Network-based H∞ output tracking control for systems with time-varying bounded delay

This paper concerns with the network-based H_∞ output tracking of STT missiles. Based on decentralized control theory, the missile model is divided into three subsystems, and decentralized H_∞ output tracking controller is proposed for system with time varying delay. The network induced delay is assumed to have both the upper bound and the lower bound, which is more general compared with only considering the upper bound. The linear matrix inequality (LMI)-based procedure is adopted to design a state-feedback decentralized controller, which guarantees that the output of close-loop system tracks the output of a given reference model well in H_∞ sense. The controller is used on a STT missile, and the simulation result shows the usefulness and effectiveness of the proposed control approach.