A low-power circuit for piezoelectric vibration control by synchronized switching on voltage sources

TL;DR

This paper presents a low-power vibration damping circuit using the SSDV technique that enhances energy dissipation and control performance by harvesting and utilizing energy from piezoelectric elements, validated experimentally.

Contribution

A novel low-power SSDV-based device that improves vibration control efficiency by harvesting and using energy from piezoelectric materials.

Findings

Significant improvement in vibration damping performance.

Effective energy harvesting from piezoelectric elements.

Validated through experiments on a composite beam.

Abstract

In the paper, a vibration damping system powered by harvested energy with implementation of the so-called SSDV (synchronized switch damping on voltage source) technique is designed and investigated. In the semi-passive approach, the piezoelectric element is intermittently switched from open-circuit to specific impedance synchronously with the structural vibration. Due to this switching procedure, a phase difference appears between the strain induced by vibration and the resulting voltage, thus creating energy dissipation. By supplying the energy collected from the piezoelectric materials to the switching circuit, a new low-power device using the SSDV technique is proposed. Compared with the original self-powered SSDI (synchronized switch damping on inductor), such a device can significantly improve its performance of vibration control. Its effectiveness in the single-mode resonant damping of a composite beam is validated by the experimental results.