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1. 大连理工大学 精密与特种加工教育部重点实验室,辽宁 大连,116024
2. 大连理工大学 电子科学与技术学院,辽宁 大连 116024
收稿日期:2012-05-28,
修回日期:2012-07-17,
纸质出版日期:2012-12-10
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崔岩, 王飞, 董维杰, 姚明磊, 王立鼎. 非线性压电式能量采集器[J]. 光学精密工程, 2012,20(12): 2737-2743
CUI Yan, WANG Fei, DONG Wei-jie, YAO Ming-lei, WANG Li-ding. Nonlinear piezoelectric energy harvester[J]. Editorial Office of Optics and Precision Engineering, 2012,20(12): 2737-2743
崔岩, 王飞, 董维杰, 姚明磊, 王立鼎. 非线性压电式能量采集器[J]. 光学精密工程, 2012,20(12): 2737-2743 DOI: 10.3788/OPE.20122012.2737.
CUI Yan, WANG Fei, DONG Wei-jie, YAO Ming-lei, WANG Li-ding. Nonlinear piezoelectric energy harvester[J]. Editorial Office of Optics and Precision Engineering, 2012,20(12): 2737-2743 DOI: 10.3788/OPE.20122012.2737.
由于非线性技术可使压电式能量采集获得较宽的振动频率和较高的输出电压
本文基于非线性振动研究了一种压电式能量采集器。基于Duffing模型测试得到了非线性压电能量采集器的振动方程
对其振动特性进行了仿真测试。在不同永磁体间距的条件下
测试了非线性压电式能量采集器的开路输出电压
结果表明
当激振台加速度为20 m/s
2
时
该非线性压电式能量采集器的最大输出电压从线性系统输出时的131 V提高到208 V
最大输出功率为43.264 mW
主共振频率变化范围达到18 Hz。该Duffing模型的结构可以在小范围内改变非线性压电式能量采集器的共振频率
同时提高其输出电压。
As nonlinear technology allows piezoelectric energy harvesting to obtain a wider vibration frequency and a higher output voltage
this paper proposed a piezoelectric energy harvester based on nonlinear vibration.The oscillation equation of the piezoelectric energy harvester was obtained based on testing Duffing mode and its vibration charateristics were simulated. With the various sinusoidal excitation frequencies and different magnet spacings
the opened output voltage was measured. The results show that when the excitation acceleration is 20 m/s
2
the output voltage from the energy harvester has been improved to 208 V from 131 V
its maximum output power is 43.264 mV
and the resonance frequency region can range up to 18 Hz. The Duffing model structure can change the resonant frequency of the nonlinear piezoelectric energy harvester in small scope
and can increase the output voltage.
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