Titel

5-DOF Active Vibration Control with a Piezoceramic Driven Multifunctional Interface for High Load Application

Autoren

Wimmel, R.; Fehren, H.; Gnauert, U.; Breitbach, E.

Veranstaltung

ICAST. Key West, 1996.

Abstract

In many applications there is a need for multifunctional interface elements which have the task of reducing vibra-tions or isolating structures from vibrations and simultaneously withstanding high static loads. Piezoceramics are known as a class of material having high compressive strengt but very low tensile and shear strength. Therefore, piezoceramics cannot be used in the same manner as conventional construction materials are used. New design principles are necessary to apply piezoceramics on technical structures.

This paper presents a 5 DOF multifunctional active interface on the basis of piezoceramics despite of high transver-sal and shear loads. In the 5 DOF vibration control system, it is necessary to control multiple external disturbances by means of the interface at the same time. Thus efficient MIMO control system design methods are required. A comparison of different control concepts including feedback and adaptive approaches are given. The capability of such new multifunctional interface elements in vibration reduction, vibration isolation or for system identification opens a wide variety of possible applications in all technical areas.