TTP总线在分布式飞控计算机系统中的应用  

Application of TTP in distributed flight control computer system

作　　者：刘帅[1] 马小博[1] 程俊强[1] Liu Shuai;Ma Xiaobo;Cheng Junqiang(Xi’an Aeronautics Computing Technique Research Institute,AVIC,Xi’an 710065,China)

机构地区：[1]航空工业西安航空计算技术研究所,陕西西安710065

出　　处：《无线互联科技》2020年第7期33-35,共3页Wireless Internet Technology

摘　　要：TTP总线具有高确定性、低时延、容错支持等优点,在构建有硬实时需求的安全关键分布式容错系统中有较大优势。文章简要总结了飞控计算机系统对系统总线的需求,介绍了TTP总线分布式时钟同步与确定性通信技术,分析了TTP总线容错特性与安全性,设计了基于TTP总线的三余度分布式飞控计算机系统,测试验证了系统中的TTP总线同步精度、通信延迟与抖动、TTP总线对飞控功能的支持等,能够满足飞控计算机系统的通信需求。The TTP has the advantages of high certainty, low time delay, fault-tolerant support, etc, which has great advantages in building a safety-critical distributed fault-tolerant system with hard real-time requirements. This paper briefly summarized the flight control computer system for the demand of the system bus, introduced distributed clock synchronization and deterministic communication technology of the TTP, and analyzed the safety and fault tolerance features of TTP, then designed a distributed flight control computer system based on TTP. Lastly we tested and verified synchronous precision, communication delay and jitter, support for flight control by TTP in the system, which can meet the demand of flight control computer system of communication.

关 键 词：时间触发协议 分布式 飞控计算机 容错 

分 类 号：V247[航空宇航科学与技术—飞行器设计]