Robust Observer-based H_∞ Control for Networked Control Systems with Measurement Quantization and Packet Dropouts

摘要

This paper investigates the problem of observer-based H_∞ control for networked control systems with both quantization and packet dropouts. It is assumed that the output signal is quantized by a static, memoryless and logarithmic quantizer before being communicated. Moreover, the random packet loss is assumed to obey the Bernoulli random binary distribution. Sufficient conditions for the existence of an observer-based controller are established to ensure the closed-loop system is stochastically stable with a guaranteed H_∞ performance. The controller parameters can be obtained by solving a set of linear matrix inequalities (LMIs). Finally, an example is provided to demonstrate the effectiveness of the proposed method.