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Intelligent complementary sliding-mode control with dead-zone parameter modification
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DOI：10.1016/j.asoc.2014.06.008.png)
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Abstract
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This paper proposes an intelligent complementary sliding-mode control (ICSMC) system which is composed of a computed controller and a robust controller. The computed controller includes a neural dynamics estimator and the robust compensator is designed to prove a finite L-2-gain property. The neural dynamics estimator uses a recurrent neural fuzzy inference network (RNFIN) to approximate the unknown system term in the sense of the Lyapunov function. In traditional neural network learning process, an over-trained neural network would force the parameters to drift and the system may become unstable eventually. To resolve this problem, a dead-zone parameter modification is proposed for the parameter tuning process to stop when tracking performance index is smaller than performance threshold. To investigate the capabilities of the proposed ICSMC approach, the ICSMC system is applied to a one-link robotic manipulator and a DC motor driver. The simulation and experimental results show that favorable control performance can be achieved in the sense of the L-2-gain robust control approach by the proposed ICSMC scheme. (C) 2014 Elsevier B.V. All rights reserved.
Keywords:
Neural control
Sliding-mode control
Neural fuzzy inference network
Recurrent neural network
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