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A fast converging robust controller using adaptive second order sliding mode

delete2012-11-01
delete45
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S
Sanjoy Mondal *
C
Chitralekha Mahanta
DOI:10.1016/j.isatra.2012.07.006delete
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摘要

摘要

En 中文
This paper proposes an adaptive second order sliding mode (SOSM) controller with a nonlinear sliding surface. The nonlinear sliding surface consists of a gain matrix having a variable damping ratio. Initially the sliding surface uses a low value of damping ratio to get a quick system response. As the closed loop system approaches the desired reference, the value of the damping ratio gets increased with an aim to reducing the overshoot and the settling time. The time derivative of the control signal is used to design the controller. The actual control input obtained by integrating the derivative control signal is smooth and chattering free. The adaptive tuning law used by the proposed controller eliminates the need of prior knowledge about the upper bound of system uncertainties. Simulation results demonstrate the effectiveness of the proposed control strategy. (c) 2012 ISA. Published by Elsevier Ltd. All rights reserved.
Keyword:
Second order sliding mode control
Composite nonlinear feedback
Adaptive tuning
Uncertain system
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ISA Transactions 封面图
ISA Transactions
IF:
6.5
论文数:
6.0K
被引数:
2.0W

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indian institute of technology system (iit system)
学者数:
9.5W
论文数: 9.9W
被引数: 93
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