A multivariable Linear Quadratic Gaussian (LQG) control algorithm is developed for engine idle speed control. Difficulties posed by inherent engine non-linearity, time varying engine events and delays are considered. A non-linear engine model used to design and test the control algorithm is described. Control engineers can use the engine model and control algorithm as a basis for further work in this area. A dynamic feedforward compensation which dramatically reduces disturbance deviations is also described. Finally, the effects of typical production air-to-fuel ratio control on the idle speed control system are evaluated.
Multivariable Control of Engine Idle Speed
Sae Technical Papers
International Congress & Exposition ; 1997
24.02.1997
Aufsatz (Konferenz)
Englisch
Multivariable control of engine idle speed
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