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�������պ����ѧѧ�� 2011, Vol. 37 Issue (10) :1326-1332    DOI: CNKI:11-2625/V.20111013.1436.011
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AFDX modeling and simulation based on discrete event method
Huang Zhen, Zhang Yongtao, Xiong Huagang*
School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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ժҪ �����˽�ģ����ķ������������յ���ȫ˫������ʽ��̫��(AFDX,Avionics Full Duplex switched ethernet)Э��.ͨ����AFDXЭ��ij���,������ɢ�¼��Ľ�ģ����,�Ի���������Ԫ�������������еĶ�ϵͳ�����������豸,����ɢ�¼������������豸����Ϊ,�Դ˹�����AFDX����ģ��,������ģ��ʵ���˷���.����������һ�����ۼ���AFDX��ӳٽ��޵ķ���,�����ͳ����·���õ��Ľ�������ۼ���Ľ�����бȽ�,��֤��ģ��.ͨ����ͬ���������·������ĶԱ�,��AFDX�����˴������Եķ���.
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Abstract�� For dimensioning avionics full duplex switched ethernet (AFDX) network, discrete event method was used. Devices in the network, such as end-system and switch, were modeled by the basic network elements. The communication behavior including VL control, message framing and switch forwarding etc. was described as discrete event. Different network elements were integrated by these events, and a model of the network was composed. Based on AFDX modeling, the simulation tool was developed with C+ +. Typical AFDX network topology was used to verify the model. The simulation was verified by comparison with the theory calculus which is called network calculus. The result indicated that the modeling and simulation were reliable. Two simulation scenes with different network flow were used to analyzing the performance of AFDX. According to the simulation analysis, irregular flow generated by either end-system or switches was isolated by VL, so that it cannot take effect on the regular flow. The reliability of AFDX was verified.
Keywords�� avionics full duplex switched ethernet (AFDX)   discrete event   modelling   simulation     
Received 2010-09-26;


About author: �� ��(1982-),��,�Ĵ��ڽ���,��ʿ��,huangzhen@ee.buaa.edu.cn.
����, ������, �ܻ���.������ɢ�¼�������AFDX��ģ�����[J]  �������պ����ѧѧ��, 2011,V37(10): 1326-1332
Huang Zhen, Zhang Yongtao, Xiong Huagang.AFDX modeling and simulation based on discrete event method[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2011,V37(10): 1326-1332
http://bhxb.buaa.edu.cn//CN/CNKI:11-2625/V.20111013.1436.011     ��     http://bhxb.buaa.edu.cn//CN/Y2011/V37/I10/1326
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