“…By incorporating with sliding-mode control, Lin and Hsu have proposed the adaptive fuzzy sliding-mode control system (Lin & Hsu, 2002, 2003a. Based on the same idea, Hung and Chung presented the self-tuning fuzzy sliding mode control and adaptive neural network-based sliding-mode control for nonlinear systems (Hung, Lin, & Chung, 2007a, 2007b. Moreover, a number of investigators have proposed the adaptive neural network control techniques for SISO nonlinear plants with unknown nonlinear function (Leu, Lee, & Wang, 1997;Wang, Lin, Lee, & Liu, 2002;Wang, Chan, Hsu, & Lee, 2002).…”