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1、题目基于压电材料的振动能量收集技术研究基于压电材料的振动能量收集技术研究[摘要]伴随着无线传感器网络技术和可携带器件的发展，电池续航供能成为其发展的瓶颈之一。为了获得无线生命周期的自主供电系统，利用周围环境的振动能转换为电能为电子器件供电成为亟待解决的问题。其中利用压电材料把振动能转换为电能越来越受到关注，成为能量领域的研究热点。然而目前存在的问题是，等效电路模型理论有待进一步完善；器件产生的输出电压较小，器件结构有待改进；手机电路及收集器件需进一步优化等。针对以上问题，本文对目前国内外压电振动能量收集的发展状况进行了研究，对压电材料的类型、振
2、动模式以及收集电路和器件进行了比较分析，提出了压电振动能量收集器的研究内容。最后，对全文工作进行了总结，并且对下一步计划进行展望，提出新的研究思路。[关键词]振动能；压电效应；压电材料；能量收集电路ResearchonVibrationEnergyHarvestingTechnologyBasedonPiezoelectricmaterialJingChuang（Grad11，Class04,MajorTechniqueandinstrumentationofMeasurements,MechanicalEngineeringDept.,Sha
3、anxiUniversityofTechnology,Hanzhong723000,Shaanxi）Tutor:WangNanAbstract:Withthedevelopmentofwirelesssensornetworktechnologyandportabledevices,thepowersupplyviathebatterybecomesoneofthebottlenecks.Inordertoachievefinitelifetimeofself-poweredsystems,thedesideratingthingistopro
4、videelectricenergyforsuchdevicesandnetworksbyutilizingthevibrationenergyfromtheambientenvironment.Convertingvibrationenergyintoelectricenergyintoelectricenergybypiezoelectricmaterialsattractsmoreandmoreattentionandbecomesthehotpointinmicropowerfield.Howevertheproblemsarethat
5、themodelingtheoryharvesterareoughttobefurtherinvestgated,thestructuresofthepiezoelectricenergyharvesterareoughttobeimprovedbecauseofthesmalloutputvoltageandoptimizingtheharvestingcircuitsandstoragedevicesaremuchindemand.Accordingtotheaboveproblems,thisdissertationinvestgated
6、thedevelopmenttrendofthepiezoelectricvibrationenergyharvestingathomeandabroad,andcomparedthemeritsandshortcomingofthedifferentpartsofstructuresandharvestingcircuits,finally,proposedtheresearchcontentofpiezoelectricvibrationenergyharvester.Intheend,theworkofthisdissertationar
7、esunnarizedbriefly,andnextworkisfiguredout,includingthenovelresearchideas.Keywords:Vibrationenergy,Piezoelectriceffect,Piezoelectricmaterials,Energyharvestingcircuit目录1绪论11.1选题背景和意义11.2能量收集背景知识21.2.1常见的能源及其收集方法21.2.2振动能量收集方法51.3压电振动能量收集技术研究现状及发展趋势71.4能量收集电路与能量转换效率92压电发电技术机理研
8、究112.1压电能量转换基本理论112.1.1压电效应112.1.2压电方程112.2材料与结构的优化选择132.3本章小结133压电振动能量收集器等
