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压电与摩擦电复合型旋转能量采集动力学协同调控机制研究

赵林川 邹鸿翔 刘丰瑞 魏克湘 张文明

赵林川, 邹鸿翔, 刘丰瑞, 魏克湘, 张文明. 压电与摩擦电复合型旋转能量采集动力学协同调控机制研究. 力学学报, 2021, 53(11): 2961-2971 doi: 10.6052/0459-1879-21-410
引用本文: 赵林川, 邹鸿翔, 刘丰瑞, 魏克湘, 张文明. 压电与摩擦电复合型旋转能量采集动力学协同调控机制研究. 力学学报, 2021, 53(11): 2961-2971 doi: 10.6052/0459-1879-21-410
Zhao Linchuan, Zou Hongxiang, Liu Fengrui, Wei Kexiang, Zhang Wenming. Hybrid piezoelectric-triboelectric rotational energy harvester using dynamic coordinated modulation mechanism. Chinese Journal of Theoretical and Applied Mechanics, 2021, 53(11): 2961-2971 doi: 10.6052/0459-1879-21-410
Citation: Zhao Linchuan, Zou Hongxiang, Liu Fengrui, Wei Kexiang, Zhang Wenming. Hybrid piezoelectric-triboelectric rotational energy harvester using dynamic coordinated modulation mechanism. Chinese Journal of Theoretical and Applied Mechanics, 2021, 53(11): 2961-2971 doi: 10.6052/0459-1879-21-410

压电与摩擦电复合型旋转能量采集动力学协同调控机制研究

doi: 10.6052/0459-1879-21-410
基金项目: 国家自然科学基金(12172127, 11802091)和上海市教育委员会科研创新计划(2019-01-07-00-02-E00030)资助项目
详细信息
    作者简介:

    邹鸿翔, 副教授, 主要研究方向: 智能材料与结构动力学设计. E-mail: zouhongxiang@hnie.edu.cn

    张文明, 教授, 主要研究方向: 动力学与振动控制. E-mail: wenmingz@sjtu.edu.cn

  • 中图分类号: O313.5

HYBRID PIEZOELECTRIC-TRIBOELECTRIC ROTATIONAL ENERGY HARVESTER USING DYNAMIC COORDINATED MODULATION MECHANISM

  • 摘要: 低转速激励下能量采集性能差是目前制约旋转能量采集技术应用的瓶颈问题. 本文提出了动力学协同调控机制, 并用于调控系统的动力学行为, 可以使器件在低转速激励下有效工作, 提高了旋转能量采集系统的电学性能. 旋转刚度软化、非线性磁力、几何边界的协同调控既可以增加系统在低速下的振动位移以及压电材料的形变, 也可调控系统的最大位移, 使其振动可控并限制位移过大提高可靠性. 此外, 几何边界可以方便地集成摩擦纳米发电机, 实现压电与摩擦两种机电转换机制在振动和碰撞过程中协同发电, 有效利用空间和提高输出电能. 基于哈密顿原理建立了系统的机电耦合动力学模型并进行了实验验证. 实验结果表明系统能够在0~250 r/min的低转速范围内有效工作, 在转速为250 r/min时, 压电单元和摩擦纳米发电机的最大峰峰值电压分别为132 V和1128 V, 总平均功率为1426 μW. 本文提出的动力学协同调控机制为能量采集系统动力学和电学性能改进提供新的途径, 有益于促进自供能物联网技术的发展与应用.

     

  • 图  1  低转速下动力学协同调控机制示意图

    Figure  1.  Schematic diagram of dynamic coordinated modulation mechanism in low rotational speed range

    图  2  具有动力学协同调控机制的旋转能量采集器(REH-DCMM)的设计示意图

    Figure  2.  Design of the rotational energy harvester with dynamic coordinated modulation mechanism (REH-DCMM)

    图  3  REH-DCMM系统的动力学模型示意图

    Figure  3.  Schematic diagram of dynamic model of REH-DCMM system

    图  4  实验装置图

    Figure  4.  Experimental setup

    图  5  在不同转速激励下PEH单元和TENG单元的实验和仿真电压波形图. (a) PEH单元和(b)TENG单元在转速为150 r/min和200 r/min时的实验输出电压, (c) PEH单元和(d)TENG单元在转速为150 r/min和200 r/min时的仿真输出电压

    Figure  5.  Comparison of the output voltage of the PEH and the TENG unit from experiments and simulations at different rotational speeds. The experimental voltage from (a) PEH and (b) TENG at the rotational speed of 150 r/min and 200 r/min, the simulation voltage from (c) PEH and (d) TENG at the rotational speed of 150 r/min and 200 r/min

    图  6  激励转速为0~250 r/min范围内, REH-DCMM系统在不同初始磁极中心距(d0 = 20, 22, 24 mm)时的P-P电压和平均功率

    Figure  6.  Comparison of P-P voltage and average power of the REH-DCMM with different center distances of the magnetic poles (d0 = 20, 22, 24 mm) at the rotational speed from 0 to 250 r/min

    7  激励转速为0~250 r/min范围内, REH-DCMM系统在不同悬臂梁厚度(b = 0.2, 0.3, 0.35 mm)时的P-P电压和平均功率

    7.  Comparison of P-P voltage and average power of the REH-DCMM with different thicknesses of the cantilever beam (b = 0.2, 0.3, 0.35 mm) at the rotational speed from 0 to 250 r/min

    图  7  激励转速为0~250 r/min范围内, REH-DCMM系统在不同悬臂梁厚度(b = 0.2, 0.3, 0.35 mm)时的P-P电压和平均功率(续)

    Figure  7.  Comparison of P-P voltage and average power of the REH-DCMM with different thicknesses of the cantilever beam (b = 0.2, 0.3, 0.35 mm) at the rotational speed from 0 to 250 r/min (continued)

    图  8  在刚度软化和刚度硬化效应下, 磁间距20 mm, 梁厚度0.3 mm时, PEH单元和TENG单元输出电压对比.(a) PEH单元, (b) TENG1 单元, (c) TENG2 单元

    Figure  8.  Comparison of the output voltage of the PEH and the TENG unit between centrifugal softening and centrifugal stiffening effects with the same condition (d0 = 20 mm, b = 0.3 mm). (a) PEH unit, (b) TENG1 unit, (c) TENG2 unit

    表  1  REH-DCMM系统的几何和材料参数

    Table  1.   Geometric and material properties of the REH-DCMM system

    Categories Parameter descriptions Values
    cantilever beam length ${s_2}$/m 0.12
    width $ b$/m 0.03
    thickness ${h_{\rm{s}}}$/m 3 × 10−4
    density ${\rho _{\rm{s}}}$/(kg·m−3) 7800
    elastic modulus ${E_{\rm{s}}}$/GPa 200
    piezoelectric material (MFC) length ${s_1}$/m 0.037
    thickness ${h_{\rm{p} } }$/m 3 × 10−4
    density ${\rho _{\rm{p}}}$/(kg·m−3) 5440
    elastic modulus ${E_{\rm{p}}}$/GPa 30.336
    coupling coefficient
    ${d_{31}}$/(C·N−1)
    −1.70 × 10−10
    dielectric constant ${\varepsilon _{33}}$/(F·m−1) 1.265 3 × 10−8
    triboelectric nanogenerator length ${s_{\rm{T}}}$/m 0.083
    thickness ${h_{\rm{T}}}$/m 3.1 × 10−4
    density ${\rho _{\rm{T}}}$/(kg·m−3) 1912
    elastic modulus ${E_{\rm{T}}}$/MPa 300
    others mass of permanent
    magnet $ m$/kg
    0.042
    thickness of permanent
    magnet ${t_{\rm{m}}}$/m
    5 × 10−3
    permanent magnet
    volume ${V_{\rm{A}}}$, ${V_{\rm{B}}}$/m3
    4 × 10−4
    residual magnetic
    flux density ${B_{\rm{r}}}$/T
    1.2
    vacuum permeability ${\mu _0}$ 1.256 × 10−6
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-08-21
  • 录用日期:  2021-08-29
  • 网络出版日期:  2021-08-30
  • 刊出日期:  2021-11-18

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