民用飞机飞控系统离散信号混合监控方法研究  

Discrete signal hybrid monitor for civil aircraft flight control system

作　　者：朱平 申海荣[1] 李棋[1] ZHU Ping;SHEN Hairong;LI Qi(Shanghai Aircraft Design and Research Institute,Shanghai 201210,China)

机构地区：[1]上海飞机设计研究院,上海201210

出　　处：《民用飞机设计与研究》2025年第1期72-75,共4页Civil Aircraft Design & Research

摘　　要：在民用飞机飞控系统中,对于一些关键信号,除了采用总线信号外,还采用了可靠性较高的离散信号,正确的信号监控可以有效提高系统安全性。传统飞控系统对离散信号的监控较为简单,导致在某些特定场景下会出现系统误告警的情况,如在落地连续过程中会触发轮载离散信号监控器,从而触发飞控不派遣告警信息。因此对传统信号监控逻辑进行了优化,将信号分为高频和低频,分别进行监控器设计。设计了一种在低频下以比较监控为主,在高频下以基于累加/累减计数器监控为主的飞控系统离散信号混合监控方法,并且在累加/累减计数器速率的设定中,选择快速累加计数和缓慢累减计数,同时快速累加的速率小于零星杂散事件变化速率,以实现振荡故障检测功能和针对零星杂散事件的鲁棒性,应用结果表明该方法可以解决传统监控在特定场景下导致系统误告警的情况。In the civil aircraft flight control system,in addition to bus signals,discrete signals with high reliability are also used.Correct signal monitoring can effectively improve system security.The monitoring of discrete signals by traditional flight control system is relatively simple,resulting in false alarms in some specific scenarios.For ex⁃ample,during the continuous process of landing,the weight on wheel monitor will be triggered,thereby triggering flight control no dispatch message.Therefore,this paper optimizes the traditional monitoring logic,divides the sig⁃nal into high frequency and low frequency,and designs the monitor separately.A discrete signal hybrid monitoring method for flight control system is designed,which is mainly based on comparison monitoring at low frequency and based on cumulative/regressive counter monitoring at high frequency.In the setting of cumulative/regressive coun⁃ter rate,selecting fast cumulative counting and slow regressive counting down,and the rate of fast cumulative is less than the rate of change of sporadic spurious events,to realize the function of oscillation fault detection and ro⁃bustness against sporadic spurious events.The application results show that this method can solve the problem of traditional monitoring in circumstances that cause false alarms in some specific scenarios.

关 键 词：飞控系统 离散信号 信号监控 累加/累减计数器 

分 类 号：V249.1[航空宇航科学与技术—飞行器设计]