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Chattering reduction of sliding mode control by low‐pass filtering the control signal
Author(s) -
Tseng MingLei,
Chen MinShin
Publication year - 2010
Publication title -
asian journal of control
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.769
H-Index - 53
eISSN - 1934-6093
pISSN - 1561-8625
DOI - 10.1002/asjc.195
Subject(s) - control theory (sociology) , sliding mode control , reduction (mathematics) , signal (programming language) , estimator , noise reduction , noise (video) , variable structure control , mode (computer interface) , boundary (topology) , boundary layer , engineering , computer science , control (management) , control engineering , mathematics , artificial intelligence , nonlinear system , physics , geometry , mathematical analysis , statistics , quantum mechanics , image (mathematics) , programming language , aerospace engineering , operating system
Abstract The conventional approach to reducing control signal chattering in sliding mode control is to use the boundary layer design. However, when there is high‐level measurement noise, the boundary layer design becomes ineffective in chattering reduction. This paper, therefore, proposes a new design for chattering reduction by low‐pass filtering the control signal. The new design is non‐trivial since it requires estimation of the sliding variable via a disturbance estimator. The new sliding mode control has the same performance as the boundary layer design in noise‐free environments, and outperforms the boundary layer design in noisy environments. Copyright © 2010 John Wiley and Sons Asia Pte Ltd and Chinese Automatic Control Society