摘要
提出了一种自监控二余度飞行控制计算机系统结构,并运用马尔科夫模型分析了系统的可靠性和安全性,描述了其结构特点和工作原理。讨论了本系统的余度管理关键技术,设计了在实时嵌入式操作系统VxWorks中,双机之间运用共享内存方式和共享信号量进行数据传输的方法,并且给出了设计流程和操作过程。采用了软硬件相结合的方式实现了系统的同步,这样的设计使得系统结构紧凑,可靠性和安全性得到了很大提高,方案切实可行。
The structure of self-monitoring dual redundancy flight cntrol computer systems is presented.Its reliability and safety by using Markor model are studied.The main theory and characteristic of structure are introduced.The synchronization scheme for channels,the data transmission scheme for channels about key techniques of redundant management in embedded real-time operating system VxWorks are designed.This structure makes progress quality and quantity of data transmission and lets the structure tight.And design diagram and operation mechanism examples are provided.
出处
《测控技术》
CSCD
2005年第7期72-75,共4页
Measurement & Control Technology
关键词
自监控
飞行控制计算机
共享内存
任务同步
self-monitoring
flight control computer
shared memory
synchronization scheme
