AFDX网络关键协议分析与研究

摘要

AFDX 网络满足新一代航空电子系统主干网络通信的高实时性、高可靠性以及高带宽要求，其核心协议为ARINC664 Part7。该协议具有完整的体系结构，运用虚链路技术，满足了 AFDX 网络高实时性要求，采用余度容错机制，实现了 AFDX 网络的高可靠性。在 AFDX 网络综述的基础上，详细分析了端系统协议与交换机协议，其中端系统协议涉及到通信端口、余度容错、虚链路等关键技术，交换机协议包括了警管、过滤、交换调度等关键技术，为 AFDX网络关键协议芯片及后续产品的研制奠定理论基础。%AFDX network meets the requirement of new generation avionics system , which has high real time capability , high-relia-bility and high-band width . The core protocol of AFDX network is ARINC664 Part7 . The protocol has the fully system structure , the use of virtual link technology meets the requirements of high real time capability for the AFDX network , the redundant fault-tolerant mechanism is used to realize the high-reliability of AFDX network . This thesis analyzes end system and switch protocol in detail on the base of summarizing the AFDX network . The switch protocol includes key technology such as the police tube , filter and exchange of scheduling . It is the theoretics base for the design of AFDX network key protocol SoC and products .