Discrete-time nonlinear observer and output feedback design for a combustion engine test bench

Laila, D.S. and Gruenbacher, E. (2009) Discrete-time nonlinear observer and output feedback design for a combustion engine test bench. In, 47th IEEE Conference on Decision and Control, Cancun, Mexico, 09 - 11 Dec 2008. New York, US, Institute of Electrical and Electronics Engineers, 5718-5723. (doi:10.1109/CDC.2008.4738943).


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Combustion engine control design depends strongly on the availability and the quality of the measurement of quantities involving in the controller construction. In general, not all quantities are available through direct measurement, and therefore an observer is often necessary to realize the controller. In this paper, a discrete-time partial state observer design for a combustion engine test bench is proposed. The observer is used to estimate the torque and the torsion angle of the engine, based on the measurement of the engine and the dynamometer speeds. The convergence of the observer is shown, and separation principle is also proved. The observer is used for constructing an output feedback controller for set point tracking of the test bench. Some numerical simulations are performed, showing the performance of the observer and also comparing the performance of the output feedback controller with the state feedback controller. A discussion, comparing a so called static observer and a dynamic observer which are possible to construct using the same approach, is also presented

Item Type: Conference or Workshop Item (Paper)
Digital Object Identifier (DOI): doi:10.1109/CDC.2008.4738943
Additional Information: ISSN 0191-2216
ISBNs: 9781424431236
Keywords: combustion engine test bench control, controller redesign, discrete-time systems, extended hammerstein systems, setpoint tracking, static and dynamic observers
Subjects: T Technology > TJ Mechanical engineering and machinery
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions : Faculty of Engineering and the Environment > Engineering Sciences > Electro-Mechanical Research Group
ePrint ID: 199677
Accepted Date and Publication Date:
6 January 2009Published
Date Deposited: 19 Oct 2011 13:08
Last Modified: 31 Mar 2016 13:45
URI: http://eprints.soton.ac.uk/id/eprint/199677

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