压电式力传感器三向分载研究  

Research on Three-direction Load Distribution of Piezoelectric Force Sensors

作　　者：张军[1] 胡沛锴 马奕萱 王郁赫 任宗金[1] ZHANG Jun;HU Pei-kai;MA Yi-xuan;WANG Yu-he;REN Zong-jin(School of Mechanical Engineering,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]大连理工大学机械工程学院,辽宁大连116024

出　　处：《仪表技术与传感器》2022年第11期123-126,共4页Instrument Technique and Sensor

基　　金：国家自然科学基金资助项目(51475078,51675084);航空科学基金资助项目(20160163001);中央高校基本科研业务基金资助项目(DUT17GF211)。

摘　　要：针对测力仪中因敏感元件自身量程上限不能满足重载测试需求的问题,以压电力传感器为研究对象开展了分载研究。通过建立传感器分载装置模型,对模型的三向分载公式及理论分载比进行推导计算,并利用有限元仿真与标定实验对影响分载效果的因素进行了分析。结果表明:分载环横截面积变化及高度差异是影响分载效果的主要因素,分载比计算值与实验测试值的相对误差在4.6%以内。In order to solve the problem that the upper limit of the measuring range of the sensing element in the dynamometer cannot meet the requirements of heavy load testing, the load distribution of the piezoelectric force sensors was studied.By establishing the model of sensor load distribution device, the formula of three direction load distribution and the theoretical load distribution ratio of the model were deduced and calculated, and the factors affecting the load distribution effect were analyzed by finite element simulation and calibration experiment.The results show that the variation of cross-sectional area and height difference of the loading ring are the main factors affecting the loading effect, and the relative error between the calculated value of the loading distribution ratio and the experimental value is less than 4.6%.

关 键 词：大力值 轴向分载 侧向分载 分载比 压电传感器 静态标定 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]