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Towards Robust H-infinity Control of an SI Engine's Air/Fuel Ratio
Technical Paper
1999-01-0854
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Long term stoichiometric Air/Fuel Ratio (AFR) control of an SI engine is at the present mainly maintained by table mapping of the engine's fresh air intake as a function of the engine operating point. In order to reduce a stationary error in the AFR to zero the table based control normally works in conjunction with a PI feedback from a HEGO sensor. The effective bandwidth of this feedback loop is quite small and seldom exceeds 2 Hz. This is altogether too small for accurate transient AFR control.
This paper presents a new λ (normalized Air/Fuel Ratio) control methodology (H∞ control) which has a somewhat larger bandwidth and can guarantee robustness with respect to selected engine variable and parameter variations.
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Authors
Citation
Vigild, C., Andersen, K., Hendricks, E., and Struwe, M., "Towards Robust H-infinity Control of an SI Engine's Air/Fuel Ratio," SAE Technical Paper 1999-01-0854, 1999, https://doi.org/10.4271/1999-01-0854.Also In
Electronic Engine Controls 1999: Neural Networks, Diagnostic and Electronic Hardware, and Controls
Number: SP-1419; Published: 1999-03-01
Number: SP-1419; Published: 1999-03-01
References
- Hendricks, E. Sorenson, S. C. “SI Engine Controls and Mean Value Engine Modelling,” SAE Techn ical Paper , no. 910258 1991
- Hendricks, E. Vesterholm, T. Sorenson, S. C. “Nonlinear, Closed Loop, SI Engine Control Observers,” SAE Technical Paper , no. 920237 1992
- Struwe, M. Vigild, C. W. “Robust H ∞ Control of a SI Engine's A/F-ratio, in danish,” The Technical University of Denmark, Institute for Automation Aug. 1997
- Heywood J. B. Internal Combustion Engine Fundamentals McGraw-Hill, Inc. 1 1989
- Hendricks, E. Jensen, M. Kaidantzis, P. Rasmussen, P. Vesterholm, T. “Nonlinear transient fuel film compensation (NTFC),” SAE Technical Paper , no. 930767 1993
- Hendricks, E. Jensen, M. Chevalier, A. Sorenson, S. C. Trumphy, D. Asik, J. “Modelling of the intake manifold filling dynamics,” SAE Technical Paper , no. 960037 1996
- ECM Engine Control and Monitoring 101 First Street, Suite 365, Los Altos, CA 94022, U.S.A.
- Poulsen, J. S. “Identification of SI engine submodels, in danish,” The Technical University of Denmark, Institute for Automation Mar. 1997
- Skogestad Sigurd Postlethwaith Ian Multivariable feedback control John Wiley & Sons 1996
- Lillelund Jan “Design of an Engine Control Development System, in danish,” The Technical University of Denmark, Institut for Automation 1991