周波数向上変換アプローチによる超低周波慣性振動エネルギーハーベスターの研究
Jun Chen1, Jieliang Xu1, Mingjie Guan1
1School of Mechanical and Automotive Engineering, Xiamen University of Technology, Xiamen 361024, China.
Micromachines
|August 28, 2025
まとめ
この研究は,周波数向上のための磁気抽出を用いたピエゾ電気的エネルギー集集システムを示しています. この新しい設計は,超低周波の振動を効率的に収集し,シミュレートされた状態と水中の流れの両方で大きな出力を達成します.
科学分野:
- エネルギー収集
- 材料科学
- 機械工学
背景:
- 超低周波の振動は 効率的なエネルギー収集に 課題を伴います
- ピエゾ電気的エネルギーハーベスターは,通常,最適な性能のためにより高い周波数を必要とします.
- 振動エネルギー収集システムにおける周波数アップ変換の方法である.
研究 の 目的:
- 超低周波の振動のためのピエゾ電気的エネルギー収集システムの設計と分析.
- マグネティック・プーキング・メカニズムを使って 周波数向上変換を実現する.
- 水中の流れを含む様々な興奮条件下でのシステムの性能を評価する.
主な方法:
- 振動をピエゾ電気カンチレバービームに転送するための磁気抽出によるスプリング・マス・システムの開発
- 磁気力と潜在エネルギーの分析のための理論モデルを確立する.
- シヌソイド刺激と低速度水流の下での数値シミュレーションと実験的検証.
主要な成果:
- このシステムは1Hzの振動で高周波変換を成功させた.
- 最大出力 57.35 μW を磁気距離 15 mm で記録した.
- 低速の水流 (0.371 m/s) で23.73 μWの出力を達成し,最適な抵抗は250 kΩであった.
結論:
- 提案されている磁気抽出によるピエゾ電気的エネルギー収集システムは,超低周波の振動に対して有効です.
- 設計は,特に低速の水環境で,フロー誘発の振動でエネルギー収集に適していることを示しています.
- 磁気剥離メカニズムは,周囲の振動から使用可能な電力を生成するシステムの能力を高めます.
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