Fuzzy approximate disturbance decoupling of MIMO nonlinear systems by backstepping and application to chemical processes |
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Authors: | Bing Chen Xiaoping Liu |
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Affiliation: | Inst. of Complexity Sci., Qingdao Univ., China; |
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Abstract: | Fuzzy approximate disturbance decoupling concept is introduced for a class of multiple-input-multiple-output (MIMO) nonlinear systems with completely unknown nonlinearities. Based on backstepping technique, a fuzzy almost disturbance decoupling control scheme is proposed. The fuzzy controllers guarantee internal uniform ultimate boundedness of the closed-loop adaptive systems and render a bounded approximate L/sub 2/ gain from the disturbance input to the output. The developed design scheme is applied to control a two continuous stirred tank reactor process. The simulation results illustrate the effectiveness of the method proposed in this paper. |
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