Decentralised output feedback control for nonlinear interconnected systems with time delay interconnections and disturbances

Nonlinear time varying delay interconnected systems with nonlinear isolated nominal subsystems and nonlinear time delay interconnections, are considered in this paper. Both matched and mismatched disturbances are nonlinear and time-delayed. A discontinuous decentralised static output feedback control strategy is proposed to stabilise the interconnected systems uniformly asymptotically. A novel approach is proposed to deal with the interconnections by introducing artificial interconnections, such that the accessible information is fully exploited in the control design to reduce the conservatism. Simulation results show the effectiveness of the approach.