| 摘要: |
| 为研究三模冗余演化自修复系统可靠性及状态规律，首先给出了系统架构及其工作
流程，继而以马尔科夫(Markov)过程理论为基础对其进行了可靠性建模，最后基于此模型对
系统可靠
性及状态规律进行了仿真研究。结果表明：修复率与故障率比值是影响系统可靠性的
主要因素；系统运作区间以可用度与可靠度差值的极值分为两大部分,极值点前，系
统主要处于状态0、1，演化修复作用对系统可靠性贡献不大；极值点后，系统在状态1、2间
转换概率提高，演化修复作用成为提高系统可靠性主要因素。所得结论对特定环境中系统的
设计、应用、评估具有一定的理论指导意义。 |
| 关键词: 电子系统 容错技术 三模冗余 演化硬件 自修复 马尔科夫
模型 可靠性 |
| DOI： |
|
| 基金项目: |
|
| Reliability and State Characteristic Analysis of Evolvable Triple Module Redundancy Self-repairing System |
| JU Zheng-quan,ZHENG Jian-ling,MAN Meng-hua,CHANG Xiao-long |
| () |
| Abstract: |
| This paper investigates the reliability and state characteristic of
the evolvable triple module redundancy self-repairing system. Firstly, the arch
itecture and workflow of the system are proposed. Secondly, its reliability mode
l is established based on Markov′s course theory. Finally, simulation experimen
t
s are carried out to study the reliability and state characteristic. As sh
own in the results, the ratio of repair rate and fault rate is the most importan
t influencing factor. The operation interval of the system is divided into two p
arts by the extreme difference between the availability degree and reliability d
egree. In the former part, the system is working at state 0 and state 1. And the
contribution of self-repairing mechanism has little effect. In the latter, the
probability of the transformation between state 1 and state 2 is increased. And
the self-repairing mechanism is the main factor for the reliability. The conclus
ions provide guidance for the design, application and evaluation of the system i
n such specific environment. |
| Key words: electronic system error tolerance triple module redundancy evolvable hardware self-repair Markov model reliabi
lity |
