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A new sliding-mode control with fuzzy boundary layer. (English) Zbl 0988.93045
Fuzzy rules, which reduce the number of fuzzy inputs, are introduced to regulate the design parameters and increase operating performance. A sliding-mode controller based on fuzzy variable boundary layer with a control gain and boundary layer thickness as design parameters is developed. The control gain is an important factor affecting the control performance of variable structure system (VSS). Sliding-mode controllers based on a variable boundary layer are superior to the fixed-layer method for tracking. In order to regulate the design parameters and increase operating efficiency, the proposed methodologies make use of fuzzy inference, which reduces the number of fuzzy inputs. By using fuzzy algorithms in choosing a control gain and boundary layer, methods with better tracking performance than the conventional method are proposed. Finally, the results of a simulation are given to demonstrate the validity of this algorithm.
93C42Fuzzy control systems