• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Conference on Active and passive smart structures and integrated systems >Optimization of Power Generation from Energy Harvesters in Broadband Stochastic Response
【24h】

Optimization of Power Generation from Energy Harvesters in Broadband Stochastic Response

机译：宽带随机响应中能量收割机的发电优化

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This paper presents recent analytical results pertaining to the optimization of power flow from vibratory energyharvesting systems, using principles from optimal feedback control and network theory. Historically, much of theresearch concerning such technologies has presumed that the vibratory energy source, from which power is to beextracted, oscillates harmonically at a known frequency. In this case, the optimization of power extraction fromsuch sources by a resonant energy harvester can readily be accomplished through the use of classical impedancematching techniques. However, in many applications, vibratory power sources exhibit dynamic behavior moreappropriately characterized by a stochastic process. In some cases, the power spectrum of this process mayexhibit a rather wide band. In such circumstances, impedance matching techniques cannot be used to optimizepower flow from the harvester, because the dynamic impedance they prescribe is always anticausal. This paperpresents several theoretical concepts, intended for broad application in the energy harvesting area, which can beused to optimize power extracted from broadband sources. It is shown that in the broadband case, an optimalcausal impedance still exists which maximizes power generation, but in order to derive it, the dissipation in theelectrical system, as well as the mechanical system, must be taken into account in th system model. Levels ofpower generation with this controller are compared to those of the anticausal optimal performance, as well asto control design techniques that match the anticausal impedance at the resonant frequency. It is demonstratedthat such causal matching techniques can be significantly sub-optimal in broadband applications, especially whenelectronic conversion is relatively efficient.
机译：本文介绍了最近有与振动能量气流量的优化有关的分析结果，采用来自最佳反馈控制和网络理论的原理。从历史上看，关于这种技术的大部分研究推测，振动能源，从中伸出的振动能源，以已知的频率谐振。在这种情况下，可以通过使用经典的阻抗技术来容易地通过谐振能量收割机来优化来自谐振能量收割机的功率提取源。然而，在许多应用中，振动动力源表现出通过随机过程的动态行为。在某些情况下，该过程的功率谱可能会致力于相当宽的频段。在这种情况下，阻抗匹配技术不能用于从收割机的优化软管，因为它们规定的动态阻抗总是抗静电。本文论文特许经济概念，旨在在能量收集区域进行广泛应用，这可以被植入优化从宽带源提取的功率。结果表明，在宽带情况下，最大化的最佳阻抗最大化发电，但为了导出它，在系统模型中，必须考虑电系统的耗散，以及机械系统。将该控制器的功率产生的水平与富有抗静阻抗以谐振频率相匹配的Asto控制设计技术进行比较。据证明这种因果匹配技术可以在宽带应用中显着次优，特别是当电子转换相对较高时。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号