Relay Control for a Vibration Isolator Using the Theory of Variable Structure Systems

Abstract

A new relay controller design of vibration isolators is presented from the viewpoint of the properties of the sliding mode. The sliding mode control system remains insensitive to a class of disturbance and parameter variations. The design of a relay controller which induces the sliding mode does not require accurate knowledge of the disturbance or of the system parameters; it is sufficient to know only those limits. The versatility of the variable structure system control encourages its adaption for vibration isolator control problems. In hybrid simulation and experimental studies, the isolation effect of the active isolator system is proven. © 1991, The Japan Society of Mechanical Engineers. All rights reserved.