基于Copula的ERCS系统软硬件综合可靠性建模与分析

计算机科学 ›› 2014, Vol. 41 ›› Issue (4): 145-149.

基于Copula的ERCS系统软硬件综合可靠性建模与分析

郭荣佐

四川师范大学计算机科学学院成都610068

出版日期:2018-11-14 发布日期:2018-11-14
基金资助:
本文受四川省教育厅自然科学重点项目:嵌入式实时控制系统可靠性保障技术及策略研究(10ZA008)资助

Integrated Reliability Modeling and Analysis of Hardware/Software of ERCS System Based on Copulas

GUO Rong-zuo

Online:2018-11-14 Published:2018-11-14

摘要/Abstract

摘要： 在现代的电子业、制造业和工业控制等系统中,系统的可靠性越来越重要,而嵌入式实时控制系统(Embedded Real-time Control System,ERCS)大部分是控制系统的核心部分,其系统可靠性尤为重要。首先对嵌入式实时控制系统软硬件进行形式化抽象定义；然后对不可再分的软件模块和IP硬核进行可靠性建模,应用Copula函数对软件子系统和硬件子系统分别进行建模,并建立了ERCS系统的软硬件综合可靠性Copula模型；最后应用建立的模型,对具体的系统进行了软硬件综合可靠性计算。通过实例计算可知,用Copula建立的ERCS软硬件综合可靠性模型考虑了软件各个模块间、硬件各个IP硬核间和软硬件间的相依性,使得ERCS软硬件综合可靠性比独立时有所提高。

关键词: Copula函数,可靠性,建模与分析,嵌入式实时控制系统,软硬件

Abstract: The reliability of a system employs an increasing important issue in modern day electronic,manufacturing and industrial systems,and most of the control systems are the core part of Embedded Real-time Control System(ERCS),and the system reliability is especially important．At first,formalization of the hardware/software of ERCS was defined．Then,reliability modeling was given for software modules which can not be subdivided and for IP hardcore.The reliabi-lity modeling of hardware/software of ERCS was also provided by applying Copula function．The integrated reliability modeling of software and hardware of ERCS was also established by applying Copula function．The reliability of specific system hardware/software was calculated by using the model．The results show that the reliability model established with Copula function takes account of the correlation between software modules,IP hardcore and hardware/software,therefore the integrated reliability of hardware/software of ERCS is improved compared with the independent hardware and software.

Key words: Copula function,Reliability,Modelling and analysis,Embedded real-time control system,Hardware/software

郭荣佐. 基于Copula的ERCS系统软硬件综合可靠性建模与分析[J]. 计算机科学, 2014, 41(4): 145-149. https://doi.org/

GUO Rong-zuo. Integrated Reliability Modeling and Analysis of Hardware/Software of ERCS System Based on Copulas[J]. Computer Science, 2014, 41(4): 145-149. https://doi.org/

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