摘要
为了解决某高超声速风洞测量系统设备老化、数据采集通道性能严重下降以及信号线路转接环节较多的问题,开展了新测量系统研制工作;构建了基于PXI总线的新测量系统,选用高精度的信号调理系统和多类型数据采集卡,软件采用模块化、多线程设计模式,集成测力、测压和测热功能于一体,可实现多种试验类型的灵活配置;经试验测试,测量系统的误差限优于0.03%,风洞速度场、温度场和标准模型试验结果满足国标要求,新的测量系统稳定性好,可靠性高,数据采集精准度高,可以满足先进飞行器测试需要。
The hypersonic wind tunnel measurement system has the features of aging equipment,serious degradation in data acquisition channel performance,and many signal line switching links.Based on this issues,a new measurement system is developed.Construct a new measurement system based on PXI bus,select a high-precision signal modulation system and multi type data acquisition card,The software adopts modular and multi-thread design,integrating force measurement,pressure measurement and thermal experiment into one,and can achieve flexible configuration of multiple experiments.After experimental testing,the error of the measurement system is better than 0.03%.Through wind tunnel velocity field,temperature field and standard model testing,the results meet the requirements of national standard.The new measurement system has good stability,high reliability and high acquisition accuracy,which can meet the testing needs of advanced aircraft.
作者
贾霜
蒲麒
陈涌
吴鑫
JIA Shuang;PU Qi;CHEN Yong;WU Xin(High Speed Institute,China Aerodynamics Research&Development Center,Mianyang 621000,China)
出处
《计算机测量与控制》
2025年第7期11-18,共8页
Computer Measurement &Control
关键词
高超声速风洞
测量系统
PXI
信号调理系统
hypersonic wind tunnel
measurement system
PXI
signal modulation system
