小型三维力传感器弹性体设计与分析

Design and Analysis of Elastomer for Small Three dimensional Force Sensor

小型感知设备要求传感器体积小、灵敏度高、维间耦合小。以小型仿生机器人指尖力学感应为应用目标,设计了一种小型三维力传感器弹性体,属于悬臂型双孔平行梁弹性体结构。将平行梁与悬臂梁结合,进行结构优化,使这一弹性体可用于小尺寸、高精度的应力处理,且测量量程可通过改变双孔平行梁厚度和宽度进行调节,具有广泛的适用性。应用ANSYS软件进行弹性体力学特性仿真分析,结果表明,弹性体具有较高的精度、较强的抗横向偏载能力和物理解耦能力,能够保证小型三维力传感器的测量准确性。

Small sensing device requires sensor to be small in size,high sensitivity and small inter dimensional coupling.Taking fingertip mechanic sensing of the small bionic robot as application goal,an elastomer for small three dimensional force sensor was designed,which belongs to the cantilever type double hole parallel beam elastomer structure.The parallel beam and cantilever beam are combined together to optimize the structure,so that this elastomer can be used for small size and high precision stress treatment,and the measurement range can be adjusted by changing the thickness and width of the double hole parallel beam,which has wide applicability.The mechanical characteristic of elastomer was simulated and analyzed by ANSYS software.The result shows that the elastomer has high accuracy,strong lateral bias resistance and physical decoupling ability,which can ensure the measurement accuracy of the small three dimensional force sensor.