传感技术学报2018，Vol.31Issue(5)：683-687,5.DOI:10.3969/j.issn.1004-1699.2018.05.005
激励频率自适应的采煤机状态压电俘能监测装置研究
Study on Piezoelectric Energy Harvesting Device for State Monitoring of Shearer Adaptive to Excitation Frequency
摘要
Abstract
Considering that piezoelectric energy harvesting device used for state monitoring of shearer could not change natural frequency in real-time according to changes of external excitation frequency,a king of piezoelectric energy har-vesting device for state monitoring of shearer adaptive to external excitation frequency was studied. Mathematical model establishment,finite element simulation of natural frequency and experimental study were conducted on piezoe-lectric energy harvesting device with adjustable frequency. Results showed that:with focus changes of cantilever beam of piezoelectric energy harvesting device,excitation frequency corresponding to maximum of power generation of piezo-electric energy harvesting device changed constantly. Piezoelectric energy harvesting device adaptive to external exci-tation frequency could control frequency range from 7 Hz to 55 Hz. Output power of various piezoelectric energy har-vesting devices installed anywhere of shearer could be about 300 mW by piezoelectric energy harvesting device adap-tive to external excitation frequency. Piezoelectric energy harvesting device adaptive to external excitation frequency could adjust excitation frequency at different positions when shearers were under operation to keep stable power supply for monitoring device.关键词
采煤机/无线监测装置/压电自供电/悬臂梁/可变频率Key words
coal mining machine/wireless monitoring device/self powered piezoelectric/cantilever beam/variable fre-quency分类
信息技术与安全科学引用本文复制引用
师建国,高广财,滕睿..激励频率自适应的采煤机状态压电俘能监测装置研究[J].传感技术学报,2018,31(5):683-687,5.基金项目
国家自然科学基金项目(51104082) （51104082）
中国煤炭工业协会2011年度科学技术研究指导性计划项目(MTKJ2011-330) （MTKJ2011-330）
