摘要
为提高飞机的利用率,以丧失推力控制(LOTC)为边界条件,研究航空发动机全权限数字电子控制系统(FADEC)冗余部件故障的限制派遣方法,分析FADEC系统多故障的维修性特点,提出多故障派遣的决策方法及维修策略,建立蒙特卡罗仿真的TLD分析步骤,融合FADEC系统可靠性模型,对FADEC系统进行蒙特卡罗模拟仿真得出多故障派遣时间。分析仿真结果可知,对于短时类(ST)和长时类(LT)组合的多故障可派遣间隔结束后应立即修理,不应延长故障保留时间。当派遣间隔超过7000h时不应采用多故障保留方式派遣。
In order to improve the utilization ratio of the aircraft, using the lost thrust control(LOTC) as the boundary condition, the limited dispatch method for the faults of redundant components in the aero-engine FADEC system(FADEC) was studied, and the maintainability characteristics of the FADEC system with multiple faults were analyzed, the decision method and maintenance strategy of multi-fault dispatch were proposed, the TLD analysis step of Monte Carlo method was established, the FADEC system reliability model was fused, the Monte Carlo method of FADEC system was simulated, and the dispatch time with multi-fault was obtained.The simulation result shows that the combination of short-time(ST) class fault and long-time(LT) class fault in FADEC system should be repaired immediately after dispatch interval, and the fault retention time should not be prolonged.When the dispatch interval is more than 7000 h, the fault deferred mode should not be adopted.
作者
闫锋
侯甲栋
YAN Feng;HOU Jia-dong(Aviation Engineering Institute,Civil Aviation Flight University of China,Guanghan Sichuan 618307,China)
出处
《计算机仿真》
北大核心
2021年第9期76-79,149,共5页
Computer Simulation
基金
工信部民机专项(MJ-2018-Y-56)
中国民用航空飞行学院科研基金项目(J2014-31,J2018-57,Q2015-057)。
关键词
全权限数字电子控制
时间限制派遣
丧失推力控制事件
蒙特卡罗模拟
Full authority digital electronic control(FADEC)
Time-limited dispatch(TLD)
Event of loss of thrust control(LOTC)
Monte Carlo simulation
