摘要
航空电子系统规模和功能复杂度的迅速增长,对时间触发以太网(TTE)的故障处理能力提出了更高要求。重构作为一种有效的故障处理手段,在航空电子系统中得到了越来越多的应用。针对航空电子时间触发以太网中端系统模块故障导致其上驻留应用失效的问题,首先,提出基于软件定义网络架构的重构管理策略;其次,引入端系统余量、资源供给能力等约束,提出基于可满足性模理论的故障恢复消息调度算法,并以链路负载均匀程度、速率约束消息最坏延迟等为指标,对抢占式重构方案进行评估;再次,基于遗传算法理论,提出了针对抢占式重构方案的优化选择算法;最后,仿真实验验证了消息调度算法的有效性,且经优化选择后的抢占式重构方案具有更好的性能。
Rapid development of scale and functional complexity of avionics system brings higher demands on fault tolerance and reliability of Time-Triggered Ethernet(TTE).As a significant measure of fault management,reconfiguration is widely used in avionics system.Aiming at application failure because of end system module failure in TTE,a reconfiguration management strategy based on software defined networking is proposed.Then,by introducing the constraints of end system margin and resource-supply ability,a message scheduling algorithm based on Satisfiability Modulo Theory(SMT)for fault recovery is presented.The uniformity of link load and worst delay of rate-constraint messages are taken as the indexes for evaluation of the preemptive reconfiguration scheme,and an optimization algorithm is designed based on genetic theory for selection of the preemptive reconfiguration scheme.Simulation experiment verifies the validity of the message scheduling algorithm,and shows that the preemptive reconfiguration scheme after optimization has better performance.
作者
高杨
李浩若
何锋
王彤
GAO Yang;LI Haoruo;HE Feng;WANG Tong(School of Electrical and Information Engineering,Beihang University,Beijing 100191,China)
出处
《电光与控制》
CSCD
北大核心
2020年第10期88-93,共6页
Electronics Optics & Control
关键词
时间触发以太网
软件定义网络
抢占式重构
重构方案选择
time-triggered Ethernet
software defined network
preemptive reconfiguration
reconfiguration plan selection
