Title :
A MEMS-based wideband piezoelectric energy harvester system using mechanical stoppers
Author :
Liu, Huicong ; Lee, Chengkuo ; Kobayashi, Takeshi ; Tay, Cho Jui ; Quan, Chenggen
Author_Institution :
Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore, Singapore
Abstract :
A piezoelectric MEMS energy harvester (EH) system with top- and bottom-stoppers can response to vibrations with frequency ranging from 30 Hz to 48 Hz when the top- and bottom-stopper distances are 0.75 mm and 1.1 mm, respectively, and the acceleration of vibration is 0.6 g. By adjusting the stopper distance, the operating bandwidth is broadened from the initial mechanical resonance of the PZT EH cantilever at 36Hz to various extent. Larger acceleration of vibration also leads to wider operating bandwidth.
Keywords :
energy harvesting; micromechanical devices; piezoelectric transducers; EH; MEMS-based wideband piezoelectric energy harvester system; PZT EH cantilever; distance 0.75 mm to 1.1 mm; frequency 30 Hz to 48 Hz; mechanical stoppers; vibration; Acceleration; Bandwidth; Metals; Micromechanical devices; Power generation; Resonant frequency; Vibrations;
Conference_Titel :
Electron Devices Meeting (IEDM), 2011 IEEE International
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4577-0506-9
Electronic_ISBN :
0163-1918
DOI :
10.1109/IEDM.2011.6131640
