基于Fuzzy-PID汽油机怠速控制器的设计  

Design of Gasoline Engine Idle Speed Controller Based on Fuzzy-PID

作　　者：刘春艳[1] 钮王杰[1] 闫池[1] 

机构地区：[1]运城学院机电工程系,山西运城044000

出　　处：《重庆交通大学学报（自然科学版）》2011年第2期300-302,339,共4页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：山西省高校科技开发项目(200811050)

摘　　要：通过对汽油机怠速工况的分析,采用PID与模糊控制相结合的复合控制策略,即在大偏差范围内采用模糊控制,小偏差范围内转换成PID控制,使系统在较大误差时追求速度,在较小误差时强调精度。仿真结果表明:该控制策略使系统实现了快速、平稳、无误差跟踪的特性,怠速工况的控制精度大为提高,系统的控制品质大为改善。Based on analysis of petrol engine idling working condition,mixing up methods of PID and fuzzy controlling were employed.If there was large deviation,fuzzy control could be applied;if not,PID control should be employed.In this way,speed could be achieved when there was big error;accuracy could be guaranteed when there was small error.Simulation results indicated that speed,stability and accuracy were realized;accuracy under idling working condition and quality of the system were improved.

关 键 词：怠速控制 模糊控制 PID控制 

分 类 号：TP1[自动化与计算机技术—控制理论与控制工程]