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故障容错光交叉通道数据链路可靠性研究

王新华1,甄子洋1,龚华军2,杨一栋1   

  1. 1. 南京航空航天大学
    2. 南京航空航天大学自动化学院
  • 收稿日期:2010-12-08 修回日期:2011-03-24 发布日期:2011-03-25
  • 通讯作者: 王新华

Study on reliability of fault tolerant optical cross-channel data link

  • Received:2010-12-08 Revised:2011-03-24 Published:2011-03-25
  • Contact: WANG Xin-hua

摘要: 光交叉通道数据链路(Optical Cross-Channel Data Link,OCCDL)是光传飞行控制系统余度计算机之间进行数据交换的重要途径。为了提高OCCDL系统的可靠性,设计了一种新的具有多链路故障容错能力的OCCDL系统。给出了该OCCDL系统的结构配置,分析了其关键组成部件的功能原理和故障容错逻辑,建立了基于马尔可夫链的OCCDL系统可靠性模型。仿真结果表明,与传统数据链路系统相比,该OCCDL系统的可靠度和稳定度均得到了显著提高,并且具有良好的实时性和工程实用性等特点。

关键词: 光传操纵, 光交叉通道数据链路, 可靠性, 马尔可夫链, 容错逻辑

Abstract: Optical cross-channel data link (OCCDL) is an important method for data exchange between fly-by-light redundancy flight control computers. In order to improve the reliability of OCCDL system, a new OCCDL system with multi-link faults tolerant capability is designed. The structure of the OCCDL is given, the operating principle and fault-tolerant logical algorithm of its main component parts are studied, and a Markov reliability mathematic model of OCCDL system is established. The simulation results show that the reliability and stability of OCCDL system are significantly improved. Moreover, the OCCDL system has the traits of real-time and practicality.