Robust Estimator Design for Control of Electropneumatic System

ABSTRACT

This paper proposes a new estimation scheme for both speed and acceleration signals in order to include them in a control loop for dynamic system. The proposed scheme consists to improve higher order sliding modes estimator where it can cope with measurement noise better than the classic one. Then, the estimator parameters are online updated with respect to the measured signal variations to reach a good compromise between precision and noise robustness. The tuning formulas of gains estimator are developed by Lyapunov analysis. Simulation and experimental results are presented to confirm the expected performance of the proposed estimator. Thus, its validity is demonstrated by an experimental test in the control context for an electropneumatic system.

KEYWORDS:

• Differentiator
• Dynamic gains
• Electropneumatic system
• Estimator/Controller design
• Experimentation
• Higher order sliding modes

DISCLOSURE STATEMENT

No potential conflict of interest was reported by the authors.

Additional information

Notes on contributors

L. Sidhom

Lilia Sidhom was born in Nabeul in 1982. She received the automatic and industrial computing degree from the National Institute of Applied Sciences and Technology, Tunis, in 2006, and the MSc and PhD degrees in automatic from the National Institute of Applied Sciences of Lyon (INSA Lyon), Villeurbanne, France, in 2007 and 2011, respectively. She has been an assistant professor with the Electrical Department at Higher Institute of Applied Science and Technology of Gafsa during 2013–2016. Actually, she is an assistant professor at National School of Engineers of Bizerte, since September 2016. Her current research is on advanced control of fluid power and mechatronics systems, in soft sensors, fault detection, and observer/estimator.

E-mail: [email protected]

M. Smaoui

Mohamed Smaoui was born in Sfax, Tunisia, in 1976. He received the electrical engineering degree from the National School of Engineers of Sfax in 2000, and the MSc and PhD degrees in automation from the INSA Lyon, Villeurbanne, France, in 2001 and 2004, respectively. He is a senior lecturer with the Department of Mechanical Engineering, INSA Lyon, since 2005. His current research interests include advanced control of mechanical systems.

E-mail: [email protected]

X. Brun

Xavier Brun was born in France in 1973. He received the PhD degree from the INSA Lyon, Villeurbanne, France, in 1999. He became an associate professor with the AMPERE UMR 5005 CNRS Laboratory, INSA Lyon, in 2001, where he has been a professor since 2011. His current research interests include control for mechatronics and fluid power systems.

E-mail: [email protected]

E. Bideaux

Eric Bideaux was born in France in 1968. He received the PhD degree from the Besançon Franche Comte University, Besançon, in 1995. He became an associate professor with the Laboratoire d'Automatique Industrielle, INSA Lyon, in 1995, where he has been a professor with the AMPERE UMR 5005 CNRS Laboratory, INSA Lyon, since 2006. His current research interests include control theory, system modelling, and system simulation for several kind of application: vehicle, aeronautics, medical robotics, and buildings.

E-mail: [email protected]