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Development of a Metal-Cantilever Electrostatic Vibration Power Generator Combined With Potassium Ion Electret Technique

[+] Author Affiliations
Hideaki Koga, Hiroyuki Mitsuya

Saginomiya Seisakusho, Inc., Sayama, Japan

Yuji Toyama, Tatsuhiko Sugiyama, Gen Hashiguchi

Shizuoka University, Hamamatsu, Japan

Hiroshi Toshiyoshi

University of Tokyo, Tokyo, Japan

Paper No. ISPS-MIPE2018-8529, pp. V001T08A003; 3 pages
doi:10.1115/ISPS-MIPE2018-8529
From:
  • ASME-JSME 2018 Joint International Conference on Information Storage and Processing Systems and Micromechatronics for Information and Precision Equipment
  • ASME-JSME 2018 Joint International Conference on Information Storage and Processing Systems and Micromechatronics for Information and Precision Equipment
  • San Francisco, California, USA, August 29–30, 2018
  • Conference Sponsors: Information Storage and Processing Systems Division
  • ISBN: 978-0-7918-5193-7
  • Copyright © 2018 by ASME

abstract

We have developed a metal-cantilever electrostatic vibration power generator that has comb-drive electrodes made of a SOI wafer at the tip of the cantilever. The comb-drive electrodes in which built-in electric field is given by potassium ion electret technique acts as an energy transducer from mechanical vibration power to electrical one. The metal cantilever part is formed separately, and assembled with the comb-electrodes on a bakelite plastic. This device showed strong nonlinear frequency responses, in which spring hardening was observed when applied acceleration was small while spring softening when high acceleration. About 30μW output power was observed at 0.03GRMS acceleration, and the maximum 90% conversion efficiency achieved at 0.01GRMS acceleration.

Copyright © 2018 by ASME

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