H∞ Network-Servo Tracking Control

This paper studies the problems of H-infinity 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-infinity sense. Numerical examples show the effectiveness of the proposed method.