonlinear Analysis of Driver-Vehicle Performance with Four Wheel Steering Using Time Delay Control Method

M. Cao, Qiang Li, Feng Cheng
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Abstract

The authors have adopted a time delay control method to roundly analyze vehicle dynamic capability equipped with four wheel steering based on close-loop driver vehicle system, especially, driver's steering behavior tends to become more discontinuous while performing an activity during driving. The single-loop quasi-linear driver steering model can certainly be applied to modeling of a 5 DOF vehicle coupling system. To quantify vehicle performance, the steering control is obtained by step input as the steering angles of the front/rear wheels. The simulation result indicates that the proposed method is very effective in the performance of the vehicle maneuverability at low speed and stability at high speed.
基于时滞控制方法的四轮转向人车性能非线性分析
基于闭环驾驶车辆系统,采用时滞控制方法对配备四轮转向的车辆动态性能进行了全面分析,特别是驾驶员在驾驶过程中进行某项活动时转向行为趋于不连续。所建立的单回路准线性驾驶员转向模型可以应用于五自由度车辆耦合系统的建模。为了量化车辆性能,转向控制是通过前后轮转向角的阶跃输入来获得的。仿真结果表明,该方法在提高车辆低速机动性能和高速稳定性方面是非常有效的。
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