State feedback H-infinity controller design for fuzzy dynamic systems

This paper presents robust H-infinity controller design for fuzzy dynamic s ystems with state feedback. Three kinds of controller design methods are pr oposed based on a quadratic Lyapunov function or a piecewise smooth quadrat ic Lyapunov function. The control laws are numerically tractable by using L MI techniques and the global stability with disturbance attenuation of the closed-loop fuzzy control system is established. An example is given to ill ustrate the application of the proposed method.