双足压电直线作动器结构优化与实验  

Structure Optimization and Experiment of Double-Feet Piezoelectric Linear Actuator

作　　者：钟相强 张本学 黄卫清[1,3] 孙梦馨 ZHONG Xiangqiang;ZHANG Benxue;HUANG Weiqing;SUN Mengxin(State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics Nanjing,210016,China;School of Mechanical 3 Automotive Engineering,Anhui Polytechnic University Wuhu,241000,China;School of Mechanical 3 Electric Engineering,Guangzhou University Guangzhou,510006,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,南京210016 [2]安徽工程大学机械与汽车工程学院,芜湖241000 [3]广州大学机械与电气工程学院,广州510006

出　　处：《振动．测试与诊断》2018年第5期1037-1043,1086,共8页Journal of Vibration,Measurement & Diagnosis

基　　金：国家自然科学基金资助项目(51375224);安徽高校自然科学研究重点项目(KJ2017A121);江苏高校优势学科建设工程资助项目(PAPD);安徽工程大学研究生教育创新基金资助项目(2016-25)

摘　　要：为提高双足压电直线作动器的有效驱动,增强作动器中二级杠杆微位移结构和柔性铰链的放大能力,对作动器的结构参数进行优化。首先,对二级杠杆微位移机构的放大倍数进行理论计算,基于ANSYS完成作动器定子作动仿真过程;其次,通过仿真分析发现,在作动器定子中综合使用直圆型柔性铰链和直梁型柔性铰链,会使作动器定子放大倍数得到优化,最优铰链参数对应的放大倍数为8.131;最后,制作了该作动器样机并进行了定子驱动足振幅测试,两驱动足的振动相对稳定。实验结果表明,驱动足I,II的位移振幅在60和63μm的上下范围浮动,与实际相符合。与现有的压电直线作动器相比较,该作动器结构简单,易于安装调试,具有大振幅驱动和运行稳定等特点。In order to improve the effective drive of double-feet piezoelectric linear actuator and enhance magnifying ability of micro-displacement structure of secondary lever and flexure hinge in actuator,structural parameters of the actuator are optimized.Firstly,the amplification of secondary lever micro-displacement mechanism is calculated theoretically,and the simulation process of the actuator stator is completed based on ANSYS.Secondly,through the simulation analysis,it is found that the comprehensive use of straight circular flexure hinge and straight beam flexure hinge in the actuator stator can optimize the magnification of the actuator stator,and the corresponding magnification of the optimal hinge parameter is 8.131.Thirdly,the prototype of the actuator is made and the amplitude of the stator driving foot is tes--ed,and vibrations of two driving feet are relatively stable.The experimental results show that the displacement amplitude of driving foot I and II floats in the range of 60 and 63!m.Compared with the exis--ing piezoelectric linear actuator,the actuator has advantages of simple structure,easy installation and de bugging,and high stable operation.

关 键 词：非共振 双足压电直线作动器 压电叠堆 二级杠杆 柔性铰链 

分 类 号：TH112.5[机械工程—机械设计及理论] TM359[电气工程—电机]