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中文摘要：
为了提高汽车操纵的轻便性和灵活性，提出了将单纯形方法与模糊PID控制方法相结合设计EPS控制器的改进方法，为优化设计提供了理论依据。建立了EPS的数学模型、设计了调节控制器参数的模糊控制规则，并运用MatLab优化控制工具箱建立系统模型并进行了Simulink仿真实验研究。仿真结果表明：本设计方法大大地改善了系统的时域响应，提高了汽车操纵的轻便性和灵活性。
英文摘要：
To raise the handiness and agility of vehicles＇steering, a method which combines simplicity shape algorithm with fuzzy PID control method, is brought forward to design EPS controller. This method provides theoretical basis for optimizing the design of the controller. Then we build the EPS math model and design fuzzy control rules of regulating controller＇s parameters. The system model is buitlt with optimization toolbox in MatLab and the simulation experiment studies are carried out in Simulink. The results of simulation experiment confirm that this method can enormously improve the time domain performance evaluation, and improve handiness and agility of vehicles＇steerer.
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