[論文] 비례적분 방식의 피드백 공연비 콘트롤 시스템 해석

Air/fuel ratio control system for gasoline engines has been analyzed to determine the control gain of the system. In this analysis the engine is modelled to be a simple time delaying element and the ramp-and-jump method is used to control air/fuel ratio. The result shows that it is neces­sary to measure the air flow rate accurately to enhance the control performance. And also it is shown that the control gain must be determined in some bounded region to meet the fast dyna­mic response and high catalyst conversion efficiency together.