SFMEA方法在飞行控制软件中的应用

Application of Software Failure Modes and Effect Analysis Approach in Flight Control Software

为提高飞行控制软件的安全性,分析了飞行控制软件的安全性薄弱环节,探讨了影响飞行控制软件安全性的隐患。简要阐述了软件失效模式、影响(SFMEA)方法,给出软件失效模式分类的方法以及飞行控制软件常见的失效模式,给出适用于航天飞行控制软件的软件危害性等级,结合某型号飞行控制软件进行了SFMEA方法的尝试性应用,分析了软件失效的局部影响和最终影响,形成了52个SFMEA的分析表格,总结了302个飞行控制软件的失效模式,发现了部分安全性薄弱环节,并提出了相应的改进措施,结果表明,SFMEA方法对提高飞行控制软件的安全性有一定的工程价值。

In this paper, the safety of flight control software is discussed, the software anomaly of flight control software is discussed, the software failure modes and effect analysis approach are introduced. Then software failure modes and the severity levels adaptable to the flight control software are performed, and the software failure modes and effect analysis of the flight control software are performed. Finally some software anomalies are found out and some corrective actions are proposed, the safety of flight control software is enhanced.