Energy harvesting using a magnetostrictive transducer based on switching control

An Li, Keiju Goto, Yuusuke Kobayashi, Yushin Hara, Yu Jia, Yu Shi, Constantinos Soutis, Hiroki Kurita, Fumio Narita, Keisuke Otsuka, Kanjuro Makihara

Research output: Contribution to journalArticlepeer-review


In this work, a switching control energy harvesting method using magnetostrictive materials is proposed. By combining a magnetostrictive material, an electric circuit, and an electronic switch, large-scale kinetic to electrical energy conversion can be achieved. The magnetostrictive material, magnet bias, and coils constitute an energy transducer, called a magnetostrictive transducer. The electronic switch strategically controls the switching of the circuit state according to an input switching signal. Using numerical simulations, we optimised the parameters and validated the harvesting performance with experimental measurements using a 3.75 m vibrated cantilever truss structure. In 20.0 s, the proposed method achieved an electrical energy of approximately 45 μJ, which is seven times more than that of the conventional passive method.
Original languageEnglish
Article number114303
Number of pages12
JournalSensors and Actuators A: Physical
Early online date14 Mar 2023
Publication statusPublished - 1 Jun 2023

Bibliographical note

Copyright © 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (


  • Magnetostrictive material
  • Energy harvesting
  • Switching control


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