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针对国内大型民用飞机主飞行控制计算机系统复杂,计算机故障种类繁多以及故障检测困难等诸多问题,通过分析主飞行控制计算机各部件的功能及故障模式,研究飞机在执行飞行任务过程中主飞行控制系统BIT在不同阶段检测内容,对主飞行控制计算机的核心部件给出了具体BIT自检测方法以及实现自检测的相关电路;研究表明文章中给出的自检测方法能高效并准确地检测出主飞控计算机核心部件在飞控系统运行过程中出现的故障情况,进而提高了主飞控计算机的可靠性。
Aiming at the problems of complex flight control system, large variety of computer faults and difficulty of fault detection in the main flight control of large domestic commercial aircraft, this paper studies the functions and failure modes of each component of the main flight control computer, studies the main flight control system BIT test content in different stages, the main components of the main flight control computer gives a specific BIT self-test method and the realization of self-test circuit; research shows that the article given in the self-test method can efficiently and accurately detect the main fly Control computer core components in the flight control system during the operation of the fault occurred, thereby enhancing the reliability of the main flight control computer.