Traceable periodic force calibration
Traceable periodic force calibration
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DOI：
10.1088/0026-1394/49/3/224
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发表时间：
2012-06-01
期刊：
影响因子：
2.4
通讯作者：
Kumme, R.
中科院分区：
文献类型：
--
作者：
Schlegel, Ch;Kieckenap, G.;Kumme, R.
描述了使用力传感器的正弦激励进行动态力校准的过程。该方法基于力传感器的正弦激励，力传感器配备有由电动振动台系统激励的附加顶部质量。以这种方式，作用的动态力可以根据牛顿定律确定为质量乘以加速度，由此借助激光干涉仪在顶部质量的表面上测量加速度。动态灵敏度，即力传感器的电输出信号与作用动态力的比值，是这种动态校准的主要关注点。除了灵敏度之外，还可以确定传感器的参数刚度和阻尼。本文的第一部分概述了描述传感器动态行为的数学模型。接下来介绍所涉及测量量的可追溯性及其不确定性。本文最后给出了 25 kN 应变仪力传感器的校准示例。
A procedure for dynamic force calibration using sinusoidal excitations of force transducers is described. The method is based on a sinusoidal excitation of force transducers equipped with an additional top mass excited with an electrodynamic shaker system. The acting dynamic force can in this way be determined according to Newton's law as mass times acceleration, whereby the acceleration is measured on the surface of the top mass with the aid of laser interferometers. The dynamic sensitivity, which is the ratio of the electrical output signal of the force transducer and the acting dynamic force, is the main point of interest of such a dynamic calibration. In addition to the sensitivity, the parameter stiffness and damping of the transducer can also be determined. The first part of the paper outlines a mathematical model to describe the dynamic behaviour of a transducer. This is followed by a presentation of the traceability of the measured quantities involved and their uncertainties. The paper finishes with an example calibration of a 25 kN strain gauge force transducer.