114 Development of a Highly Accurate Rigid Body Property Identification System

Abstract

This article proposes a new experimental procedure that achieves accurate measurements of rigid body properties in approximately 60 seconds. The experimenter intervenes only in placing the test structure onto a softly suspended platform. The platform is equipped with simple unbalance actuators, which simultaneously excite the structure, and with accelerometers, which measure the vibration response. The rigid body properties of a given test structure can be determined by fitting a theoretical model of the acceleration response to the measured response data.