| The demands of aviation rapidly growth these years,as well as requirements on aircraft.Safety and comfortable planes need more avionics systems to achieve which raise the standard of the avionics databus.Intensive study has a great meaning for the development of avionics databus.This paper focuses on the simulation of avionics databus,accomplishing the model establishment,system achievement and verification of avionics system AFDX simulation platform.This paper successfully proves the feasibility of software simulation on ARINC 664 P7.The paper focuses on researches as below:Firstly,the paper discusses the history and status in avionics databus,works on the characteristic of avionics databus in current market,and points out AFDX has the best prospect.As the study on AFDX has just begun in and abroad,an early study has a significant meaning on development of avionics databus.Secondly,this paper studies on the characteristic of AFDX communication behavior and find out the fundamental elements on simulation.Thirdly,the paper analyzes on demand of the system and accomplishes the designing of the main framework of system.The system designs base on Fedora operating system,architecture and implement under C language.The system is composed by modules such as database,main part of the simulation,data transmission and data reception.The system also provides log module to record the status of simulation platform.Fourthly,the paper implements the avionics databus AFDX simulation platform.The paper design and implement the data base module,main part module,data transmission and data reception module.Simulation can be achieved under alterable network topology.Fifthly,the paper validates the function and performance of the simulation platform.The simulation of AFDX under commercial software is possible. |
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