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针对液体火箭发动机试验中紧急关机关键过程进行了深入研究,简述了当前氢氧火箭发动机试验紧急关机的常用模式和方法,对影响自动紧急关机条件判读响应时间的因素进行了理论分析和实验验证,获得了在用紧急关机系统的响应时间指标。针对紧急关机存在的时间延迟问题,提出了缩短条件判读响应时间的途径和具体解决方法。该方法在实际的试验系统中进行了多次验证,程序的正确性和稳定性得到了考核。对大型数据采集及故障诊断系统响应时间分析提供一定的参考依据。
Aiming at the key process of emergency shutdown in liquid rocket engine test, the common mode and method of emergency shutdown of oxyhydrogen rocket engine test are briefly described, and the theoretical analysis and experimental verification of the factors influencing the response time of automatic emergency shutdown condition , Obtained in the emergency shutdown system with response time indicators. Aiming at the time delay of emergency shutdown, this paper puts forward ways and shortcomings of shortening the time to interpret the response time. The method has been verified many times in the actual test system, and the correctness and stability of the program have been evaluated. It provides some reference for the response time analysis of large-scale data acquisition and fault diagnosis system.