Harvesting Mechanical Energy From Low Frequency Ambient Vibrations of Civil Infrastructural Systems Using Nonlinear Oscillators

这项拟议的研究旨在为土木工程结构中的传感器应用开发一种能量收集系统并建立其原型。这将为传感器在民用结构中的应用提供一个有效和高效的解决方案。一种创新的振动能量采集方法将被开发和实施，并采用新颖的设备结构。提出了一种非线性摆式结构，它将采用参数共振和非线性能量传递。该装置的原型预计将在各种条件下提供高水平的电力输出，将在实验室和夏威夷选定的公路桥上进行制造和测试。与其他工程领域的进展一起，这项研究将有助于为开发真正自主和自我维持的结构健康监测系统奠定坚实的基础。该提案解决了一个非常重要的问题--为无线传感器供电的能量收集装置。拟议的研究计划还将加强夏威夷大学马诺阿分校的教育和外联活动，该大学作为一所少数族裔机构处于独特的地位，其学生群体由具有夏威夷原住民种族背景的代表不足的群体代表。

The proposed research seeks to develop and prototype an energy harvesting for sensor applications in civil engineering structures. An effective and efficient solution will be provided to the energy harvesting problem in sensor applications to civil structures. A innovative method for vibration energy harvesting will be developed and implemented with novel device architecture. A non-linear pendulum-type architecture is proposed that will employ parametric resonance and nonlinear energy transfer. Prototypes of the proposed device, which is exp3ected to provide a high lever of electric output power under various conditions will be fabricated and tested both in laboratory and on selected highway bridges in Hawaii. Together with advances in other engineering fields, this research will help establish a solid foundation for developing truly autonomous and self sustained structural health monitoring systems. The proposal addresses a very important problem - energy harvesting device to power wireless sensor. The proposed research program will also enhance education and outreach activities of University of Hawaii at Manoa, which is in a unique position as a minority institution with its student body represented by underrepresented groups with native Hawaiian ethnic backgrounds.