H∞ Control for Discrete-Time Interconnected Large-Scale Systems With Round-Robin Scheduling Protocol

This paper explores the H
∞
control issue for discrete-time interconnected large-scale systems based on Round-Robin scheduling protocol. Round-Robin scheduling protocol is used to eliminate overload conditions in the sensor-to-controller network. For difficulties with more systems, the matrices of subsystems are widened to facilitate processing and the decentralized control mechanism is selected to enhance system stability. Minimal upper bound on the cost function is found by the expectation and perfect square method. In addition, the desired gain matrices of a certain structure with elements only on the diagonal are obtained by means of the Riccati equations and an optimization issue. Finally, the proposed scheme is verified by a numerical example of continuous stirred-tank reactor systems.