成都大学学报（自然科学版）2025，Vol.44Issue(3)：293-298,336,7.DOI:10.3969/j.issn.1004-5422.2025.03.010
同位素驱动变截面压电能量收集器建模及输出性能研究
Modeling and Output Performance Study of Isotope-Driven Variable Cross-Section Piezoelectric Energy Harvesters
摘要
Abstract
This paper investigates the output performance of an isotope-driven variable cross-section piezo-electric energy harvester.Based on the Euler-Bernoulli beam theory and the radioisotope-driven mecha-nism,a set of electromechanical Lagrangian equations is derived by using the extended Hamilton's princi-ple,and the mathematical model of the isotope-driven variable cross-section piezoelectric energy harvester is constructed.The system of equations is solved by applying the Runge-Kutta method to obtain the output performance of the isotope-driven variable cross-section piezoelectric energy harvester.The accuracy of the model in this paper is verified by comparing the available experimental results.The advantages of the vari-able cross-section over the rectangular cross-section are analyzed,and the effects of the initial gap and load impedance on the maximum output voltage of the isotope-driven variable cross-section piezoelectric energy harvester are discussed.The results show that as initial gap or load impedance increases,the maxi-mum output voltage will increase,and the duty cycle will also increase accordingly.关键词
压电能量收集器/变截面梁/同位素/输出性能/数学模型Key words
piezoelectric energy harvesters/variable cross-section beams/isotope/output performance/mathematical model分类
信息技术与安全科学引用本文复制引用
王钟强,杨瑞凯,杨柳..同位素驱动变截面压电能量收集器建模及输出性能研究[J].成都大学学报（自然科学版）,2025,44(3):293-298,336,7.基金项目
国家自然科学基金(12372179) （12372179）
四川省自然科学基金(2024NSFSC0219) （2024NSFSC0219）
成都大学2022年实验教改项目(cdsyjg2022006) （cdsyjg2022006）
成都大学2025年大学生创业训练计划重点培育项目(S202511079026X) （S202511079026X）
