Abstract
With the rapid development of aviation technology, the avionics full duplex switched Ethernet (AFDX) has replaced the traditional avionics transmission bus standards, becoming a new generation of airborne equipment network, which is a major upgrade of civil aircraft integrated avionics system. Because it is difficult to test the real-time and certainty of AFDX network online, it is necessary to study the method of network simulation. This paper establishes the simulation models of AFDX end system, switch and virtual link based on the rate-constrained traffic of TTEthernet in OMNeT++ simulation platform. On the basis of analyzing the functional requirements of different parts and combining with the OMNeT++ platform, the evaluation method of AFDX network simulation is studied emphatically.The influence factors of end-to-end delay of AFDX network are determined by multi-group simulation experiments and on-board function tests. The accuracy of simulation model and the correctness of ARINC664 engineering data analysis based on interface control document (ICD) are verified.
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