Quantized H∞ Control for Networked Control Systems with Packet Dropouts

By the insertion of a limited communication network in the feedback control loop, this paper investigates the quantized H-infinity control problem for discrete-time systems with random packet losses. An improved quantized random packet-loss model is proposed and exploited to study the relationship among the packet-loss rate, the upper bound of consecutive packet losses, the quantization and the system performance. A quantized H-infinity control design strategy is proposed to guarantee the closed-loop system exponentially mean-square stable and also achieve a prescribed H-infinity disturbance attenuation level. A numerical example is given to illustrate the effectiveness and the significance of the proposed control method.