摘要
针对某射流风洞系统架构复杂、控制对象及液压机构多、模型支撑机构调节灵活、马赫数连续变化可调的特点,研制了一套专用的安全连锁与状态监控系统;该系统充分利用Profinet等先进现场总线和实时网络技术,搭建了基于西门子S7-1500系列PLC为核心控制器的硬件平台,并自主研发了实时监控软件系统,解决了多层/多源控制子系统之间的快速数据交换、试验前仿真运行模拟策略等技术问题,建立了可靠的安全联锁逻辑与三级关车机制;系统静动态测试表明,该系统适用马赫数0.3~3.5区间内的风洞试验,快速阀开闭时间优于10 s,调压阀开闭时间优于2 s,压力监测精准度优于0.1%,阀门开度监测精准度优于0.1 mm,监测与控制调节周期优于100 ms,系统运行稳定流畅,数据实时准确,为风洞人员及设备安全提供了必要的软硬件保障。
Jet wind tunnel system has the characteristics of complex architecture,multiple control objects and hydraulic mechanisms,flexible adjustment of model support mechanisms,and continuous adjustable Mach numbers,a special safety interlock and status monitoring system is developed.The system fully utilizes advanced field bus and real-time network technologies such as Profinet,builds a hardware platform based on Siemens S7-1500 series PLC as the core controller,and independently develops a real-time monitoring software system.It solves technical problems such as fast data exchange between multi-layer or multi-source control subsystems,simulation operation strategy before testing,and establishes reliable safety interlocking logic and three-level shutdown mechanism.The static and dynamic testing results of the system show that it is suitable for wind tunnel tests with a range of 0.3~3.5 Ma,the opening and closing time of the fast valve is better than 10 s,that of the pressure regulating valve is better than 2 s,the pressure monitoring accuracy is better than 0.1%,the valve opening monitoring accuracy is better than 0.1 mm,the monitoring and control adjustment cycle is better than 100 ms,the system operates stably and smoothly,and the data are real-time and accurate,providing necessary software and hardware guarantees for the safety of wind tunnel personnel and equipment.
作者
黄昊宇
凌忠伟
刘为杰
吴琦
肖晋
HUANG Haoyu;LING Zhongwei;LIU Weijie;WU Qi;XIAO Jin(High Speed Institute,China Aerodynamics Research&Development Center,Mianyang 621000,china)
出处
《计算机测量与控制》
2024年第8期215-221,共7页
Computer Measurement &Control
关键词
实时网络
射流
风洞
安全联锁
状态监测
real-time network
jet
wind
safety interlock
status monitoring
