Realization of a mechanical structure enabling power generation and vibration reduction via band engineering

通过带工程实现可发电和减振的机械结构

• 批准号: 21KK0252
• 负责人: 浅沼 春彦
• 金额: $ 9.9万
• 依托单位: Kanazawa University
• 依托单位国家: 日本
• 项目类别: Fund for the Promotion of Joint International Research (Fostering Joint International Research (A))
• 财政年份: 2022
• 资助国家: 日本
• 起止时间: 2022 至 2023
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21KK0252/
• 关键词: メタ構造; 振動発電; 連成解析; 周期構造; 圧電振動ハーベスタ; バンドエンジニアリング; ワイドバンドギャップ; 非線形回路

本研究では，構造上に圧電振動ハーベスタを周期配置したスマート発電メタ構造の基礎を構築するため，海外共同研究を実施した．提案構造は，半導体の周期構造と類似したバンドギャップを形成して，発電と振動抑制の両立を可能にする．本年度は機械系・電気系要素の物理モデルの構築とその連成解析手法の開発，１次元はり構造を基にした構造設計法の考案と実証を行った．研究を進めるにつれて申請時には想定できなかった技術課題が分かってきた．開発に時間を要したが，発電回路を含む電気系とメタ構造の機械系の連成解析法の構築に成功した．連成解析と１次元はり構造を用いた実験による検証から，同じサイズの振動ハーベスタを周期配置するメタ構造では発電分布に偏りが生じ，将来のIoTを用いた構造状態推定には適さない事が分かってきた．そこで，発電分布の偏りを低減する新たなメタ構造の開発に取り組み，発電分布の偏り低減とワイドバンドギャップ化を実証した．解析と実験は凡そ同じ傾向を示したが完全には一致しておらず，今後この原因の解明や精度向上に取り組む．また，振動発電で駆動する小型無線センサノードの開発に取り組み，構造振動の加速度波形データの送信に成功した．加速度のRMS値の1点データではなく，波形データを無線送信する事でAI解析との親和性を高める事が出来る．メタ構造上に無線センサノードを取り付け，構造の揺れの様子の観測に成功した．研究を進めるにつれて，無線センサノードの電気二重層コンデンサに蓄積されるエネルギと振動ハーベスタの生み出すエネルギにギャップが存在する事が分かってきた．次年度に，このメカニズムについての解明にも取り組む．

The purpose of this study is to improve the performance of the system, such as the configuration of the cycle, the configuration of the cycle, the establishment of the system, and the overseas joint study on the implementation of the track. the proposal is made, and the semi-rigid cycle model is similar to the one in which it is formed. It is possible that the vibration suppression system may be effective. This year, the key elements of the mechanical and electrical department of the mechanical and electrical department, such as physical engineering and engineering, have been linked to the analytical method, and the design of the basic engineering equipment, the design method, the design method, and the project have been reviewed. During the study, it is necessary to consider the technical and technical problems of the equipment and equipment during the period of application. The loop contains the electrical engineering system, the mechanical system, the mechanical system, the analytical method, the analytical method, the analysis method, the analysis The distribution is different from each other. In the future, the accuracy of the data acquisition system will be improved. In the future, the accuracy of the system will be improved. Vibrating a small number of wireless devices to start picking up the assembly, creating the acceleration waveform to send a message successfully. Acceleration RMS at 1: 00, sending a message without a line, AI parsing, AI parsing, and high-performance performance. In the course of the study, we have completed the research and development of the system. The study has been conducted in a non-linear manner, and the dual-tier computer system has been studied. There has been a significant increase in the number of people living in the hospital. In the next year, we will be able to understand how to get information about the database.