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。
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.
出处
《计算机工程与科学》
CSCD
2007年第8期94-98,共5页
Computer Engineering & Science
基金
国家863计划资助项目(2002AA2041)
