Integrated reliability theory and evaluation methodology ofAFDX
This paper focuses on the fault-tolerant operation mechanism and failure mechanism of Avionics Full Duplex Switched Ethernet (AFDX). With the strong correlation among airborne systems, fault tolerance mechanism of full duplex communication and dynamic adjustment strategy, this paper presents an integrated reliability theory and evaluation methodology based on service performance and fault tolerant degradation. In order to describe the correlation among hardware, software and protocol, stochastic Petri network is utilized to establish their reliability model based on failure coverage rate. Directing to the sudden traffic variance under failures, this paper presents an optimal threshold traffic model based on sudden traffic and steady traffic, in which the particle swarm algorithm will be used to get the optimization threshold. With the control theory, this paper will design the nonlinear robust resources controller to adjust the buffer size dynamically. Selecting the time delay as service performance, G/M/1 queuing model is explicated to analyze the traffic shaping and the network calculus algorithm is used to get the maximum network time delay. Combing the time delay of traffic shaping and adjustment, the service-oriented integrated reliability model of AFDX is presented based on time delay and structure reliability to realize the reliability evaluation for airborne network — AFDX of commercial airplane.
AFDX network traffic time delay traffic shaping integrated reliability
Kang Wang Shaoping Wang Jian Shi
Beihang University School of Automation Science and Electrical Engineering, Beihang University Beiji Beihang University School of Automation Science and Electrical Engineering, Beihang University Beiji
国际会议
IEEE 10th International Conference on Industrial Informatics(第十届IEEE工业信息学国际学术会议 INDIN2012)
北京
英文
657-662
2012-07-25（万方平台首次上网日期，不代表论文的发表时间）