Fast-rate Output Feedback Control with Adaptive Output Estimator for Non-uniformly Sampled Multirate Systems

Abstract

AbstractThis paper deals with a design problem of an adaptive output estimator for non-uniformly sampled multirate systems with a fast uniform input updating rate and slow non-uniform output sampling rates. An adaptive output estimator will be proposed so as to realize a fast-rate output feedback control for mom-uniformly sampled system at the fast sampling period of the input updating rate. The proposed adaptive output estimator is designed by using only measured outputs of slow rate samplings and fast rate updating input, and then the estimator has relatively simple structure. We can design a fast rate output feedback control system by using estimated outputs even if the output sampling rate is slow. We also analyze the stability of the obtained fast rate output feedback control system based on ASPR properties of the controlled system.