基于LabWindows/CVI的流场控制系统设计  

Design of flow field control system based on LabWindows/CVI

作　　者：王政 周宣赤[1,2] 高维金 崔春 Wang Zheng;Zhou Xuanchi;Gao Weijin;Cui Chun(China Academy of Aerospace Aerodynamics,Beijing 100071,China;Beijing Aerospace Yisen Wind Tunnel Engineering Technology Co.,Ltd.,Beijing 100071,China)

机构地区：[1]中国航天空气动力技术研究院,北京100071 [2]北京航天益森风洞工程技术有限公司,北京100071

出　　处：《电子测量技术》2022年第6期36-41,共6页Electronic Measurement Technology

摘　　要：针对当前某小型高速风洞信息化程度不高、流场须要通过手动调节方式实现稳定的情况,根据风洞流场控制流程,设计基于LabWindows/CVI的上位机监控系统,并在某小型高速风洞实现部署;系统通信采用基于DataSocket的OPC通信协议,上位机通过接收NI OPC服务器的数据,高效且可靠得实现与下位机PLC的信息交互;上位机软件运用多线程、异步定时器等技术,实现数据的实时显示、历史数据记录及数据存储等功能,并通过可视化界面进行人机交互,方便操作人员使用。经大量试验分析,新的流场控制系统调节速度快、精度高、稳定可靠,满足某型高速风洞流场控制系统的设计要求,对于降低能源能耗、提高风洞信息化和自动化水平,具有有一定的参考价值。According to the situation that a small high-speed wind tunnel at a low level of informatization and the flow field of the wind tunnel needs to be manually adjusted to achieve stability.Based on the flow field control process, this paper designs a LabWindows/CVI-based upper computer control system and applies it in a small high-speed wind tunnel. The system communication uses the OPC communication protocol based on DataSocket, The upper computer can efficiently and reliably realize the information interaction with PLC by receiving the data of Ni OPC server. The upper computer software uses multi-threading, asynchronous timer and other technologies to realize the functions of real-time data display, historical data record and storage, and friendly human-machine interface which is convenient for operators to use.Through a lot of test and analysis, the newly designed flow field control system has fast response, stable operation and high accuracy, which meets the design requirements of high-speed wind tunnel control system. It has certain reference value for reducing energy consumption, improving information technology and automation level of wind tunnel.

关 键 词：LABWINDOWS/CVI OPC 流场控制 PLC 

分 类 号：TP271.3[自动化与计算机技术—检测技术与自动化装置]