• 中国计算机学会会刊
  • 中国科技核心期刊
  • 中文核心期刊

J4 ›› 2007, Vol. 29 ›› Issue (8): 94-98.

• 论文 • 上一篇    下一篇

基于RTEMS的软件容错系统设计研究

孙鹏[1,2] 赵军锁[2] 张文君[2]   

  • 出版日期:2007-08-01 发布日期:2010-06-02

  • Online:2007-08-01 Published:2010-06-02

摘要:

运行于空间环境中的计算机系统,受空间辐射的影响,可能会发生各种各样的错误。为了提高系统可靠性,需要对其进行容错。在本文中,首先分析RTEMS本身的特点和空间 环境的特点;然后在此基础上提出基于RTEMS的软件容错系统的分层设计思想,并给出具体的层次设计过程;最后结合模拟实验验证给出容错状态下系统的性能分析。实验结
果表明,对容错系统的分层设计是必要的。

关键词: RTEMS软件容错 可靠性 硬实时 单粒子翻转 单粒子锁闭

Abstract:

Computer systems used in the space environment need some fault-tolerant mechanisms to enhance their reliability. This paper starts with the feature of RTEMS and an analysis of the space environment. Then it gives the layered design of a RTEMS-based software fault-tolerant system. Finally it offers the analysis of the fault-tolerance system as well as its test verification. It is quite necessary to design the system as a layered fault-tolerant system

Key words: (RTEMS, software fault-tolerance, reliability, hard real-time, SEU, SEL)