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_∞ 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_∞ control design strategy is proposed to guarantee the closed-loop system exponentially mean-square stable and also achieve a prescribed H_∞ disturbance attenuation level. A numerical example is given to illustrate the effectiveness and the significance of the proposed control method.