摘要
针对摩托车发动机瞬态工况下对空燃比控制的特殊要求,提出了一种基于发动机空燃比的模糊控制-PID控制的综合控制策略。由于系统进气时初始空燃比极大,采用模糊控制有效保证系统的稳定性,后期空燃比变化较小时则采用更加精确、稳定、快速的PID控制。基于Mat lab/Simulin K建立发动机总成的数学模型,并结合控制策略进行仿真分析,验证了方案的可行性。
According to the special requirements of air luel ratio control under the transient operating conditions of a motorcycle engine, a comprehensive control strategy based on fuzzy control -PID control of the engine air fuel ratio is presented in this paper. Due to the initial air fuel ratio is large when gas entering system, the stability of the system is ensured by fuzzy control, and when air fuel ratio change is little in the later stage, the more precise, stable and fast PID control is being used. Based on the Mat lab/SimulinK, the mathematical model of the engine assembly is established, and the simulation analysis based on control strategy is carried out to verify the feasibility of the scheme.
出处
《小型内燃机与车辆技术》
CAS
2015年第5期12-16,共5页
Small Internal Combustion Engine and Vehicle Technique
基金
浙江省国际合作科技重大专项(2013C14015)
