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dc.contributor.supervisor Wu, Nan (Mechanical Engineering) en_US
dc.contributor.author Cheng, Yukun
dc.date.accessioned 2016-09-08T18:06:54Z
dc.date.available 2016-09-08T18:06:54Z
dc.date.issued 2015 en_US
dc.identifier.citation Cheng Y, Wu N, Zhao S. Study on High Efficiency Energy Harvesting Using Piezoelectric Coupled Beam With Self-Tuning Process. ASME 2015 International Mechanical Engineering Congress and Exposition: American Society of Mechanical Engineers; 2015. p. V04BTA047-V04BT04A. en_US
dc.identifier.uri http://hdl.handle.net/1993/31645
dc.description.abstract A frequency self-tuning energy harvesting methodology is proposed to achieve efficient energy harvesting. To simulate the self-tuning process, a theoretical model of the harvester made of an aluminum beam bonded with piezoelectric patches is developed for numerical simulation. The energy harvesting is realized by converting ambient vibration to electric charge through piezoelectric patches on the host beam. To accomplish the frequency self-tuning process, a control voltage is applied on a piezoelectric stack actuator to tune the natural frequency of the beam harvester matching the major excitation frequency of the ambient vibration with large power generation. Two tuning methods with different electric circuits are developed to find the efficient and feasible self-tuning process, which is then further verified by the finite element method. Research findings show that the optimal frequency self-tuning method significantly increases the power output from the harvester by more than 26 times compared with the one without tuning. en_US
dc.publisher ASME 2015 International Mechanical Engineering Congress and Exposition en_US
dc.subject Energy harvesting en_US
dc.subject Piezoelectric materials en_US
dc.subject Transient vibration en_US
dc.title Study on efficient piezoelectric energy harvesting with frequency self-tuning en_US
dc.degree.discipline Mechanical Engineering en_US
dc.contributor.examiningcommittee Xing, Malcolm (Mechanical Engineering) Cha, Young-Jin (Civil Engineering) en_US
dc.degree.level Master of Science (M.Sc.) en_US
dc.description.note October 2016 en_US


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