摘要
由于单自由度的圆弧型悬臂梁具备多方向同频率吸收能量的优点,因此该圆弧树杈型压电能量收集器可以扩宽系统的工作频带并且具有较高的功率输出。文中建立了器件阵子模型用于描述多自由度圆弧树杈型压电能量收集器,通过理论模型分析可得四阶谐振频率为:4.08、4.38、4.50、4.74 Hz。基于非线性构型的压电方程,可得谐振频率下输出开路电压均在20 V左右,且水平与竖直方向上均有有效输出。
Since the single circular arc cantilever beam has the advantage of absorbing energy in multiple directions and at the same frequency,the circular bifurcation piezoelectric energy harvester can enlarge the working frequency band of the system and has a higher power output.A device array model which can describe the multi-degree of freedom structure such as the circular bifurcation piezoelectric energy harvester is established,through analyzing the theoretical model,the theoretical fourth order resonance frequency are:4.08 Hz,4.38 Hz,4.5 Hz,4.74 Hz.Based on the voltage equation of the nonlinear configuration,it can be obtained that the output open-circuit voltage at the resonant frequency is about 20 V,and there are effective outputs in both horizontal and vertical directions.
作者
宋娟
刘琪才
陆颢瓒
杨佳慧
朱宇宬
王德波
SONG Juan;LIU Qi-cai;LU Hao-zan;YANG Jia-hui;ZHU Yu-chen;WANG De-bo(College of Intelligent Manufacturing Institute,Qingdao Huanghai University,Qingdao 266427,China;College of Electronic and Optical Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210023,China)
出处
《仪表技术与传感器》
CSCD
北大核心
2020年第7期38-42,共5页
Instrument Technique and Sensor
基金
国家青年自然科学基金项目(61704086)
中国博士后科学基金项目(2017M621692)
江苏省博士后基金项目(17011318)
南京邮电大学国自基金孵化项目(NY215139,NY217039)
南京大学近代声学教育部重点实验室开放课题资助项目(1704)
青岛黄海学院重点科研项目(2019KJ03)。
关键词
圆弧树杈型
多方向振动
宽频带
阵子模型
circular arc bifurcation
multi-directional vibration
broadband
array model
