Development and experimental verification of tuned inertial mass electromagnetic transducers

• Project/Area Number: 17H04942
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Building structures/Materials
• Research Institution: University of Tsukuba
• Principal Investigator: Asai Takehiko 筑波大学, システム情報系, 准教授 (90775793)
• Project Period (FY): 2017-04-01 – 2020-03-31
• Project Status: Completed (Fiscal Year 2021)
• Budget Amount: ¥21,450,000 (Direct Cost: ¥16,500,000、Indirect Cost: ¥4,950,000); Fiscal Year 2019: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000); Fiscal Year 2018: ¥9,100,000 (Direct Cost: ¥7,000,000、Indirect Cost: ¥2,100,000); Fiscal Year 2017: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
• Keywords: 同調回転慣性質量トランスデューサー / 振動制御 / 制振 / エネルギーハーベスティング / 制振装置 / 同調回転慣性質量機構 / トランスデューサー / 構造制御 / 同調回転慣性質量効果

Outline of Final Research Achievements

We developed tuned inertial mass electromagnetic transducers (TIMETs) consisting of a rotational inertial mass, which can produce amplified mass effect, and a tuning spring. The TIMET can convert vibration energy to electrical energy effectively by taking advantage of the resonance effect. The effectiveness of the TIMET was verified through numerical simulation studies and experiments. Moreover, we developed a variable rotational mass mechanism which makes the device effective in wider frequency range.

Academic Significance and Societal Importance of the Research Achievements

本研究では、外乱を受けて振動する構造物の振動エネルギーを吸収して、電気エネルギーへと高効率に変換することが出来る装置の開発を行った。本装置の応用先としては、例えば地震動を受けて振動する構造物の振動を抑制する制振装置や、海洋波により振動する浮体から発電を行う波力発電装置が挙げられる。このように、本研究により、防災だけでなく、エネルギーハーベスティング装置として新たな再生可能エネルギー源の創出にも貢献出来る成果を得ることが出来た。

Research Products

• [Journal Article] Development and performance evaluation of an electromagnetic transducer with a tuned variable inerter (2022)
  • Author(s): Takino Minoru、Asai Takehiko
  • Journal Title: Journal of Vibration and Control Volume: - Issue: 9-10 Pages: 2035-2048
  • DOI: 10.1177/10775463221074078
  • Peer Reviewed
• [Journal Article] Experimental characterization and performance improvement evaluation of an electromagnetic transducer utilizing a tuned inerter (2019)
  • Author(s): Sugiura Keita、Watanabe Yuta、Asai Takehiko、Araki Yoshikazu、Ikago Kohju
  • Journal Title: Journal of Vibration and Control Volume: 26 Issue: 1-2 Pages: 56-72
  • DOI: 10.1177/1077546319876396
  • NAID: 120007127854
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Outrigger tuned inertial mass electromagnetic transducers for high-rise buildings subject to long period earthquakes (2017)
  • Author(s): Asai Takehiko、Watanabe Yuta
  • Journal Title: Engineering Structures Volume: 153 Pages: 404-410
  • DOI: 10.1016/j.engstruct.2017.10.040
  • NAID: 120007134568
  • Peer Reviewed
• [Journal Article] Structural control with tuned inertial mass electromagnetic transducers (2017)
  • Author(s): Asai Takehiko、Araki Yoshikazu、Ikago Kohju
  • Journal Title: Structural Control and Health Monitoring Volume: 25 Issue: 2 Pages: e2059-e2059
  • DOI: 10.1002/stc.2059
  • NAID: 120007127853
  • Peer Reviewed
• [Presentation] 同調回転慣性質量トランスデューサーを用いた自己発電型制振システムの実現可能性の検討 (2021)
  • Author(s): 武富祐樹
  • Organizer: Dynamics and Design Conference 2021
• [Presentation] モデル予測制御による同調回転慣性質量トランスデューサーの最適制御 (2021)
  • Author(s): 浅井健彦
  • Organizer: 第 17 回「運動と振動の制御」シンポジウム (MoViC2021)
• [Presentation] Experimental verification of a tuned inertial mass electromagnetic transducer (2018)
  • Author(s): Keita Sugiura
  • Organizer: SPIE Active and Passive Smart Structures and Integrated Systems XII
  • Int'l Joint Research
• [Presentation] アウトリガー同調慣性質量トランスデューサーの振動制御性能と発電効率 (2017)
  • Author(s): 渡辺悠太
  • Organizer: 日本建築学会大会