State-dependent Kalman filters for robust engine control

Dutka, Arkadiusz and Javaherian, Hossein and Grimble, Michael J. (2006) State-dependent Kalman filters for robust engine control. In: American Control Conference, 2006-06-14 - 2006-06-16. (https://doi.org/10.1109/ACC.2006.1656378)

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Abstract

Vehicle emissions variations impose significant challenges to the automotive industry. In these simulation studies, nonlinear estimation techniques based on state-dependent and extended Kalman filtering are developed for spark ignition engines to enhance robustness of the feedforward fuel controllers to changes in nominal system parameters and measurement errors. A model-based approach is used to derive the optimal filters. Numerical simulations indicate the superiority of estimation-based approaches to enhance robustness of in-cylinder air estimation which directly contributes to the precision of engine exhaust air-fuel ratio and, consequently the consistency of the tailpipe emissions. The results obtained are for an aggressive driving profile and are presented and discussed

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