摘要： 容错计算机系统可实现高任务可靠性，广泛应用于飞控系统。该文对双机容错计算机进行分析，基于心跳线、交叉通道链路实现系统级设计，基于使能、环路器实现了模块级设计。竞争型主从机身份确认算法用于系统启动时的主从机认定，表决算法用于判断数据的有效性并分析系统是否存在故障，同步任务用于在分机间实现状态、任务、时钟

关键词: 双机容错, 故障检测与隔离, 表决, 同步

Abstract: Fault-tolerant computer system can implement a good task-reliability, so it is used in flight control system broadly. This paper analyzes dual-computer fault-tolerant system, implements system hardware based on heart-beat line, cross-channel data link, and realizes modular hardware using enabling signal, self-loop circuits. System appoints master or slave computer utilizing identity-affirmant algorithm at start-up. Voting algorithm judges validity of data and detects fault. Synchronous algorithm synchronizes status, task and clock.

Key words: dual-computer fault-tolerant, fault detection and isolation, voting, synchronization

中图分类号: 

• TP303