三余度飞控计算机架构及其可靠性研究

Research on architecture of triple-redundant flight control computer and its reliability

余度架构设计是解决飞控计算机可靠性问题的有效途径。为了满足高可靠性飞控计算机系统对可靠性和容错性的特殊要求的目的,提出一种新型三余度飞控计算机的余度架构方案,描述飞控计算机冗余设计方法,设计余度计算机软硬件的总体框架,采用马尔可夫方法对该方案进行了可靠性分析,获得了故障覆盖率和失效率对飞控计算机整体可靠性的影响结果,得到所设计余度架构方案可行的结论。

Redundant architecture design is an effective way to solve the reliability issue for the flight control computer （FCC）. A redundancy architecture approach of a new triple-redundant FCC and a design method of describing FCC redundancy are＇proposed to meet the special requirements of high-reliability and fault tolerance in FCC system. A overall framework of the redundant computer hardware and software was designed. The reliability analysis of the approach was performed with Markov method. The influence of the fault coverage and the failure rates on the reliability of FCC was achieved. The feasibility of this redundant architecture design is proved.