标题：Modelling of micro vibration energy harvester considering size effect
作者：Li, Chuangye; Huo, Rui; Wang, Weike
作者机构：[Li, Chuangye; Huo, Rui; Wang, Weike] Shandong Univ, Sch Mech Engn, Jinan 250061, Shandong, Peoples R China.; [Li, Chuangye; Huo, Rui; Wang, Weike] 更多
会议名称：3rd International Conference on Applied Materials and Manufacturing Technology (ICAMMT)
会议日期：JUN 23-25, 2017
来源：2017 3RD INTERNATIONAL CONFERENCE ON APPLIED MATERIALS AND MANUFACTURING TECHNOLOGY (ICAMMT 2017)
摘要：Considering increase of stiffness caused by size effect, equivalent Young's modulus was introduced for futher analysis. Experimental platform was established to test vibration characteristics. Dynamic equation for micro piezoelectric cantilever beam considering size effect was studied with finite element analysis and experiment. Results shows it is accurate. Based on that, dynamic model for micro vibration energy harvester was improved, a T-type micro vibration energy harvester was designed and fabricated. Resonant frequency, tip displacement and output voltage of the harvester were obtained. Comparing with macroscopic model for vibration harvester, improved one reduces errors by 13%, 35% and 22%.