Fuzzy PID Model -Based Study on Idle Control of Gas Engine

ABSTRACT

Nowadays, natural gas conforms to the conditions of environmental protection and renewable energy, which plays a significant role in the future development of mankind. It has made some progress in applying natural gas to the automotive industry. As we all know that the source power of automobile comes from engine, therefore, based on the study on the control algorithm of gas engine, this paper aims to provide theoretical basis for further application of gas engine. This paper analyzed PID control algorithm, fuzzy control algorithm and fuzzy PID control algorithm, designed corresponding controllers based on the algorithm principles, applied these three algorithms to the idle control process of the automobile gas engine. This paper concluded that the fuzzy PID control algorithm is of higher superiority through contrastive analysis on the control effects of theses three algorithm in the process of cooling high idle start, switching high idle to low idle and switching low idle to high idle.

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