本文通过介绍飞控计算机的余度管理技术及同步运行方式，讨论某型飞控计算机在外场报“飞控一次”的故障机理、对同步算法原理设计及硬件连方式进行综述，然后建立了多余度飞控计算机同步算法分析流程，分析故障机理，发现计算机通道之间的时延影响及逻辑规律，为余度计算机故障分析提供了理论基础。

This paper introduces the redundancy management technology and synchronous operation mode of flight control computer, discusses the fault mechanism of one type of flight control computer in the outfield, the principle design of synchronization algorithm and the hardware connection mode, and then establishes the redundant flight control computer synchronization algorithm analysis flow, analyzes the failure mechanism. It is found that the delay effect and logic rule between the computer channels provide the theoretical basis for the redundancy computer fault analysis.