摘要
航空发动机工作可靠性对于飞行安全至关重要,关键控制参数异常直接危及发动机和飞机飞行安全。从涡扇发动机参数测量异常导致的空中停车出发,剖析了故障原因和处置方案,分析了发动机控制系统容错与故障诊断措施,提出了关键参数余度设计建议,通过重构方法在不增加发动机机械复杂度和硬件成本的前提下提高发动机可靠性。以涡扇发动机压气机后静压(P_(3s))为例,基于进气道特征参数、发动机特征截面测量参数,提出了一种简单实用的P_(3s)重构方法,发动机稳态重构准确度达97%以上;设计了测量值与重构值的切换逻辑,经实装应用验证可行,有效解决了因引气管断裂而出现的发动机异常停车问题。
The operational reliability of aircraft engines is crucial for flight safety,The safety of the engine and aircraft flight is directly endangered by key control parameter anomalies.In-flight shutdown incidents resulting from measurement parameter anomalies was focused on.The cause of the failure of shutdowns in-flight of turbofan engines was analyzed,corresponding remediation strategies was proposed.The solution and method for enhance the fault tolerance of engine control systems through redundancy design and parameter reconstruction mechanisms was propford,which could improve engine reliability without increasing mechanical complexity and hardware.The static pressure of the outlet of high-pressure compressor of a turbofan engine(P_(3s))was reconstituted,by the characteristic parameters of the intake and the measured parameters of the engine s characteristic sections.The accuracy of reconstruction for steady-state is over 97%.The control logic of the measured value and the reconstructed value is designed and successfully applied to the engine,which effectively solved the problem of engine shutdown abnormally caused by bleed air pipe rupture.
作者
贾超
柴小亮
吴有训
JIA Chao;CHAI Xiao-liang;WU You-xun(Overall Engine Performance Research Department,Guiyang Engine Design Institute ofAECC,Guiyang 550081,China;Institute for Aero Engine,Tsinghua University,Beijing 100084,China)
出处
《科学技术与工程》
北大核心
2025年第23期10051-10056,共6页
Science Technology and Engineering
关键词
参数重构
解析余度
航空发动机
可靠性
空中停车
压气机后静压重构
parameter reconstruction
resolution margin
aero engine
reliability
in-flight shutdown
compressor post-pressure reconstruction
