综合模块化航电重构模型可靠性评估研究  

Research on Reliability Assessment of Integrated Modular Avionics Reconstruction Model

作　　者：郭强 王闯 许政 冯思宇 GUO Qiang;WANG Chuang;XU Zheng;FENG Si-yu(Airborne System Generic Technology Co.,Ltd.,AVIC,Yangzhou 225000,China)

机构地区：[1]中航机载系统共性技术有限公司,江苏扬州225000

出　　处：《航空计算技术》2021年第6期105-109,共5页Aeronautical Computing Technique

基　　金：装备技术基础科研项目资助(202ZX31006)。

摘　　要：为提升综合模块化航空电子(IMA)系统在民用航空领域的安全性和可靠性,IMA重构方案应运而生并得到了广泛的应用。为实现可重构IMA系统的可靠性评估,基于ASAAC标准中的系统管理概念,在Simulink/Stateflow环境下,搭建了IMA中惯导软件重构功能模型,直观展示了惯导软件重构过程的工作状态变化,从顶层验证了重构方案的设计实现。基于此,应用马尔可夫过程建立了Stateflow模型关联的可靠度数学模型,分析计算出可靠度结果,并结合工程实例,验证了重构手段对于可靠度的提升效果。To improve the safety and reliability of the integrated modular avionics(IMA)system in civil aviation,IMA reconstruction scheme was put forward and has been widely used.This paper aims to realize the reliability assessment of the reconstructible IMA system.A reconstruction functional model of inertial software in IMA was built by Simulink/Stateflow.This model is based on the system management concept in ASAAC standard.It can intuitively display the working status changes of inertial software during reconstruction process,which verifies the design implementation of the reconstruction scheme from the top level.Then,Markov process was applied to establish a reliability mathematical model associated with the Stateflow model,and the reliability results were derived.Further,an engineering example was introduced to verify the improved effect of reliability by reconstruction method.

关 键 词：STATEFLOW 马尔可夫过程 重构模型 可靠度模型 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]