摘要
实时分布式系统必须建立统一的时间服务系统,以获得可靠、确定的系统时间.从时间同步技术着手,分析了实时分布式系统中的传输延迟和容错策略,提出了时钟速率因子和'淡入淡出'时间调整方法,确定了同步周期.在具体的软硬件平台上,采用主从式时间同步化策略,实现了'机载实时分布式系统'中的时间同步,保证了系统实时、可靠、稳定地运行.
The real-time distributed system must establish the united time server system to realize the reliable and definitive system time. The propagation delay and the fault-tolerant in the real-time distributed system are analyzed. The clock speed rate factor and the arithmetic of ＂fade in, fade out＂ are provid- ed to determine the synchronization period. Using the strategy of master-servant, the time synchronization in the real-time distributed system in the airborne computer is realized with the software and hardware platform in practical. This way ensures that the system has the capacity of the real-time, reliability and stability.
出处
《中北大学学报（自然科学版）》
EI
CAS
2007年第5期412-416,共5页
Journal of North University of China(Natural Science Edition)
基金
国家863计划引导项目(2003AA001018)
航空科学基金资助项目(02F53031)
关键词
延迟
容错
时间同步
delay
fault tolerant
time synchronization
