Direct adaptive fuzzy decentralized control for a class of large-scale nonlinear systems

A direct adaptive output-feedback fuzzy control is designed to realize the decentralized control for a class of large-scale nonlinear systems. The direct adaptive fuzzy approach is employed for the primary control part aiming to maintain the closed-loop stability. The proposed controller has an auxiliary control structure, in the auxiliary part a sliding-mode controller is designed to cornpensate for the interactions among subsystems and a H ∞ controller is designed to attenuate the fuzzy approximation errors. The proposed controller can guarantee the stability of the closedloop and also achieve the H ∞ tracking performance.