BRIGE: Adaptive Vibrational Energy Harvesting Systems through Semi-Passive Control of Nonlinear Oscillators

BRIGE：通过非线性振荡器半被动控制的自适应振动能量收集系统

基本信息

批准号：
1342070
负责人：
Shad Roundy
金额：
$ 17.44万
依托单位：
University of Utah
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2013
资助国家：
美国
起止时间：
2013-09-01 至 2016-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1342070&HistoricalAwards=false
关键词：
BRIGE Adaptive Vibrational Energy Harvesting

项目摘要

ECCS-1342070Roundy, ShadrachUniversity of UtahBRIGE: Adaptive Vibrational Energy Harvesting Systems through Semi-Passive Control of Nonlinear OscillatorsABSTRACTIntellectual Merit: Vibrations are ubiquitous in many wireless sensor application spaces, and have been widely proposed as a potential source of power. A continuing issue with vibration energy harvesters is the very tight linkage between the specific parameters of the vibration environment and the structural parameters of the harvester necessary for efficient power generation. In reality, most vibration sources change with time, and therefore a harvester that adapts to its vibration environment could potentially operate much more efficiently and provide a stable source of power over a broad range of operating environments as does a battery. This BRIGE project proposes a new method of providing such adaptability through control of the nonlinear stiffness function of duffing oscillators. The research seeks to address the following questions: under what circumstances is closed loop control beneficial, and under what circumstances will active tuning of a nonlinear harvester outperform active tuning of a linear harvester? Understanding the conditions under which closed loop control can provide a net increase in power and the relationship between the characteristics of input vibrations and the optimal type of structure to control will lay the groundwork for efficient adaptable vibration energy harvesters. The models and data generated by this research will lead to further work on optimal control techniques for nonlinear harvesters.Broader Impacts: The field of energy harvesting for wireless sensors is accessible to and has wide appeal across age groups and levels of technological sophistication. Leveraging that interest, this project will integrate two outreach activities with the express goal of broadening participation and interest in engineering careers among high school aged female students. The College of Engineering sponsors an annual summer camp designed to expose young women to a variety of engineering careers with hands-on experiential learning. A module will be developed for use in this camp in which students design, build, and test a simple piezoelectric accelerometer and energy harvester. The second activity is to sponsor interactive kinetic energy harvesting sculpture design projects for both undergraduate students and students at a local high school. During the first year of this grant, the principle investigator will supervise the sculpture project as part of the senior design course, and the following year he will sponsor the project at a local high school as a joint engineering / art class project. The sculpture design has the potential to engage artistically minded students who may not otherwise be interested in careers in engineering and science.

ECCS-1342070 ROUNDY，utahbrige的Shadrachuniversity：通过半通过控制非线性振荡的振动能量收集系统的自适应振动能量收集系统，振动在许多无线传感器应用空间中无处不在，并已广泛提出了潜在的力量来源。振动能量收割机的持续问题是振动环境的特定参数与有效发电所需的收割机的结构参数之间非常紧密的联系。实际上，大多数振动来源会随着时间而变化，因此，适应其振动环境的收割机可能会更有效地运行，并像电池一样在广泛的操作环境中提供稳定的功率来源。这个Brige项目提出了一种通过控制振荡器的非线性刚度功能来提供这种适应性的新方法。该研究旨在解决以下问题：在什么情况下，闭环控制有益，在什么情况下，非线性收割机的积极调整将超过线性收割机的积极调整？了解封闭环控制的条件可以提供净增加功率以及输入振动特征与控制结构的最佳类型之间的关系，将为有效的适应性振动能量收获者提供基础。这项研究产生的模型和数据将导致对非线性收获者的最佳控制技术的进一步研究。Boader的影响：无线传感器的能量收集领域可访问，并且在年龄组和技术成熟水平之间具有广泛的吸引力。为了利用这一兴趣，该项目将整合两项外展活动，并明确的目标是扩大高中年龄女学生的参与和对工程职业的兴趣。工程学院赞助了一个年度夏令营，旨在通过动手体验学习使年轻女性接触各种工程职业。将开发一个模块，用于在该营地中设计，构建和测试简单的压电加速度计和能量收割机。第二个活动是为本科生和当地高中的学生和学生都为互动动力收获雕塑设计项目。在这笔赠款的第一年中，主要调查员将作为高级设计课程的一部分监督雕塑项目，第二年，他将在当地一所高中作为联合工程 /艺术课程赞助该项目。雕塑设计有可能吸引那些可能对工程和科学职业不感兴趣的艺术意识学生。