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Engine Control System Sensitivity
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English
Abstract
THIS PAPER describes the use of sensitivity functions to investigate the sensitivity of engine control systems to unknown variations in parameters. The definition of output sensitivity functions and the derivation of their defining differential equations are reviewed. A structural method for generating a sensitivity model is presented and applied to a second order example. Finally, the sensitivity model for EGR valve gain of an eighteen state linear perturbation engine model is generated and the resulting sensitivity functions used to predict how engine response changes for changes in the gain of the EGR valve. These predictions are then shown to be accurate by comparison with simulations of the engine model for various values of the EGR valve gain.
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Authors
Citation
Rillings, J., "Engine Control System Sensitivity," SAE Technical Paper 820386, 1982, https://doi.org/10.4271/820386.Also In
References
- Bikhovski, M. L. “Sensitivity and Dynamic Accuracy of Control Systems” Engineering Cybernetics (USSR) 121 134 1964
- Kokotovic, P. V. Rutman, R. S. “Sensitivity of Automatic Control Systems” Automation and Remote Control, (USSR) 26 727 749 1965
- Vuskovic, M. Circic, V. “Structural Rules for Determination of Sensitivity Functions of Nonlinear, Nonstationary Systems” Proceedings of International Symposium on Sensitivity Dubrovnik, Yugoslavia 1964 154 165 Pergaman Press, Oxford 1966
- Lewis, James B. “Automotive Engine Control: A Linear Quadratic Approach” Research Publication GMR-3563 1980 General Motors Research Laboratories Warren, Michigan