An LMI-Based H_∞ Control Approach for Networked Control Systems with Deadband Scheduling Scheme

摘要

Due to the bandwidth constraints in the networked control systems (NCSs), a deadband scheduling strategy is proposed to reduce the data transmission rate of network nodes. A discrete-time model of NCSs is established with both deadband scheduling and network-induced time-delay. By employing the Lyapunov functional and LMI approach, a state feedback H-infinity controller is designed to ensure the closed-loop system asymptotically to be stable with H-infinity performance index. Simulation results show that the introduced deadband scheduling strategy can ensure the control performance of the system and effectively reduce the node's data transmission rate.