This paper presents a sufficient condition for stability of a class of multiple input multiple output recurrent type-2 TSK fuzzy systems using spectrum analysis. In this class of type-2 TSK fuzzy systems, the antecedent part is interval Gaussian type-2 fuzzy sets and the consequent part is a linear combination of inputs with crisp coefficients. In the proposed method, at first a type-2 fuzzy model is built and then the stability of the model is analyzed. It should be noted that this method is suitable for strictly ascending and strictly decreasing systems. Two first-order systems and two second-order systems are simulated by type-2 and type-1 fuzzy systems. The simulation results show the effectiveness of the proposed method.
