汽油机怠速控制策略仿真与实验研究  

Simulation and Experimental Research about Idle Speed Control Strategy of Gasoline Engine

作　　者：高瑶瑶[1] 司爱国[1] 柏春良[1] 郭浩[1] 

机构地区：[1]华北水利水电学院,河南郑州450011

出　　处：《华北水利水电学院学报》2012年第5期80-83,共4页North China Institute of Water Conservancy and Hydroelectric Power

摘　　要：为了提高发动机怠速过程的稳态和动态特性,采用MATLAB/Simulink软件对发动机怠速系统进行了模拟仿真,研究了模糊控制理论在发动机怠速控制中的应用,根据3种不同控制策略的控制结果的对比,得出了采用PID与模糊控制相结合的复合控制策略控制效果最佳的结论.实验与仿真结果表明,该控制策略不仅提高了汽油机怠速的稳定性,而且降低了怠速时转速的波动幅度.In order to improve the steady state and dynamic characteristics of the engine idling process, using MATLAB/Simulink soft- ware, the fuzzy control theory is applied in engine idling process control. Through comparing with three different control strategies, it is found that the hybrid control strategy with the combination of PID and fuzzy control is the best in engine idling process control. The re- sults of test and computer simulation indicate that the strategy can not only improve the stability of gasoline engine idling, but also re- duce the undulate of idle speed.

关 键 词：怠速控制 PID控制 模糊控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]