Collaborative Research: Nonlinear Design and Development of Multi Degree-of-freedom Broadband Energy Harvesting Systems

合作研究：多自由度宽带能量收集系统的非线性设计与开发

• 批准号: 1100722
• 负责人: Alexander Vakakis
• 金额: $ 21万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-06-01 至 2015-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1100722&HistoricalAwards=false
• 关键词: Collaborative; Research; Nonlinear; Design; Development

This project addresses the harvesting and conversion of mechanical energy from low-level ambient vibration into usable electrical energy. Utilizing the unique properties of "essentially" nonlinear vibrating systems, it develops multi degree-of-freedom, passive, broadband devices that will increase the efficiency and performance of energy harvesting systems acting on low-level ambient vibrations. Three research tasks are undertaken: 1) analysis of the system-level dynamics including nonlinearity in both the mechanical resonator and the electrical charging system; 2) design and application of multidegree-of-freedom resonators to enhance harvesting; and 3) experimental verification of proposed designs. Furthermore, collaboration with a group at the University of Bristol (UK) seeks to incorporate state of the art energy conversion strategies that can work efficiently in conjunction with the broadband resonator to produce a reliable, consistent source of power. The research is anticipated to lead to an enabling technology for next-generation portable devices and wireless sensors and provide a novel framework for the design and optimization of systems that incorporate nonlinear elements. Finally, this project enhances the diversity of the engineering community through targeted outreach, undergraduate research programs, and the support of students from underrepresented groups.

该项目致力于从低水平环境振动中收集机械能并将其转换为可用电能。利用“本质上”非线性振动系统的独特特性，它开发了多自由度、被动、宽带设备，这些设备将提高作用于低水平环境振动的能量收集系统的效率和性能。承担三项研究任务：1）系统级动力学分析，包括机械谐振器和充电系统的非线性； 2）多自由度谐振器的设计和应用以增强采集； 3）对所提出的设计进行实验验证。此外，与布里斯托大学（英国）的一个团队合作，寻求整合最先进的能量转换策略，该策略可以与宽带谐振器有效地结合使用，以产生可靠、一致的电源。该研究预计将为下一代便携式设备和无线传感器带来支持技术，并为包含非线性元件的系统的设计和优化提供新颖的框架。最后，该项目通过有针对性的外展、本科生研究项目以及对代表性不足群体学生的支持，增强了工程界的多样性。