用于检测三维力的柔性触觉传感器结构研究及有限元分析  

The Structure Research Flexible Tactile Sensor for the and Finite Element Analysis of Detection of Three-dimensional Force

作　　者：刘彩霞[1] 黄英[1] 缪伟[1] 蔡文婷[1] 袁海涛[1] 曹广辉[1] 

机构地区：[1]合肥工业大学电子科学与应用物理学院,合肥安徽230009

出　　处：《计量学报》2014年第5期458-462,共5页Acta Metrologica Sinica

基　　金：国家自然科学基金（61072032）;合肥工业大学校科研基金（2012HGXJ0065）

摘　　要：基于力敏导电橡胶材料，设计了一种四电极对称结构的三维力柔性触觉传感器。利用有限元分析软件ANSYS，结合橡胶材料的Mooney—Rivlin本构模型，对传感器加载垂直力和剪切力进行有限元分析，得到传感器在三维力作用下的应力应变分布状态，并进行了实验验证，结果表明了传感器结构设计和数学模型构建的合理性。通过对传感器传力的触头材料和形状进行有限元分析，表明触头选择硬度相对较大的材料，制成长椭球状半径（a=1．5b），可以优化传感器的性能，为用于检测三维力的柔性触觉传感器的实际应用提供了依据。Based on flexible pressure-sensitive conductive rubber, a flexible tactile sensor with four-electrode symmetrical structure, which has three-dimensional force detection function, is designed. Combined finite element analysis software ANSYS with the Mooney-Rivlin theory of rubber, the strain and stress information of the flexible tactile sensor under the action of vertical force and shear stress is obtained through Finite element analysis. The rationality of the structure of three-dimension force tactile sensor and the mathematical models of calculating three dimension forces was verified by experiment. By using finite element analysis on the materials properties and geometric configuration of force transmission hemisphere, the research indicates that the harder materials and the prolate ellipsoid shape （radius a = 1.5b） can optimize the characteristic of the sensor. It provides the basis for the practical application of the flexible tactile sensor for the detection of three-dimensional force.

关 键 词：计量学 触觉传感器 三维力 力敏导电橡胶 有限元 

分 类 号：TB931[一般工业技术—计量学]