Journal
ISA TRANSACTIONS
Volume 97, Issue -, Pages 261-268Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.isatra.2019.08.010
Keywords
Sliding mode controller; Exponential reaching law; Chattering; Fast convergence; Robot manipulator; DC motor
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In this paper, a new sliding mode control (SMC) is applied to a physical nonlinear system. The novelty of this approach is related to the proposed reaching law by overcoming the main limitations of SMC. Unlike existing reaching laws, the suggested one can achieve high performance with significant reducing of a chattering problem and has a very fast convergence time of the system trajectories into the origin. This law benefits from the advantages and overcomes the limitations of both the exponential reaching law (ERL) and the conventional sliding mode control (SMC). Simulation results and comparison study with ERL and SMC are presented and applied on two degrees of freedom robot in order to show the advantage of the proposed adaptive reaching law. Experiments results are performed with electric cylinder (DC Motor) to confirm this proposition in real-time implementation. (C) 2019 ISA. Published by Elsevier Ltd. All rights reserved.
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