基于模糊PID-Smith控制的汽车怠速控制方法的研究

Study with fuzzy PID-Smith controller on Idle speed controlling of automobile

用模糊控制方式,结合它们的优点提出了汽车发动机怠速的模糊PID-Smith控制方式。改善了PID控制方式对扰动的敏感性,避免了Smith预估器对被控对象控制模型要求严格的缺陷,增强了控制系统的鲁棒性。经过仿真证实了这种控制方式应用于汽车发动机怠速控制的可行性。

By combining with these control modes＇ strongpoints, a new method named Fuzzy PIDSmith control mode is presented in this paper. This new method amends the PID control mode＇s sensitivity for the control mode, mends the Smith control mode＇s severe requirements for the controlled object , and improves the inertia of controlled system. It is confirmed that it is possible to apply this method to idle speed control by the simulation of idle speed control with this Fuzzy PID-Smith control mode in order to improve the performance of idle speed control.