| 非线性压电振动能量俘获行为建模及其不同参数影响机理研究 |
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| 引用本文： | 陈仲生,骆彦廷,杨拥民. 非线性压电振动能量俘获行为建模及其不同参数影响机理研究[J]. 国防科技大学学报, 2013, 35(2): 154-158 |
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| 作者姓名： | 陈仲生 骆彦廷 杨拥民 |
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| 作者单位： | 国防科技大学 装备综合保障技术重点实验室，湖南 长沙 410073;国防科技大学 装备综合保障技术重点实验室，湖南 长沙 410073;国防科技大学 装备综合保障技术重点实验室，湖南 长沙 410073 |
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| 基金项目： | 湖南省自然科学基金资助项目（11JJ3046）;国家自然科学基金资助项目（51275520, 50805142） |
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| 摘 要： | 如何利用非线性特性来改善压电振动能量捕获性能是工程实际中需要解决的一个问题,为此建立了非线性压电振动能量捕获行为的数学模型,利用定积分法推导了该模型的数值计算方法,并针对不同参数对非线性压电振子输出电能的影响特性进行了数值仿真,结果表明:减小非线性阻尼、增大非线性压电耦合系数均有利于提高非线性压电振动能量俘获的性能;减小非线性刚度能提高低频振动能量俘获的输出,但减小了共振带宽。
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| 关 键 词： | 压电振动能量俘获 非线性模型 数值方法 宽带 |
| 收稿时间： | 2012-06-10 |
| 修稿时间： | 2013-03-08 |
Modeling of nonlinear piezoelectric vibration energy harvesting behaviors and the effects of its different parameters |
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| CHEN Zhongsheng,LUO Yanting and YANG Yongmin. Modeling of nonlinear piezoelectric vibration energy harvesting behaviors and the effects of its different parameters[J]. Journal of National University of Defense Technology, 2013, 35(2): 154-158 |
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| Authors: | CHEN Zhongsheng LUO Yanting YANG Yongmin |
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| Affiliation: | Laboratory of Science and Technology on Integrated Logistics Support, National University of Defense Technology, Changsha 410073, China;Laboratory of Science and Technology on Integrated Logistics Support, National University of Defense Technology, Changsha 410073, China;Laboratory of Science and Technology on Integrated Logistics Support, National University of Defense Technology, Changsha 410073, China |
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| Abstract: | How to improve the performance of piezoelectric vibration energy harvesting (PVEH) with nonlinearities is a key problem in engineering applications. A mathematic model of nonlinear PVEHs is built in this paper. A fast numerical method based on the principle of the definite integral is proposed to solve the nonlinear model. Then the effects of these nonlinear parameters on the performance of nonlinear PVEHs are simulated. The results demonstrate that both reducing nonlinear damping and increasing nonlinear piezoelectric coupling coefficients will improve the performance, and reducing nonlinear stiffness will increase the output of low frequency vibration energy harvesting, while decrease its resonant bandwidth. |
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| Keywords: | piezoelectric vibration energy harvesting nonlinear model numerical method broadband |
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