机车车辆制动电阻温升试验用轻量化测温系统的设计
Design of Light-weight Temperature Measurement System for Locomotive Vehi-cle Brake Resistance Temperature Rise Test
黄永刚 1李勇 1石春珉1
作者信息
- 1. 中国铁道科学研究院集团有限公司 标准计量研究所,北京 100015;中铁检验认证中心有限公司,北京 100015
- 折叠
摘要
针对轨道交通机车车辆制动电阻温升试验时温度测量的需求,设计了 一款基于图形化编程语言LabVIEW的多通道温度测量系统,可以实现14通道的温度同时采集、显示、绘图及数据保存.为提高系统测量精度,以测量系统的实测值和标准源约定真值作为多项式拟合的数据源,采用最小二乘法曲线拟合的方法对测量系统进行标定,来降低测量误差、提高测量精度.测试结果表明,系统运行稳定可靠,测量精度显著提高.
Abstract
Aiming at the requirement of temperature measurement during the temperature rise test of the braking re-sistance of rail transit locomotives vehicle,a multi-channel temperature measurement system based on the graphical programming language Lab VIEW is designed,which can realize simultaneous temperature acquisition,display,drawing and data storage of 14 channels.In order to improve the measurement accuracy of the system,the actual measured value of the measurement system and the agreed true value of the standard source are used as the data source for polynomial fitting,and the least square method curve fitting method is used to calibrate the measurement system to reduce the measurement error and improve the measurement accuracy.The test results show that the system is stable and reliable,and the measurement accuracy is significantly improved.
关键词
机车车辆制动电阻/温升试验/LabVIEW/多通道温度测量/最小二乘法/测量系统标定Key words
locomotive vehicle brake resistance/temperature rise test/LabVIEW/multi-channel temperature measure-ment/least square method/measurement system calibration引用本文复制引用
基金项目
中铁检验认证中心有限公司自主投入项目(BJ2022S04)
出版年
2024
NETL
NSTL
万方数据