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介绍了ARINC659总线结构、窗口活动、同步方式,分析了初始同步和重同步过程中时钟漂移和异步度产生的原因。以ARINC659背板总线为核心,设计了满足高安全性和高可靠性需求的四余度综合化、模块化的飞机机载计算机系统,分析了系统架构、总线桥接方式、工作原理。针对余度管理的同步核心功能,设计了系统应用级的任务同步算法和总线通信级的消息同步算法。该同步技术已经应用于型号研制中。
The ARINC659 bus structure, window activity and synchronization mode are introduced. The causes of clock drift and asynchrony in the initial synchronization and resynchronization are analyzed. With ARINC659 backplane bus as the core, four redundant integrated and modular onboard computer systems are designed to meet the requirements of high security and high reliability. The system architecture, bus bridging mode and working principle are analyzed. Aiming at the core functions of redundancy management, a task synchronization algorithm at system application level and a message synchronization algorithm at bus communication level are designed. The synchronization technology has been used in model development.