Power performance of circular piezoelectric diaphragm generators

作     者：Kehong TANG Junwu KAN Taijiang PENG Zhigang YANG Guangming CHENG 

作者机构：College of Mechanical Science and Engineering Jilin University Changchun 130025 China College of Mechatronics and Control Engineering Shenzhen University Shenzhen 518060 China 

出 版 物：《中国高等学校学术文摘·机械工程》 (FRONTIERS OF MECHANICAL ENGINEERING IN CHINA)

年 卷 期：2008年第3卷第4期

页      面：434-440页

核心收录：

学科分类：08[工学] 080203[工学-机械设计及理论] 0802[工学-机械工程] 

基　　金：国家自然科学基金(50477003) 

主　　题：piezoelectric energy harvesting output power Rayleigh method 

摘      要：Energy generation performance of a piezo-electric generator depends mainly on several elements such as the structural style, boundary conditions, geo-metry parameters, materials, vibration-source frequency, and external load. To obtain the optimal energy-harvest-ing device, the Raleigh method is used to establish the analysis model of circular piezoelectric composite dia-phragms. Simply supported and clamped boundary con-ditions were considered. The relationships between the output power and the structural parameters of piezo-electric composite diaphragms, and the external load res-istance and frequency were shown. Given the correlative material parameters and boundary conditions, the output power, using structural parameters, external load, or vibrating frequency as variables, can be calculated. Simulation results show that there are optimal structural parameters and load for a composite diaphragm to achieve the maximum output power. A piezoelectric dia-phragm generator with given dimensions tends to achieve higher output power under clamped boundary conditions than that under simply supported boundary conditions.