无人机航空电子系统余度技术的利用大大提高了无人机系统的可靠性和安全性；通过分析多余度航空电子系统的可靠度方案,选取了合适的航空电子系统余度构型,并提出了适合三余度航空电子系统的余度架构和余度管理策略;另外对采用了基于余度策略的航空电子系统的关键技术——余度管理技术进行了研究,分析了航空电子系统余度管理的任务,在此基础上提出了管理算法方案；最后,建立了系统的可靠性模型,采用数值计算的方法,得到了系统可靠性的变化结果,为无人机航空电了系统余度设计提供了可供参考的依据.%UAV avionics system redundancy technology has greatly enhanced the reliability and security of unmanned aircraft system. The multi- redundant avionics system reliability program is analyzed in this paper, appropriate avionics redundancy configuration is designed, and appropriate architecture and redundant management strategy for three redundant avionics system are proposed. The use of redundant management technology, which is the key technology in redundant avionics system, is also studied, and a redundant management algorithm program is proposed based on the analysis of the redundant management missions. In the end, the system reliability model is built and the results of system reliability achieved by the method of numerical computing, which provides a redundant reference basis for the design of UAV aviation electronic system.
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