摘要
AFDX具有传输速率高、导线长度和重量小、容易映射ARINC429和MIL-STD-1553等优势,且应用商用货架技术和开放式标准,是下一代航空数据网络的最佳选择之一;协议栈是AFDX端系统设计的重点,协议栈的虚链路层包含了AFDX为消除网络的不确定性,对商用以太网进行改进而加入的新功能,是协议栈设计的关键;本文对AFDX协议栈的虚链路层进行了研究,给出了它的一种设计并使用FPGA对其进行了实现;在端系统研制中的应用表明,本文的研究实现了虚链路层的功能,并达到了AFDX标准的要求。
So many advantages, such as high transmission speed, less wire length and weight, easily map to ARINC429 and MIL STD- 1553, also application of COTS （Commercial Off-The-Shelf） technology and open standards, make AFDX become one of best choices of next generation aviation data network. Protocol stack is the key point of AFDX end system design. Virtual Link layer, which contains all the new features added to commercial Ethernet to eliminate its uncertainty, is a key of protocol stack design. Study of virtual link layer in AFDX protocol stack is carried out, a design is given, also the implementation based on FPGA is achieved. Application of the design in AFDX end system development shows that the study achieved virtual link layer＇ s functions and meet the requirements of AFDX standard.
出处
《计算机测量与控制》
CSCD
北大核心
2010年第1期157-160,共4页
Computer Measurement &Control
基金
国防基础科研项目(B2720060300)
航空科学基金(2008ZD53035)
陕西省自然科学基金资助项目(SJ08F20)
