基于模糊控制的LPG发动机空燃比试验研究

Experimental research of air-fuel ratio of LPG engine based on fuzzy control

LPG发动机的空燃比控制系统以开环和闭环相结合的方式对LPG发动机的空燃比进行控制;并通过模糊控制方式实现PID控制参数的在线调整,使系统获得响应速度快、超调量小的控制效果.试验结果表明,本控制系统在调整时间和稳定性方面都取得较好效果,改善了发动机的燃烧情况.

The air fuel ratio of the control system for LPG engine combined the open and closed loop control and applied the Fuzzy control theory to make PID parameters change online. It could control the LPG engine steadily and quickly. The results of the experiments proved that the control system reached good results and improved the LPG engine.