Browse Publications Technical Papers 2008-01-1011
2008-04-14

High Performance Idle Speed Control Based on the Tuning Functions 2008-01-1011

Idle speed reduction is one of the important solutions for fuel economy improvement. However, idle speed reduction requires improving the disturbance rejection performance of idle speed control to prevent malfunctions such as engine stall. In mass production engines, PID control is mainly used for the idle speed control because of easiness of the design. However the idle speed control system has nonlinear characteristics. Therefore we have developed the algorithm based on the sliding mode control(SMC) [1]. As a result, superior performance was obtained [2]. Furthermore, for performance, we developed the new algorithm based on Tuning Functions (TF) [3]. As a result, high disturbance rejection performance was obtained.

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