本文介绍了“151—4”的容错结构。这是一台自适应可变结构的大型双机复合系统。在实践的基础上探讨几种双机、双部件的容错措施,并且作了简要的理论分析。对使用在151—4机中的动态备份存贮器的维修再入本领、先行控制的弹性结构、以及 CPU 自动切换,文章作了更为详细的说明。151—4机已交付使用。实践证明这些容错技术是行之有效的,为151—4机系统结构增添了特色。 This article describes the “151-4” fault-tolerant structure. This is a large adaptive hybrid two-plane complex system. On the basis of practice, it discusses several kinds of fault-tolerant measures of double machines and double parts, and makes a brief theoretical analysis. The use of 151-4 in the dynamic backup memory repair re-entry skills, the first control of the flexible structure, and CPU automatically switch, the article made a more detailed description. 151-4 machine has been delivered. Practice has proved that these fault-tolerant technologies are effective, adding features to the 151-4 machine system architecture.