机械科学与技术2025，Vol.44Issue(4)：676-683,8.DOI:10.13433/j.cnki.1003-8728.20230236
自限位双稳态压电能量采集性能优化研究
Optimization of Self-limiting Bistable Piezoelectric Energy Harvesting Performance
摘要
Abstract
As for low output power and small energy harvest range of existing piezoelectric energy harvesting devices,a novel self-limiting bistable piezoelectric energy harvesting device is proposed to harvest rotational energy.The bistable cantilever beam can obtain a large displacement,in order that the piezoelectric sheet affixed to the root of the cantilever beam can lead a large deformation to achieve a high electrical output.A curved boundary is also introduced to limit the cantilever beam to prevent the breakage of piezoelectric sheet induced by excessive deformation of the cantilever beam.When the cantilever beam strikes the curved boundary to generate vibration,it further enhances the electrical output of device.Compared with the structure without bistability,the device proposed is been further optimized,and the experimental and simulation analysis results show the maximum average power is increased by 21%,and the energy at high rotating speed can be collected.关键词
压电俘能/双稳态/旋转能量收集/磁力/自限位Key words
piezoelectric energy harvest/bistability/rotating energy collection/magnetism/self-limiting分类
电子信息工程引用本文复制引用
喻顺,郑学军,白泉..自限位双稳态压电能量采集性能优化研究[J].机械科学与技术,2025,44(4):676-683,8.基金项目
国家自然科学基金项目(11832016)、湖南创新型省份建设专项(2020GK2014)及合肥通用机械研究院有限公司项目(2021ZKKF043) （11832016）
