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High‐order sliding mode for an electropneumatic system: A robust differentiator–controller design
Author(s) -
Smaoui M.,
Brun X.,
Thomasset D.
Publication year - 2007
Publication title -
international journal of robust and nonlinear control
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.361
H-Index - 106
eISSN - 1099-1239
pISSN - 1049-8923
DOI - 10.1002/rnc.1235
Subject(s) - differentiator , control theory (sociology) , actuator , acceleration , mode (computer interface) , controller (irrigation) , sliding mode control , robust control , control engineering , computer science , process (computing) , accelerometer , displacement (psychology) , engineering , control system , control (management) , nonlinear system , filter (signal processing) , physics , psychology , electrical engineering , classical mechanics , quantum mechanics , artificial intelligence , psychotherapist , agronomy , computer vision , biology , operating system
This paper deals with the robust control problem of a pneumatic actuator subject to parameter uncertainties and load disturbances. The control strategies are based on second‐ and third‐order sliding mode approaches. These controllers require measurements of acceleration for feedback. However, accelerometer is seldom used in practical drive systems, because of the complexity they add to the overall process as they are mounted to the load in displacement. For this, a robust differentiator via sliding mode is used to estimate the acceleration. A comparative study between the robust differentiator and a classical one is presented. Implementation results of the proposed sliding mode differentiator–controller design on an experimental set‐up are given to illustrate the developments. Copyright © 2007 John Wiley & Sons, Ltd.