This paper is concerned with the control of underactuated systems with external disturbances. Using the global sliding mode control (GSMC) technique, a new robust controller is presented to improve the robustness and stability of the system. The conditions of asymptotic stability are presented by linear matrix inequalities (LMIs). Our purpose is to build a control law so that it would enforce the states of the system to exponentially verge the sliding surface. The suggested controller has a simple structure because it is derived from the associated first-order differential equation and is able to handle the external disturbances and system nonlinearities. The efficiency of the proposed scheme is observed through simulations in an illustrative example. Simulation results demonstrate the considerable performance of the suggested technique.
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March 2016
Research-Article
A Novel Global Sliding Mode Control Based on Exponential Reaching Law for a Class of Underactuated Systems With External Disturbances
Saleh Mobayen
Saleh Mobayen
Department of Electrical Engineering,
Faculty of Engineering,
University of Zanjan,
P.O. Box 38791-45371,
Zanjan 38791-45371, Iran
e-mail: mobayen@znu.ac.ir
Faculty of Engineering,
University of Zanjan,
P.O. Box 38791-45371,
Zanjan 38791-45371, Iran
e-mail: mobayen@znu.ac.ir
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Saleh Mobayen
Department of Electrical Engineering,
Faculty of Engineering,
University of Zanjan,
P.O. Box 38791-45371,
Zanjan 38791-45371, Iran
e-mail: mobayen@znu.ac.ir
Faculty of Engineering,
University of Zanjan,
P.O. Box 38791-45371,
Zanjan 38791-45371, Iran
e-mail: mobayen@znu.ac.ir
1Corresponding author.
Contributed by the Design Engineering Division of ASME for publication in the JOURNAL OF COMPUTATIONAL AND NONLINEAR DYNAMICS. Manuscript received May 8, 2015; final manuscript received July 7, 2015; published online August 26, 2015. Assoc. Editor: Haiyan Hu.
J. Comput. Nonlinear Dynam. Mar 2016, 11(2): 021011 (9 pages)
Published Online: August 26, 2015
Article history
Received:
May 8, 2015
Revision Received:
July 7, 2015
Citation
Mobayen, S. (August 26, 2015). "A Novel Global Sliding Mode Control Based on Exponential Reaching Law for a Class of Underactuated Systems With External Disturbances." ASME. J. Comput. Nonlinear Dynam. March 2016; 11(2): 021011. https://doi.org/10.1115/1.4031087
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