汽油机怠速稳定性的复合模糊-PID控制方法研究  

Study of Compound Fuzzy-PID Control Method for Gasoline Engine Idling Speed Control

作　　者：李岳林[1] 王立标[1] 曾志伟[1] 杜宝杰[1] 汤彬[1] 刘省波[1] 李薛[1] 

机构地区：[1]长沙理工大学汽车与机械工程学院,长沙410076

出　　处：《内燃机工程》2010年第3期57-60,66,共5页Chinese Internal Combustion Engine Engineering

基　　金：湖南省自然科学基金资助项目(06JJ20045);湖南省教育厅重点资助科研项目(07A004)

摘　　要：汽油机怠速不稳定是目前怠速控制存在的主要问题,为了提高怠速控制的稳态和动态特性,研究模糊控制方法在怠速控制中的应用,设计了一种新型的复合模糊-PID控制系统,在MATLAB/Simulink平台上与传统PID和模糊-PID控制系统进行了对比仿真,并在发动机台架上进行了试验验证。研究结果表明:控制系统可以显著地减小怠速波动,且在加载空调负载时,其瞬态最大波动幅值仍低于±15 r/min;控制系统具有很强的鲁棒性,适合于实车应用。Gasoline engine idling instability is a common problem of engine idling control system. In order to improve steady and dynamic characteristics of gasoline engine idling control, a new type compound fuzzy-PID control system was designed and compared with the traditional PID system through simulation by MATLAB/ Simulink and test in dynamometer. The results confirm that the compound fuzzy-PID control system can decrease remarkably idling speed fluctuation, the maximum transient ripple value is still less than 15 r/min with the air-conditioner load added and it has an enough robustness so that it is suitable for actual vehicles.

关 键 词：内燃机 汽油机 怠速 复合模糊-PID 鲁棒性 

分 类 号：TK417[动力工程及工程热物理—动力机械及工程]