动力系统试验自动紧急关机系统设计与建立

根据某型号动力系统试验要求，为了保证试验产品和试验台的安全，选取代表发动机工作状态的典型参数作为自动紧急关机判断依据，通过合理设置紧急关机判别准则，基于现有Pacific 6000数据采集装置建立了改进型红线报警系统进行在线实时检测。通过对系统硬件和软件的剖析、测试，得出该系统时间响应综合滞后偏差为0～0.25s。利用信号发生器模拟发动机真实工作参数值对传感器异常检测、发动机关机故障判定、数据存贮和事后查询功能进行了综合验证，系统无漏关机和误关机现象发生，为产品及试验台的安全提供了保证。可为其它故障检测系统建立和响应时间分析提供参考。

Automatic emergency shutdown system design and build used in power system test

According to a power system test requirements, through setting up reasonable shutdown criterion, design and set up the modified red line automatic emergency shutdown system, and analysis and test the system time response characteristics in-depth, the test results show that this system has realized the anomaly detection of sensors, engine shutdown fault judgment, data storage and query function, system without shutdown and shutdown happened by mistake, guarantee for the products and the safety of the test bench.