A generic stable two-input single-output fuzzy control scheme for nonlinear systems

This paper presents a new approach to the design of a generic two-input-single-output (TISO) fuzzy logic controller for a class of uncertain nonlinear systems. Firstly, A new variable structure control scheme achieving uniform ultimate boundedness of the closed-loop system is established as a supervisory control for a generalized PD-type TISO fuzzy controller. The fuzzy controller is then constructed to obtain desirable dynamic responses when the trajectories are in its universe of discourse. To illustrate the effectiveness of the design, an example of robot effector system as well as a PC-based magnetic levitation system were taken as simulative and experimental examples.