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

Dina Shona Laila, E. Grunbacher

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

9 Citations (Scopus)


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.
Original languageEnglish
Title of host publication2008 47th IEEE Conference on Decision and Control
Number of pages6
ISBN (Electronic)978-1-4244-3124-3
ISBN (Print)978-1-4244-3123-6
Publication statusPublished - 2009
Event47th IEEE Conference on Decision and Control - Cancun, Mexico
Duration: 9 Dec 200811 Dec 2008

Publication series

NameProceedings of the IEEE Conference on Decision & Control, including the Symposium on Adaptive Processes
ISSN (Print)0191-2216


Conference47th IEEE Conference on Decision and Control
Internet address

Bibliographical note

The full text is currently unavailable on the repository.


  • Output feedback
  • Combustion
  • Engines
  • Testing
  • Observers
  • Control design
  • Torque measurement
  • Velocity measurement
  • Convergence
  • Numerical simulation
  • state feedback
  • control system synthesis
  • discrete time systems
  • internal combustion engines
  • nonlinear control systems
  • state feedback controller
  • discrete-time nonlinear observer
  • output feedback design
  • combustion engine control design
  • controller construction
  • discrete-time partial state observer design
  • observer convergence
  • output feedback controller
  • Static and dynamic observers
  • Combustion engine test bench control
  • Controller redesign
  • Discrete-time systems
  • Extended Hammerstein systems
  • Setpoint tracking


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