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基于圆弧限位的压电发电装置
引用本文:王淑云,阚君武,王鸿云,凌荣华,杨振宇,蒋永华,张忠华. 基于圆弧限位的压电发电装置[J]. 光学精密工程, 2013, 21(2): 342-348
作者姓名:王淑云  阚君武  王鸿云  凌荣华  杨振宇  蒋永华  张忠华
作者单位:1. 浙江师范大学 数理与信息工程学院2. 浙江师范大学 精密机械研究所
基金项目:国家自然科学基金资助项目(No.51277166, 51075371);浙江省自然科学基金资助项目(No.LQ12E07002, Y4110315);浙江省新苗人才计划资助项目(No.2011R404027)
摘    要:提出一种基于圆弧限位压电发电装置来提高发电能力及可靠性。介绍了该装置的结构及工作原理,建立了其机电能量转换模型。通过模拟仿真分析获得了压电振子厚度比(基板与总厚度比)对最小限位圆弧半径及能量、及压电振子厚度和限位圆弧半径对电压及能量的影响规律。结果表明,最小限位圆弧半径随厚度比的增加而线性减小,且存在共同的最佳厚度比(0.35)使不同厚度压电振子的输出电压和能量最大;在最佳厚度比时,输出电压和能量随压电振子厚度增加或限位圆弧半径降低而增加。制作了一组限位圆弧半径不等的发电装置,并进行了相关试验测试。结果表明,压电振子的最大输出电压(变形量)仅与限位圆弧半径有关,故采用最小限位圆弧半径可同时获得最大的发电能力和较高的可靠性。

关 键 词:压电发电装置  能量转换  限位圆弧
收稿时间:2012-07-02
修稿时间:2012-09-09

Piezoelectric energy generator based on deflection-limiting circular arc
WANG Shu-yun,KAN Jun-wu,WANG Hong-yun,LING Rong-hua,YANG Zhen-yu,JIANG Yong-hua,ZHANG ZHong-hua. Piezoelectric energy generator based on deflection-limiting circular arc[J]. Optics and Precision Engineering, 2013, 21(2): 342-348
Authors:WANG Shu-yun  KAN Jun-wu  WANG Hong-yun  LING Rong-hua  YANG Zhen-yu  JIANG Yong-hua  ZHANG ZHong-hua
Affiliation:1. College of Mathematics Physics and Information Engineering, Zhejiang Normal University2. Institute of Precision Machinery, Zhejiang Normal University
Abstract:A piezoelectric energy generator with a Deflection-limiting Circular Arc (DLCA) was presented to enhance its generated energy and reliability. The structure and working principle of the piezoelectric generator were introduced and an energy conversion model for the piezoelectric generator was established.By simulation, the influence of thickness ratio of the substrate thickness to the total thickness of the piezo-cantilever on the minimal radius of DLCA as well as the generated energy, and that of total thickness of the piezo-cantilever and the radius of DLCA on the generated voltage as well as electrical energy were obtained. The analytical results show that the minimal radius of the DLCA decreases linearly with the increasing of thickness ratio, and there is a shared optimal thickness ratio(0.35) for piezoelectric generators with different total thicknesses to achieve maximal output voltage and energy. Several piezoelectric generators with different radii of DLCA were fabricated and tested. The results show that the maximal voltage (displacement) of the piezoelectric generator depends mainly on the radii of DLCA. When a minimal radius of DLCA is set, both the maximal electrical energy and higher reliability can be achieved.
Keywords:piezoelectric generator  energy conversion  deflection-limiting circular arc
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