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.


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    Title :

    Multivariable Control of Engine Idle Speed


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Congress & Exposition ; 1997



    Publication date :

    1997-02-24




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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