A semi-passive vibration damping system powered by harvested energy

作者：Shen Hui; Ji Hongli; Qiu Jinhao^*; Zhu Kongjun

来源：International Journal of Applied Electromagnetics and Mechanics, 2009, 31(4): 219-233.

DOI：10.3233/JAE-2009-1059

• Piezoelectric devices
• structural damping
• semi-passive damping
• energy harvesting

This paper designs and investigates a vibration damping system powered by harvested energy with the implement of the so-called SSD (Synchronized Switch Damping) technique, which is a semi-passive approach. In the semi-passive approach, the piezoelectric element is switched from open circuit to closed circuit synchronously with the structure motion. Due to this switching procedure, a phase shift induced between the strain of vibration and the resulting voltage, thus creating energy dissipation. A low-power version of the switching circuit for nonlinear processing of voltage has been designed, and by combining the switching circuit with an energy harvesting subsystem, a semi-passive vibration damping system without external power supply has been successfully developed. Its effectiveness in the single-mode resonant damping of a composite beam is validated by the experimental results.

• 出版日期2009
• 单位南京航空航天大学