不同切角方柱斜切体驰振压电能量收集研究  

Study on Piezoelectric Energy Harvesting of Square Column Oblique Body at Different Angles

作　　者：王军雷 张程雲 陈卫哲 吴义鹏[3] 王定标[1] 靳遵龙[1] WANG Junlei;ZHANG Chengyun;CHEN Weizhe;WU Yipeng;WANG Dingbiao;JIN Zunlong(School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou 450001, China;Xuchang Quality and Technical Supervision, Inspection and Testing Center, Xuchang 461000, China;State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China)

机构地区：[1]郑州大学机械与动力工程学院,河南郑州450001 [2]许昌市质量技术监督检验测试中心,河南许昌461000 [3]南京航空航天大学机械结构力学及控制国家重点实验室,江苏南京210016

出　　处：《郑州大学学报（工学版）》2021年第1期99-104,共6页Journal of Zhengzhou University（Engineering Science）

基　　金：国家自然科学基金资助项目(51977196)。

摘　　要：通过风洞实验,针对带有不同斜切角度方柱斜切体(θ=30°、45°、60°)和光滑方柱的驰振压电俘能器的俘能特性,如电压输出响应进行了研究,并分析了输出功率和电压在不同风速下的变化规律。结果表明:在系统所辨识出的最优负载R=0.6 MΩ下,带有光滑方柱和方柱斜切体(θ=30°、45°、60°)驰振压电俘能器的输出电压和功率均随风速的增大而增大,且增长率均呈现出先增大后减小的趋势;同时,采用光滑方柱作为振动钝体的输出电压和功率均大于方柱斜切体。在风速为U=3.194 m/s时,光滑方柱驰振压电俘能器收集到的输出功率为0.0063 mW,分别是斜切角θ为30°、45°和60°的方柱斜切体的1.28倍、1.39倍和1.55倍;在相同风速下,斜切体中斜切角度θ为30°的方柱斜切体输出电压和功率最大,θ为45°时次之,θ为60°时最小。该研究可以为相关压电俘能器的设计和工程中减振的设计提供借鉴。In this paper,through wind tunnel test,the energy harvesting characteristics of the square column oblique body(θ=30°,45°,60°)and the bare square column with galloping piezoelectric energy harvester were studied.The variation rule of their output power and voltage under different wind speed were analyzed.The results showed that under the optimal load R=0.6 MΩ,the output voltage and power of the bare square column and the square column oblique body(θ=30°,45°,60°)piezoelectric energy harvester increasd with the increase of wind speed,while the growth rate showed a trend of increasing first and then decreasing.The output voltage and power of the bare square column were greater than that of the square column oblique body.When the wind speed was U=3.194 m/s,the output power collected by the bare square column galloping piezoelectric energy harvester was 0.0063 mW,which was 1.28 times,1.39 times and 1.55 times of the square column oblique body with the oblique angleθof 30°,45°and 60°,respectively.Under the same wind speed,the output voltage and power of the square column oblique body with the oblique angleθof 30°were the highest,followed by 45°,and the lowest was 60°.The study of this paper could provide reference for the design of relevant piezoelectric energy harvester and the design of vibration reduction in engineering.

关 键 词：方柱斜切体 压电俘能器 驰振 光滑方柱 减振 

分 类 号：TM619[电气工程—电力系统及自动化]