H-INFINITY LOOP TRANSFER RECOVERY SYNTHESIS OF DISCRETE-TIME-SYSTEMS

This paper addresses an H-infinity disturbance attenuation problem of discrete-time systems, and presents a new discrete-time H-infinity loo p transfer recovery (LTR) synthesis method. The method involves two de sign steps. First, an H-infinity state-feedback controller is designed to satisfy the design specifications, such as stability robustness an d disturbance attenuation. Subsequently, the properties of the H-infin ity state-feedback are reobtained by designing full/minimal order obse rvers. A numerical examples is included to illustrate the presented me thod. (C) 1998 John Wiley & Sons, Ltd.