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Authors
Deur, Josko; Kolmanovsky, Ilya; Hrovat, Davor

Identifier
10.3182/20070820-3-US-2918.00013

Index Terms
SI engine,observer,torque estimation,parameter estimation

Abstract
Engine load torque estimators are sensitive to errors in engine torque reconstruction. In order to increase the estimation accuracy, a combined estimator of load torque and engine torque parameters is proposed in this paper. The combined estimator is based on a set-membership method, and known load torque and parameter bounds. The emphasis is on analysis of estimation error and related practical guidelines for improved performance. The estimator is verified by experiment.

References

[1] Deur, J., D. Hrovat, J. Petric, and Ž. Šitum (2003). "A
    Control-Oriented Polytropic Model of SI Engine Intake
    Manifold", ASME Congress, CD Vol. 2, Washington, D.C.
[2] Deur, J., D. Pavkovic, and D. Hrovat (2004). Estimation of SI
    Engine Load Torque: Adaptive Kalman Filter vs. Luenberger
     Estimator. ASME Congress, CD Vol. 2, Anaheim, CA.
[3] Doering J.A. and M. Jankovic (2002). Powertrain Torque
    Estimate, US patent No. 6427109 B1.
[4] Fodor, M.G. and D. Hrovat (2000). Method and Apparatus
    for Estimating Applied Wheel Torque in a Motor Vehicle,
    US Patent No. 6154702.
[5] Jankovic, M. and S. W. Magner (2001). Cylinder air-charge
    estimation for advanced intake valve operation in variable
    cam timing engines, JSAE Review, 22, 445-452.
[6] Kolmanovsky, I., I. Sivergina, and J. Sun (2004). Combined
    Input and Parameter Estimation with Input Observers and
    Set-Membership Parameter Bounding. 43rd IEEE CDC,
    Atlantis, Paradise Island, the Bahamas, 5192-5197.
[7] Stotsky, A., B. Ergardt and S. Eriksson (2000). Variable
    Structure Control of Engine Idle Speed With Estimation of
    Unmeasurable Disturbances, ASME Journal of Dynamic
    Systems, Measurement, and Control, 122, 599-603.
[8] Stotsky, A. and I. Kolmanovsky (2002). Application of Input
    Estimation Techniques to Charge Estimation and Control in
    Automotive Engines. Control Engineering Practice, 10,
    1371-1383.