New delay-dependent stability criteria for T-S fuzzy systems with interval delay

This paper provides a new delay-dependent stability criteria for Takagi-Sugeno(T-S) fuzzy systems with interval delay. With a novel Lyapunov functional defined, a tighter upper bound of its derivatives are given. This functional leads to simplified and has advantages over some previous one in that it involves fewer matrix variables but has less conservatism. Finally, numerical examples show the resulting criteria outperform all existing ones in the literature.