Experimental Study of a Two-Degree-Of-Freedom Piezoelectric Cantilever with a Stopper for Broadband

• DOI: 10.2139/ssrn.4101005
• Publication Date: 2022-05-08T12:45:06Z
• Authors: Nan Shao; Jiawen Xu; Xiaosu Xu
• Keywords: Degree (music)

This paper presents a two-degree-of-freedom (2-DOF) piezoelectric energy harvesting (PEH) system with stopper for wideband operation. The proposed consists of folded cantilever integrated. Two cases are considered where the is placed at free end outer beam and inner beam, respectively. It shown experimentally that proper parametric combination we can move anti-resonance point outside two resonant peaks widen frequency responses both peaks. Large amplitude voltage output over 11 Hz be obtained when focused on dynamics beam. In addition, it demonstrated arranging yields better performance than Detailed studies performed to investigate influences distance, base movement, sweep directions output. A maximum power 713 μW obtained.