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.%In allusion to large civil aircraft primary flight control computer system complexity, a wide range of computer failure, detecting difficulty and many other issues. The various components of Primary Flight Control Computer functions and failure modes are analyzed. The test content of primary flight control system BIT at different stages during the mission are researched. The mainflight control computer s core components are given a specific test method and related circuits to achieve self-test. Studies have shown that these self-test methods can efficiently and accurately detect the core component of the primary flight control computers when the flight control system occurred failure during operation, thereby increasing the reliability of the main flight control computer.
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