航空发动机试车台数据采集器原位综合校准技术研究  

Research on in-situ comprehensive calibration technology of aircraft engine test bench data acquisition unit

作　　者：刘杰 刘琴 张宇 LIU Jie;LIU Qin;ZHANG Yu(AECC Hunan Aviation Powerplant Research Institute,Zhuzhou 412002,China)

机构地区：[1]中国航发湖南动力机械研究所,湖南株洲412002

出　　处：《计测技术》2024年第6期69-78,共10页Metrology & Measurement Technology

基　　金：国家科技重大专项项目(J2019-Ⅱ-0009-0029)。

摘　　要：为满足航空发动机试车台使用的精密数据采集器现场原位校准需求,研发数据采集器原位综合校准系统。研制低热电势扫描开关,并开发数据采集器校准软件用于控制多功能校准源、低热电势扫描开关和精密数据采集器以实现现场原位校准,利用低热电势通路切换技术自动转换采集多种信号,通过多线程校准技术自动化、并行化执行校准程序。开展试验对航空发动机试车台数据采集器原位综合校准系统的应用效果进行测试,结果表明该系统准确性符合要求,且利用该系统校准单台数据采集器所需时间仅为3h,相较传统手动校准方法效率提高了6倍以上。该系统为实现多通道数据采集器高效化、便捷化、现场化校准提供了有力支撑,并为其他测量设备现场原位自动化校准技术研究提供了重要借鉴。To meet the on-site in-situ calibration requirements of precision data collectors used in aircraft engine test benches,a comprehensive in-situ calibration system for data collectors has been developed.A low thermoelectric potential scanning switch was designed,and the data collector calibration software was developed for controlling multifunctional calibration sources,low thermoelectric potential scanning switches,and precision data collectors to achieve on-site in-situ calibration.The low thermoelectric potential path switching technology was used to automatically convert and collect multiple signals.Automated and parallelized execution of calibration programs was realized through multi-threaded calibration technology.The application effect of the in-situ comprehensive calibration system for aircraft engine test bench data collectors was verified through experiments.The results showed that the accuracy of the system met the requirements,and the time required to calibrate a single data collector using the system was only 3 hours,which was more than 6 times more efficient than traditional manual calibration methods.This system provides strong support for achieving efficient,convenient,and on-site calibration of multi-channel data collectors,and provides important reference for the research of in-situ automation calibration technology for other measuring equipment.

关 键 词：航空发动机测试 发动机试车台 数据采集器 原位校准 低热电势扫描开关 多线程校准 

分 类 号：TB9[一般工业技术—计量学] V263[机械工程—测试计量技术及仪器]