Stabilization of discrete system zeros: An improved design

摘要

Stabilization of discrete system zeros has been previously achieved by providing a fixed pattern of inter-sampling time input which deviates from zero-order-hold. However, a fixed non-ZOH input creates several problems: indefinite fluctuation of the system output which causes a deterioration in performance, highly fluctuating input which accelerates actuator fatigue, and counter-acting control which increases demand for input energy. In this work, zero placement is achieved with a temporary non-ZOH input. This temporary input pattern, which converges asymptotically toward a ZOH input pattern, removes the problems associated with a fixed non-ZOH input design. [References: 11]