This paper deals with the estimation of the actuator temperature in an electropneumatic system. First, an appropriate nonlinear system that accounts for the actuator temperature dynamics is introduced. Then in order to overcome the difficulty of installing temperatures sensors in each chamber of the actuator, two nonlinear high-gain observers are proposed to provide online estimate of these temperatures. The gain of both observers can be tuned by the choice of a scalar design parameter. However, the design parameter is constant for the first observer and its choice has to satisfy a compromise between an accurate estimation of the state estimation and a satisfactory sensitivity of the observer with respect to the unavoidable output noise measurements. This difficulty is overcome in the second observer since the scalar design parameter is time varying and is governed by a Riccatti differential equation. The involved adaptation process of the design parameter is mainly driven by the power of the output observation error norm computed on a moving horizon window. Simulation results are given to show the effectiveness of the proposed observers and in particular to compare the performance of both observers, namely, the accuracy of the respective estimates and their sensitivity with respect to noise measurements.
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February 2016
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Dynamic High-Gain Observer to Estimate Pneumatic Actuator Temperatures
A. Ayadi,
A. Ayadi
Laboratory Lab-STA,
LR11ES50,
National School of Engineering of Sfax,
University of Sfax,
PB 1173,
Sfax 3038, Tunisia
e-mail: ayadiassil@yahoo.fr
LR11ES50,
National School of Engineering of Sfax,
University of Sfax,
PB 1173,
Sfax 3038, Tunisia
e-mail: ayadiassil@yahoo.fr
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S. Hajji,
S. Hajji
Laboratory Lab-STA,
LR11ES50,
National School of Engineering of Sfax,
University of Sfax,
PB 1173,
Sfax 3038, Tunisia
e-mail: hjjisfin@yahoo.fr
LR11ES50,
National School of Engineering of Sfax,
University of Sfax,
PB 1173,
Sfax 3038, Tunisia
e-mail: hjjisfin@yahoo.fr
Search for other works by this author on:
M. Smaoui,
M. Smaoui
Laboratoire Ampere,
UMR CNRS 5005,
INSA-Lyon,
Université de Lyon,
Villeurbanne,
Lyon F-69621, France
e-mail: mohamed.smaoui@insa-lyon.fr
UMR CNRS 5005,
INSA-Lyon,
Université de Lyon,
Villeurbanne,
Lyon F-69621, France
e-mail: mohamed.smaoui@insa-lyon.fr
Search for other works by this author on:
A. Chaari,
A. Chaari
Laboratory Lab-STA,
LR11ES50,
National School of Engineering of Sfax,
University of Sfax,
PB 1173,
Sfax 3038, Tunisia
e-mail: abdessattar2004@yahoo.fr
LR11ES50,
National School of Engineering of Sfax,
University of Sfax,
PB 1173,
Sfax 3038, Tunisia
e-mail: abdessattar2004@yahoo.fr
Search for other works by this author on:
M. Farza
M. Farza
Laboratoire GREYC,
UMR CNRS 6072,
ENSICAEN,
Université de Caen,
Caen 14032, France
e-mail: mondher.farza@unicaen.fr
UMR CNRS 6072,
ENSICAEN,
Université de Caen,
Caen 14032, France
e-mail: mondher.farza@unicaen.fr
Search for other works by this author on:
A. Ayadi
Laboratory Lab-STA,
LR11ES50,
National School of Engineering of Sfax,
University of Sfax,
PB 1173,
Sfax 3038, Tunisia
e-mail: ayadiassil@yahoo.fr
LR11ES50,
National School of Engineering of Sfax,
University of Sfax,
PB 1173,
Sfax 3038, Tunisia
e-mail: ayadiassil@yahoo.fr
S. Hajji
Laboratory Lab-STA,
LR11ES50,
National School of Engineering of Sfax,
University of Sfax,
PB 1173,
Sfax 3038, Tunisia
e-mail: hjjisfin@yahoo.fr
LR11ES50,
National School of Engineering of Sfax,
University of Sfax,
PB 1173,
Sfax 3038, Tunisia
e-mail: hjjisfin@yahoo.fr
M. Smaoui
Laboratoire Ampere,
UMR CNRS 5005,
INSA-Lyon,
Université de Lyon,
Villeurbanne,
Lyon F-69621, France
e-mail: mohamed.smaoui@insa-lyon.fr
UMR CNRS 5005,
INSA-Lyon,
Université de Lyon,
Villeurbanne,
Lyon F-69621, France
e-mail: mohamed.smaoui@insa-lyon.fr
A. Chaari
Laboratory Lab-STA,
LR11ES50,
National School of Engineering of Sfax,
University of Sfax,
PB 1173,
Sfax 3038, Tunisia
e-mail: abdessattar2004@yahoo.fr
LR11ES50,
National School of Engineering of Sfax,
University of Sfax,
PB 1173,
Sfax 3038, Tunisia
e-mail: abdessattar2004@yahoo.fr
M. Farza
Laboratoire GREYC,
UMR CNRS 6072,
ENSICAEN,
Université de Caen,
Caen 14032, France
e-mail: mondher.farza@unicaen.fr
UMR CNRS 6072,
ENSICAEN,
Université de Caen,
Caen 14032, France
e-mail: mondher.farza@unicaen.fr
Contributed by the Dynamic Systems Division of ASME for publication in the JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL. Manuscript received February 11, 2015; final manuscript received November 21, 2015; published online December 23, 2015. Assoc. Editor: Yang Shi.
J. Dyn. Sys., Meas., Control. Feb 2016, 138(2): 024503 (7 pages)
Published Online: December 23, 2015
Article history
Received:
February 11, 2015
Revised:
November 21, 2015
Citation
Ayadi, A., Hajji, S., Smaoui, M., Chaari, A., and Farza, M. (December 23, 2015). "Dynamic High-Gain Observer to Estimate Pneumatic Actuator Temperatures." ASME. J. Dyn. Sys., Meas., Control. February 2016; 138(2): 024503. https://doi.org/10.1115/1.4032132
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