Improved result for fuzzy systems with time invariant delay

It is shown in [20] that the HPMFD is an efficient method to deal with fuzzy system. In this paper, we extend this method to fuzzy systems with time invariant delay. The matrices in the Lyapunov-Krasovskii functional are designed as HPMFD and the time derivative are also analyzed by applying a switching method. In the end, an example is presented to compare with other method and less conservative results can be obtained by increasing the degree of HPMFD matrices.