Yongyong Cao , Yuqiao Zheng , Xutao Mei , Fugang Dong , Rong Xu , Chenglong Shi , Pengcheng Zhang , Kongyuan Wei , Yabing Li
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引用次数: 0
摘要
传统收割机的一个重要问题是输出性能仅限于小应变和窄带宽。为解决这些问题，我们设计了一种带有动态放大器的新型 E 形收割机，以放大基底振动并增强低频复杂环境中的电能。本研究考虑了 E 型结构的特点，建立了新型机电耦合动态模型。同时，给出了所建模型的特征函数和共振频率的解析表达式。研究并讨论了系统参数对功率输出的影响。结果表明，通过合理设计结构参数，可以显著提高电能，并放大振动幅度。所提出的带有动态放大器的收割机是在目标工作频率附近增强能量收集的一种简单而有效的方法。
Modelling and analysis of a novel E-shape piezoelectric vibration energy harvester with dynamic magnifier
An important issue in conventional harvesters is that the output performance is limited to small strains and narrow bandwidth. To address these issues, a novel E-shape harvester with dynamic magnifier is devised to magnify the base vibration and enhance electric energy in low-frequency complicated environment. In this study, a novel electromechanical coupling dynamic model is established by considering the characteristics of the E-shape structure. Meanwhile, the analytical expressions of the eigenfunction and resonance frequency of the developed model are presented. The effect of system parameters on the power output are investigated and discussed. Results indicate that the electric energy can be significantly enhanced and the vibration amplitude can be magnified using properly design structural parameters. The proposed harvester with dynamic magnifier is a simple and effective approach for enhancing energy harvesting near a target operating frequency.
期刊介绍：
Mechanics Research Communications publishes, as rapidly as possible, peer-reviewed manuscripts of high standards but restricted length. It aims to provide:
• a fast means of communication
• an exchange of ideas among workers in mechanics
• an effective method of bringing new results quickly to the public
• an informal vehicle for the discussion
• of ideas that may still be in the formative stages
The field of Mechanics will be understood to encompass the behavior of continua, fluids, solids, particles and their mixtures. Submissions must contain a strong, novel contribution to the field of mechanics, and ideally should be focused on current issues in the field involving theoretical, experimental and/or applied research, preferably within the broad expertise encompassed by the Board of Associate Editors. Deviations from these areas should be discussed in advance with the Editor-in-Chief.
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