高低转速下频闪式转速表的校准  

The calibration of the stroboscopic tachometer for high and low speed

作　　者：席勇辉[1] XI Yonghui(Kunming Ship Borne Equipment Research and Test Centre, Kunming 650051,China)

机构地区：[1]昆明船舶设备研究试验中心,昆明650051

出　　处：《工业仪表与自动化装置》2020年第3期79-82,87,共5页Industrial Instrumentation & Automation

基　　金：国家科技重大专项资助项目(2016ZX05028-005-005)。

摘　　要：随着仪器技术的发展,现有计量技术规范中提供的转速表计量方法有一定局限性,特别是在大量程和高精度频闪式转速表的校准方面。通过对频闪法测转速基本原理的分析,该文阐述了一种能够适应大量程和高精度频闪式转速表的校准方法。该方法通过设置合理的频闪像数量和停留序数,实现对大量程频闪式转速表的校准,满足测量准确度要求,同时分别从低转速和高转速范围2种情况对校准方法以及主要不确定度分量作了分析论述,并结合具体实例对示值误差的测量不确定度进行了计算。With the development of the instrument technology,the tachometer measurement method provided in the existing measurement technical specification has some limitations,especially in the calibration of the large-range and high-precision strobo-type tachometer.Based on the analysis of the basic principle of the stroboscopic tachometer,a calibration method for the stroboscopic tachometer with large range and high precision is described.This method can calibrate the large range stroboscopic tachometer with satisfactory accuracy,by setting the reasonable number of stroboscopic images and stokes.The calibration method and main uncertainty component of the measurement were discussed in the aspects of low-speed and high-speed ranges,and the uncertainty introduced by human reading error is calculated for a practical example.

关 键 词：频闪式转速表 低转速 高转速 读数误差 校准 

分 类 号：TM930.8[电气工程—电力电子与电力传动]