[16a-D215-1~6] 16.2 Energy Harvesting

▼ [16a-D215-3] Utilization of coupled oscillation in 2DOF-MEMS piezoelectric vibration energy harvester for impulsive force

〇(D)Aphayvong Sengsavang¹, Shuichi Murakami², Norifumi Fujimura¹, Takeshi Yoshimura¹ (1.Osaka Metropolitan Univ., 2.ORIST)

Keywords:Piezoelectric vibration energy harvesting, Coupled oscillation, Impulsive force

Enhancing the output power of MEMS piezoelectric vibration energy harvester (MEMS-pVEH) from low-frequency and random ambient vibration is critical for expanding the range of applications. In our previous work, a dynamic magnifier (DM) was employed for MEMS-pVEH to construct a two-degree-of-freedom system (2DOF). It was found that the output energy for impulsive forces shows significant enhancement and low dependence on the width of the duration. While 2DOF-pVEH shows the coupled oscillation behavior in 2DOF-pVEH, its effect on the output characteristics had not been investigated. In this work, the utilization of the coupled oscillation is discussed.