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Traceable static and dynamic calibration of multi-component sensors for force and torque measurements

用于力和扭矩测量的多分量传感器的可追溯静态和动态校准

基本信息

批准号：
271952369
负责人：
Dr.-Ing. Rolf Kumme
金额：
--
依托单位：
Institut für Produktionsmesstechnik
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2015
资助国家：
德国
起止时间：
2014-12-31 至 2018-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/271952369?language=en
关键词：
Traceable static dynamic calibration multi

项目摘要

It is the aim of this project to reduce the uncertainty of calibration of multi-axis force- and torque sensors for static measurements and for the first time provide a measurement procedure for the traceable calibration of these sensors for dynamic measurements. To reach these goals the force- and torque-components acting on the multicomponent- sensor to be calibrated are determined by measuring the geometry and the deformation characteristics of the loading device and the position of the weights by means of optical 3Dmetrology with high spatial and temporal resolution. For the measurement of geometry and deformation characteristics an optical 3D-metrology technique using the principle of near-field photogrammetry is adapted to the special requirements of the static multi-axis measurement in a hexapod loading device and evaluated in addition to the readings of the internal gauges. The relative measurement uncertainty of the static six-axis measurement of force and torque shall be reduced by a factor of 5. In addition the basic requirements for traceable dynamic multi-axis measurements will be provided. This includes the definition and the examination of appropriate adapter elements and weights for the generation of multiaxis dynamic forces and torques acting on multi-component sensors, the optimization of the applied optical 3D metrology according to the principle of near-field photogrammetry to achieve high temporal and spatial resolution, preliminary experiments to combine the near-field photogrammetry with areal uniaxial velocity measurements using a laser-scanning vibrometer at the shaker. Based on this work for the first time the traceable calibration of multi-axis force and torque sensors for dynamic measurements will be possible. The quantitative determination of an uncertainty of calibration of dynamic six-axis force and torque measurement is a significant progress compared to existing state of technology.

该项目的目的是减少多轴力和扭矩传感器静态测量校准的不确定性，并首次为这些传感器动态测量的可追溯校准提供测量程序。为了达到这些目标，通过测量加载装置的几何形状和变形特性以及重量的位置，利用具有高空间和时间分辨率的光学三维测量来确定作用在待校准多分量传感器上的力和扭矩分量。为了测量几何和变形特性，采用近场摄影测量原理的光学3d测量技术适用于六足装载装置中静态多轴测量的特殊要求，并在内部量规的读数之外进行评估。力和扭矩静态六轴测量的相对测量不确定度应降低5倍。此外，还将提供可追溯动态多轴测量的基本要求。这包括定义和检查适当的适配器元素和权重，以产生作用于多分量传感器的多轴动态力和扭矩，根据近场摄影测量原理优化应用光学三维测量，以实现高时空分辨率；在激振器上使用激光扫描测振仪将近场摄影测量与面单轴速度测量相结合的初步实验。在此基础上，首次实现了多轴力和扭矩传感器动态测量的可追溯校准。动态六轴力和扭矩测量标定不确定度的定量确定与现有技术相比是一项重大进步。