基于wMPS的新型位移测量方法研究  

Research on novel displacement measurement method base on wMPS

作　　者：刘砚涛[1] 杜珺[1] 徐国梁[1] 刘彦毛 林嘉睿[2] LIU Yantao;DU Jun;XU Guoliang;LIU Yanmao;LIN Jiarui(Beijing Institute of Structure and Environment Engineering,Beijing Dynamic Test Machine Engineering Research Center, Beijing 100076, China;State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University,Tianjin 300072, China)

机构地区：[1]北京强度环境研究所北京市振动测试设备工程技术研究中心,北京100076 [2]天津大学精密测试技术及仪器国家重点实验室,天津300072

出　　处：《强度与环境》2017年第5期58-64,共7页Structure & Environment Engineering

摘　　要：随着参试产品尺寸不断增大,试验规模也不断扩大,传统的容栅式位移传感器已经不能适应型号试验发展的需求。室内空间测量定位系统(workspace measuring position system,简称wMPS)是一种基于光平面交会定位原理的大型结构网络式测量系统,在空间三维坐标测量方面有着广阔的应用前景。本文针对航天器结构静力试验中仅关注被测量点相对变形的特点,利用wMPS系统的角度测量数学模型,辅以激光测距,对测量系统进行优化,实现了目标点的轴向位移和径向位移同时测量。该方法具有多点实时测量与跟踪,精度高,试验前无需标定,安装简便等特点。试验表明,wMPS系统测量误差小于0.1mm,完全可以替代传统的容栅式位移传感器。The traditional capacitance-grate type displacement sensor will not being met the requirement of model testing development,as the sample becomes larger and test scale is extending.Workspace measuring position system(wMPS)is a novel large-scale measuring position system,which is based on light-plane intersection,and has a well foreground of application on special coordinate measurement.In a static test of spacecraft fabric,there is an attention on relative distortion of the measuring point.The article achieved the measurement of both axial and radial displacement of target points,with a supplement of laser ranging and optimization of measuring system.The system had many characteristics,such as multimetering,high precision,none calibration before examination,portable fixing,etc.As a result,measuring error of wMPS was less than0.1mm,which could replace the traditional capacitance-grate type displacement sensor.

关 键 词：wMPS 室内定位 坐标测量 位移测量 

分 类 号：V[航空宇航科学技术]