华中科技大学学报（自然科学版）2026，Vol.54Issue(1)：40-45,6.DOI:10.13245/j.hust.240781
电磁式振动能量收集器的寿命预测方法研究
Research on the life prediction method of electromagnetic vibration energy collector
摘要
Abstract
A Comsol stress analysis combined with S-N curve was developed to evaluate the fatigue life of an electromagnetic vibration energy harvester.Firstly,the open circuit voltage,optimal matching resistance,and coil resistance at the resonant frequency were experimentally measured to establish a quantitative relationship between vibration acceleration and the maximum force acting on the spring.Then,a model was established in Comsol based on the structural dimensions of the harvester,and the S-N curve of the corresponding material was selected.Finally,the stress distribution characteristics of the spring at different accelerations were combined to obtain the number of spring failure cycles corresponding to each acceleration.To overcome the problems of insignificant spring fatigue at low accelerations and long experimental cycles,aging experiments were conducted in high acceleration environments of 2.2g and 2.5g(g is the acceleration due to gravity).Based on the proposed method,a resonant frequency of 30 Hz was constructed The aging test prototype of the electromagnetic energy harvester was tested,and the experimental results were consistent with the simulation predictions,verifying the feasibility and accuracy of the method.关键词
电磁式能量收集器/弹簧疲劳老化/Comsol应力仿真/S-N曲线/寿命分析Key words
electromagnetic energy harvester/spring fatigue aging/Comsol stress simulation/S-N curve/life analysis分类
信息技术与安全科学引用本文复制引用
李春龙,黄辉,鞠登峰,彭晗,王劭菁,马昊晟..电磁式振动能量收集器的寿命预测方法研究[J].华中科技大学学报（自然科学版）,2026,54(1):40-45,6.基金项目
国家电网有限公司总部科技项目(5500-202358769A-3-6-ZX). （5500-202358769A-3-6-ZX）
