Structural vibration control by synchronized switch damping energy transfer

Abstract

The synchronized switch damping (SSD) technique has been demonstrated as an efficient means of suppressing structure vibrations. This paper presents a novel SSD technique based on an energy transfer (SSDET) scheme that transmits energy from an energy-source structure to a target structure in order to damp the latter. As a matter of fact, the transferred energy enhanced the synchronized switch damping on inductor (SSDI) with an initial current, thus leading to a better vibration control capability. The experiment, performed on a beam/plate system, succeeded in delivering an enhanced damping effect as compared to the SSDI technique by adopting the proposed control law. Comparisons between simulation and experiment also confirmed the effectiveness of the proposed mathematical model. The stability was discussed in order to determine the stability limit.