程廷海,刘文博,卢晓晖,王英廷,包 钢.动态气体载荷下磁力辅助式压电俘能器设计与实验[J].农业机械学报,2018,49(9):176-182.
CHENG Tinghai,LIU Wenbo,LU Xiaohui,WANG Yingting,BAO Gang.Design and Experiment on Magnetic-assisted Piezoelectric Plate Harvester Excited by Dynamic Air Pressure[J].Transactions of the Chinese Society for Agricultural Machinery,2018,49(9):176-182.
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动态气体载荷下磁力辅助式压电俘能器设计与实验   [下载全文]
Design and Experiment on Magnetic-assisted Piezoelectric Plate Harvester Excited by Dynamic Air Pressure   [Download Pdf][in English]
投稿时间:2018-02-27  
DOI:10.6041/j.issn.1000-1298.2018.09.021
中文关键词:  压电俘能器  高压气体  磁力辅助式  动态气体载荷
基金项目:国家自然科学基金项目(51775130)、教育部春晖计划项目(Z2017033)、吉林大学汽车仿真与控制国家重点实验室开放基金面上项目(20171116)和中国博士后科学基金项目(2016M601377)
作者单位
程廷海 长春工业大学 
刘文博 长春工业大学 
卢晓晖 长春工业大学
吉林大学 
王英廷 哈尔滨工业大学 
包 钢 哈尔滨工业大学 
中文摘要:为了实现气动系统低功耗传感器的自供能需求,提出了一种新型磁力辅助式压电俘能器,以此提高俘能器俘获动态气体载荷能的效率。将磁铁间的非接触力作为磁力诱导的预应力施加在压电片中心,当动态气体载荷作用在压电片上时,磁力诱导的预应力可以通过改变压电片的位移来调节压电片表面正负电荷的分布,进而提高俘能器的机电转化效率。仿真研究表明,斥力诱导的预应力可增加俘能器的输出电压,而吸引力诱导的预应力则降低了俘能器的输出电压。采用外径22mm、厚度0.23mm的压电单晶片及缸径63mm、行程150mm的气缸制作实验样机,利用气动组件搭建测试系统。分别调节压力、周期、流量以及磁力等参数进行实验测试。实验结果表明,当俘能器的最佳匹配负载为0.87MΩ时,最大的瞬时功率为1.39mW,俘能器的最大瞬时功率提升12.6%,而引入磁力诱导的预应力仅为气体载荷的0.6%,磁力诱导预应力可有效提高俘能器俘获气动系统动态气体载荷能的效率。
CHENG Tinghai  LIU Wenbo  LU Xiaohui  WANG Yingting  BAO Gang
Changchun University of Technology,Changchun University of Technology,Changchun University of Technology;Jilin University,Harbin Institute of Technology and Harbin Institute of Technology
Key Words:piezoelectric energy harvester  hyperbaric air  magnetic assisted  dynamic high air pressure
Abstract:In order to realize the demand of low power sensor for pneumatic system, a new type of magnetic assisted piezoelectric energy harvester was proposed and it can promote the efficiency of harvesting the dynamic high air. The non contact force between the magnets was used as magnetic induced pre stress acted on the center of the piezoelectric circular diaphragm. The magnetic induced pre stress can adjust the surface charge distribution of the piezoelectric circular diaphragm when the dynamic air pressure acted on the piezoelectric circular diaphragm. The simulation research showed that the repulsive force increased the output power of the magnetic assisted piezoelectric plate harvester, while the attractive force decreased the output power of the magnetic assisted piezoelectric plate harvester. The diameter and thickness of piezoelectric unimorph were 22mm and 0.23mm, respectively. The diameter and distance of cylinder were 63mm and 150mm, respectively, and the prototype of the magnetic assisted piezoelectric plate harvester was fabricated. The test system was built to research the rules and performances of the magnetic assisted piezoelectric plate harvester. In the test, the pressure, cycle, flow and the magnets distances were adjusted. Experimental results showed that the instantaneous power was 1.39mW when the optimal load resistance was 0.87MΩ, and the output power of the generator was promoted 12.6%, while the magnetic induced pre stress was only about 0.6% of the hyperbaric air load. Therefore, the magnetic induced pre stress can effectively improve the efficiency of the dynamic high air in the pneumatic system.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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