H∞ Infinity Network-Servo Tracking Control

This paper studies the problems of H_∞ tracking performance analysis and controller design for servo control systems using data networks. An augmented model of network servo system is established in consideration of network induced delay and data dropped conditions, and a linear matrix inequality (LMI)-based procedure is proposed for designing state-feedback controllers, which guarantee that the position signals tracks the output of a given reference model well in the H_∞ sense. Numerical examples show the effectiveness of the proposed method.