Model Based Nonlinear Observers for Torque estimation on a Combustion Engine Test Bench

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Abstract

Torque is an important quantity in combustion engine test bench control but unfortunately very difficult to measure. Observers can be used as an alternative to sensors to estimate the torque based on a nonlinear model and the available measured output signals, engine speed and dynamometer speed. In this paper three nonlinear observers are designed for a combustion engine test bench simulator including combustion oscillations as well as noisy measurements and disturbed inputs. The well known Extended Kalman Filter (EKF), a High Gain Observer (HGO) and a Sliding Mode Observer (SMO) are compared in terms of the quadratic estimation error, computing time and convergence rate. Finally a comparison with a linear Kalman Filter which is still frequently used is shown.
Original languageEnglish
Title of host publication17th IEEE International Conference on Control Applications, CCA
Pages221-226
Number of pages6
DOIs
Publication statusPublished - Sept 2008

Publication series

NameProceedings of the IEEE International Conference on Control Applications

Fields of science

  • 202 Electrical Engineering, Electronics, Information Engineering
  • 202027 Mechatronics
  • 202034 Control engineering
  • 203027 Internal combustion engines
  • 206001 Biomedical engineering
  • 206002 Electro-medical engineering
  • 207109 Pollutant emission

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