一组1553B总线网络可靠性评估模型研究

Research on a Group of 1553B Bus Network Reliability Evaluation Models

摘要:

在工程中,数据网络结构往往决定了数据传输的网络可靠性；比如,若干节点的1553B总线可以设计为1个BC和多个RT的单层总线结构,也可以设计为双层BC-RT的总线结构；因此,如何比较这两种设计的网络可靠性高低成为关键问题；为了解决这一问题,文中以上述总线结构设计问题为切入点,结合容斥原理和总线网络结构的特点,提出一组网络可靠性评估模型,并通过这组模型对单层和双层1553B总线结构的网络可靠性进行评估、比较和分析,为工程中网络可靠性评估模型的选择和使用提供指导,为总线网络结构设计合理性的定量分析提供数据支撑,同时为网络可靠性设计要求的满足提供理论依据；最后,文中对总线设计网络可靠性问题研究的发展趋势进行讨论。

Abstract:

In engineering, network reliability of data communication is often determined by data network structure. For instance, 1553B bus with some nodes could be designed into a one-layer bus structure with a BC node and some RT nodes. It also could be designed into a two-layer BC-RT bus structure. Therefore, it is a crucial question that how could these two kinds of design be compared for network reliability. In order to solve this problem, this paper makes this problem of bus structure design as a breakthrough point, combines principle of inclusion-exclusion and bus structure characteristics, and provides a group of network reliability evaluation models which could be used to evaluate, compare and analyze network reliability of one-layer and two-layer 1553B bus structure. This paper could guide to choose and use network reliability evaluation models in engineering, give quantitative data support to reasonable data network structure design, and provide theoretical proof to satisfaction of network reliability design requirements. At last, the developing trends of bus design network reliability research will be discussed.