Passivity analysis for uncertain discrete switched systems with interval time-varying delay

The passivity analysis and switching signal design for uncertain discrete switched systems with interval time-varying delay and linear fractional perturbations is considered in this paper. Some LMI criteria are proposed to design the switching signal to guarantee the passivity of discrete switched time-delay system. Some nonnegative inequalities are introduced to reduce the conservativeness of the proposed conditions. Finally, a numerical example is illustrated to show the main proposed result.