Variable structure control of nonlinear system using fuzzy variable boundary layer

We suggest a variable structure controller based on a fuzzy variable boundary layer with control gain and boundary layer thickness as design parameters. Control gain is an important factor affecting the control performance of the variable structure system (VSS). The sliding mode controller based on...

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Bibliographic Details
Main Authors: Heejin Lee, Hongyoup Son, Euntai Kim, Mignon Park
Format: Conference Proceeding
Language:English
Subjects:
Control systems
Fuzzy control
Fuzzy systems
Inference algorithms
Nonlinear control systems
Nonlinear systems
Performance gain
Sliding mode control
Thickness control
Variable structure systems
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Description
Summary:We suggest a variable structure controller based on a fuzzy variable boundary layer with control gain and boundary layer thickness as design parameters. Control gain is an important factor affecting the control performance of the variable structure system (VSS). The sliding mode controller based on a variable boundary layer is superior to the fixed-layer method for tracking characteristics. In order to regulate the design parameters and increase the operating efficiency, the scheme makes use of a fuzzy inference which reduces the number of fuzzy inputs. By using fuzzy algorithms in choosing control gain and boundary layer, we propose methods which have better tracking performance than the conventional method. To demonstrate the advantages of the proposed algorithm, it is applied to a nonlinear system.
ISSN:1098-7584
DOI:10.1109/FUZZY.1998.687510