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A new approach to adaptive fuzzy control: the controller output error method

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3 Author(s)
Andersen, H.C. ; Dept. of Electr. & Comput. Eng., Queensland Univ., Brisbane, Qld., Australia ; Lotfi, A. ; Tsoi, A.C.

The controller output error method (COEM) is introduced and applied to the design of adaptive fuzzy control systems. The method employs a gradient descent algorithm to minimize a cost function which is based on the error at the controller output. This contrasts with more conventional methods which use the error at the plant output. The cost function is minimized by adapting some or all of the parameters of the fuzzy controller. The proposed adaptive fuzzy controller is applied to the adaptive control of a nonlinear plant and is shown to be capable of providing good overall system performance

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Systems, Man, and Cybernetics, Part B: Cybernetics, IEEE Transactions on  (Volume:27 ,  Issue: 4 )