新型贴片式扭振压电作动器的设计与实验研究  

Design and tests of a surface-bonded type torsional piezoelectric actuator

作　　者：王瑞锋 王亮[1] 贾博韬 金家楣[1] 张泉[2] 吴大伟[1] WANG Rui-feng;WANG Liang;JIA Bo-tao;JIN Jia-mei;ZHANG Quan;WU Da-wei(State Key Laboratory of Mechanics and Control for Mechanical Structures,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;School of Mechanical and Electrical Engineering and Automation,Shanghai University,Shanghai 200072,China)

机构地区：[1]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 [2]上海大学机电工程与自动化学院,上海200072

出　　处：《振动工程学报》2021年第3期481-489,共9页Journal of Vibration Engineering

基　　金：国家自然科学基金资助项目(51905262,51775263);江苏省自然科学基金资助项目(BK20190398);机械系统与振动国家重点实验室开放基金课题资助项目(MSV202011);机械结构力学及控制国家重点实验室开放课题资助项目(MCMS-E-0320G01);上海市自然科学基金探索类项目(19ZR1474000)。

摘　　要：提出了一种新型贴片式扭振压电作动器,采用沿厚度方向极化的方形压电陶瓷片,通过特殊的布置方式来激发矩形梁结构的扭转振动。该压电作动器通过不同的激励方式,可以激发出奇数阶和偶数阶扭转振动,具有结构简单、紧凑、易于加工和安装等特点。为了验证所提出的扭振压电作动器设计方案和工作原理的正确性,建立了理论模型,并采用有限元方法对其进行了动力学特性仿真分析,通过实验对原理样机进行了振动特性测试和动力学行为研究。结果表明,理论模型计算结果、有限元仿真计算结果和实验测试结果基本一致,验证了所提出的压电作动器设计方案的可行性和工作原理的正确性。Torsional piezoelectric actuators have important applications in the fields of ultrasonic processing,piezoelectric sensor,microdroplet generation and so on.However,they meet the problems of difficult processing and manufacturing of piezoelectric ceramic plates,and complicated structural design of the actuator structure,seriously restricting their applications.In order to solve the above problems,a novel surface-bonded type torsional piezoelectric actuator is proposed.It uses square piezoelectric ceramic pieces with a special arrangement which are polarized along their thickness direction to excite the torsional vibration of a rectangular beam structure.The proposed piezoelectric actuator can excite odd order and even order torsional vibrations through different excitation methods,and has the characteristics of simple structure,compactness,easy processing and installation.In order to verify the correctness of the design scheme,operating principle of the proposed torsional piezoelectric actuator,a theoretical model is established,and the dynamic characteristics are simulated and analyzed by using the finite element method.Finally,the vibration characteristics and dynamic behavior of the principle prototype are measured.The results show that the theoretical model calculation results,the finite element simulation results and the experimental results are basically consistent,verifying the feasibility of the design scheme of the proposed piezoelectric actuator and the correctness of its operating principle.

关 键 词：扭振压电作动器 动力学特性 扭转振动 贴片式 谐响应 

分 类 号：TH113.1[机械工程—机械设计及理论]