基于压电驱动的柔性微夹钳设计及静态特性分析  

Flexure microgripper design and static characteristic analysis based on piezoelectric drive

作　　者：纪久祥 任琪[1] 邓钦文 梁涛 高明 JI Jiuxiang;REN Qi;DENG Qinwen;LIANG Tao;GAO Ming(School of Intelligent Engineering,Chongqing City Management College,Chongqing 401331,China)

机构地区：[1]重庆城市管理职业学院智能工程学院,重庆401331

出　　处：《传感器与微系统》2022年第4期48-51,共4页Transducer and Microsystem Technologies

基　　金：重庆市教育科学规划项目(2020-GX-385)。

摘　　要：设计了基于压电陶瓷驱动的两级放大柔性微夹钳机构,采用柔顺机构学、材料力学、卡氏定理,并结合微夹钳的工作原理,推导了桥式放大机构(BAM)的输入输出刚度及微夹钳机构的输入刚度方程,基于桥式机构理论位移增益,推导了微夹钳中桥式机构位移增益,进一步推导了微夹钳桥式-杠杆两级放大机构的位移增益。应用有限元分析软件Ansys 15.0,对该微夹钳进行了仿真分析,并对有限元分析值及解析值进行了对比分析,其结果变化规律基本一致,验证微夹钳静态特征方程得的正确性,为全柔性机构的研究提供了方法及参考。A two-stage amplification flexure microgripper based on piezoelectric-driven is designed.The input and output stiffness equations of the bridge amplification mechanism(BAM)and the input stiffness equations of microgripper are derived by using the Compliant mechanism,Mechanics of materials and Castigliano’s theorem and combined with the working principle of the microgripper.Based on the theoretical displacement gain of BAM,the displacement gain of BAM of microgripper is derived,and the displacement gain of microgripper is further derived.Simulation analyses of microgripper are completed by using Ansys 15.0,The finite element analysis values and analytical values are compared,the variation rules of the results are basically consistent,which verified the correctness of the static characteristic equation of the microgripper,and provided method and reference for the study of the flexible mechanism.

关 键 词：微夹钳 压电驱动 位移增益 刚度 有限元分析 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TH112[自动化与计算机技术—控制科学与工程]