| 压电微悬臂梁振动能量采集器谐振频率和功率的研究 |
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| 引用本文： | 李艳宁,李雯,任平,郭彤,鄢志丹,傅星,胡小唐. 压电微悬臂梁振动能量采集器谐振频率和功率的研究[J]. 天津大学学报(自然科学与工程技术版), 2009, 42(4): 373-376 |
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| 作者姓名： | 李艳宁 李雯 任平 郭彤 鄢志丹 傅星 胡小唐 |
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| 作者单位： | 李艳宁,李雯,郭彤,鄢志丹,傅星,胡小唐,LI Yan-ning,LI Wen,GUO Tong,YAN Zhi-dan,FU Xing,HU Xiao-tang(天津大学精密测试技术及仪器国家重点实验室,天津,300072);任平,REN Ping(中国空空导弹研究院,洛阳,471009) |
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| 基金项目： | 国家自然科学基金，高等学校学科创新引智计划，中奥国际科合作资助项目 |
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| 摘 要： | 压电振动能量采集器可将自然界中广泛存在的机械振动能转换为电能，并且一直向微型化电源的目标迈进．为此，以矩形压电微悬臂梁结构作为换能单元，通过时压电层等效电流源和单相桥式整流电路的理论及相关公式的推导，得出微能量功率的计算公式．通过分析看出，在实际设计压电振动能量采集装置时，可采用适当增加质量块质量和减小梁长度的方式来满足整体结构在自然环境中实现低频谐振、获得较大的功率输出的设计要求．
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| 关 键 词： | 压电微悬臂梁 微能源 振动能量采集 谐振频率 |
Resonance Frequency and Power Output of Piezoelectric Microcantilever Energy Harvesting System |
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| LI Yan-ning,LI Wen,REN Ping,GUO Tong,YAN Zhi-dan,FU Xing,HU Xiao-tang. Resonance Frequency and Power Output of Piezoelectric Microcantilever Energy Harvesting System[J]. Journal of Tianjin University(Science and Technology), 2009, 42(4): 373-376 |
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| Authors: | LI Yan-ning LI Wen REN Ping GUO Tong YAN Zhi-dan FU Xing HU Xiao-tang |
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| Affiliation: | LI Yan-ning, LI Wen, REN Ping, GUO Tong, YAN Zhi-dan, FU Xing, HU Xiao-tang (1. State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University,Tianjin 300072 ,China; 2. China Airborne MissileAcademy,Luoyang 471009,China) |
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| Abstract: | Piezoelectric energy harvesting system can utilize widely-existing mechanic vibration as the power source, meanwhile ,striding forward to the goal of power source miniaturization. An energy harvesting structure based on rectangle piezoelectric microcantilever was set up and the process of energy transform from vibration to electric was generally analyzed. Through piezoelectric layer equivalent circuit and typical AC-DC rectification circuit,a mathematical expression of micro power was deduced. Analytical results show that,increasing the quality of mass and decreasing the length of rnicrocantilever can realize the low-frequency resonance and maximum power in actual design. |
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| Keywords: | piezoelectric microcantilever micro power vibration energy harvesting resonance frequency |
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