Paper:
Language: English:

Tracking Control of Variable Structure Using Fuzzy Variable Boundary Layer

Heejin Lee^, Dong-Yon Kim^*, Taeck-Kie Lee^**, Sang-Hoon Kim^, and Mignon Park^*

Intelligent Control and System Lab., Dept. of Electronic Engr., Yonsei University 134, Shinchon-dong, Sudaemun-ku, Seoul, 120-749, Korea
Dept. of Control and Instrumentation Engr., Hankyong National University
Dept. of Electronic Engr., Hankyong National University
****Dept. of Electrical Engr., Hankyong National University 67, Seokjeong-dong, Ansung, Kyonggi, 456-749, Korea

Received: April 16, 1997

Accepted: May 14, 1999

Keywords: Variable structure system, Fuzzy algorithms, Variable boundary layer

Journal ref: Journal of Advanced Computational Intelligence and Intelligent Informatics, Vol.3, No.4 pp. 332-338, 1999

Abstract

Control gain greatly affects variable structure system (VSS) performance as a system design parameter. The thin boundary layer used to eliminate chatter neighbors the sliding surface. Sliding control based on a variable boundary layer tracks better than a fixed layer. We propose variable structure control using fuzzy algorithms in control gain and the boundary layer to increase tracking efficiency, proving its feasibility in application to a simple nonlinear system.

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