Design of new fuzzy sliding mode controller based on parallel distributed compensation controller and using the scalar sign function. (English) Zbl 1540.93060
Summary: This paper presents a new design of fuzzy sliding mode controller based on parallel distributed compensation and using a scalar sign function. The proposed fuzzy sliding mode controller (FSMC) uses the parallel distributed compensation (PDC) scheme to design the state feedback control law. The controller gains are determined in offline mode via linear quadratic regulator technique. Moreover, the fuzzy sliding surface of the system is designed using stable eigenvectors and the scalar sign function in order to overcome the discontinuous switching. This later is obtained by a sign function of the standard FSMC. The advantages of the proposed design are a minimum energy control effort, faster response and zero steady-state error. Finally, the validity of the proposed design strategy is demonstrated through the simulation of a flexible joint robot.
Keywords:
Takagi-Sugeno fuzzy model; sliding mode control; parallel distributed compensation; linear quadratic regulator; scalar sign functionReferences:
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