| 压电式振动发电机的建模及应用 |
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| 引用本文： | 贺学锋,温志渝,温中泉.压电式振动发电机的建模及应用[J].光学精密工程,2009,17(6):1436-1441. |
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| 作者姓名： | 贺学锋 温志渝 温中泉 |
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| 作者单位： | 重庆大学,光电技术及系统教育部重点实验室,重庆,400044;重庆大学,微系统研究中心,重庆,400044 |
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| 基金项目： | 国家自然科学基金，国家高技术研究发展计划(863计划)，the Cultivation Fund of the Key Scientific and Technical Innovation Project of Ministry of Education of China |
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| 摘 要： | 振动式压电发电机是一种可为旋转机械故障诊断中的无线传感节点供电的微能源。本文设计了由压电悬臂梁、质量块和固定装置组成的振动式压电发电机,并建立了安装在恒速旋转机械上的悬臂梁式发电机的数学模型。分析了轴向分力对悬臂梁刚度和发电机频率的影响,在考虑悬臂梁受到轴向力影响的基础上,给出了发电机固有频率、输出电压和输出功率的公式。对一个安装于转动框架上的振动式压电发电机进行了测量,结果表明,当框架转动频率为14.25 Hz时,发电机的输出功率约为35 μW,随着旋转机械转动频率偏离发电机固有频率,发电机的输出功率很快降低。
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| 关 键 词： | 能量获取 振动发电机 压电发电机 微机电系统 |
| 收稿时间： | 2009-01-20 |
| 修稿时间： | 2009-04-30 |
Modeling and application of piezoelectric vibration-based power generator |
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| HE Xue-feng,WEN Zhi-yu,WEN Zhong-quna.Modeling and application of piezoelectric vibration-based power generator[J].Optics and Precision Engineering,2009,17(6):1436-1441. |
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| Authors: | HE Xue-feng WEN Zhi-yu WEN Zhong-quna |
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| Affiliation: | 1. Key Laboratory of Optoelectronic Technology and Systems of the Ministry of Education Chongqing University;Chongqing 400044;China;2. Microsystem Research Center;Chongqing University;China |
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| Abstract: | The piezoelectric vibration-based power generator is a promising MEMS electricity source to power wireless sensing nodes for the fault diagnosis of rotary machines. In this paper,a piezoelectric vibration-based power generator is designed and the mathematical model of the cantilever piezoelectric generator used in rotary mechines is established.Then,the effects of the axial extension force on the stiffness of the beam and the frequency of the generator are analyzed,and the formulas of the frequency, output ... |
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| Keywords: | energy harvesting vibration generator piezoelectric generator MEMS |
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