Earticle

초록

영어

China Train Control System (CTCS-3) is a safety critical computer system that features large-scale, complex structure, and redundant configuration. CTCS-3 and as well as the equipment and technologies related to it can ensure the safety and reliability running of high-speed trains, and so the assessment on its reliability becomes very important. Generally, the two elements such as common cause factor (CCF) and failure mode polymorphism can not be ignored when assessing the reliability on a large complicated system. There are some limitations existing when applying the traditional fault tree analysis (FTA) is used to deal with the two factors mentioned above, and considering that Bayesian network (BN) possesses the abilities of bidirectional reasoning and the uncertain knowledge solving, and therefore BN is introduced to change the flaws. The method firstly establishes the FTA model of system from top to bottom, and then converts the FTA model into BN model from the lower to the upper, hierarchically. Eventually, the reliability indices are calculated using the BN with regard to the CCF and multi-state factors. Through integrating and evaluating sub-models using the approach with FTA combined with BN in the CTCS-3 system, some interesting results are acquired. The relative results show that the proposed approach is quite effective, and also provides a theoretical basis to improve the system reliability.

목차

Abstract
 1. Introduction
 2. CTCS-3 train control system and fault tree model
  2.1. CTCS-3 train control system
  2.2. CTCS-3 train control system fault tree model
 3. Theory of Bayesian Networks
  3.1. Architecture of Bayesian Networks
  3.2. BN nature in reliability
  3.3. Mapping fault trees to Bayesian Networks
 4. Reliability modeling methods on CCF and MSS in BN
  4.1. Reliability model of common cause failure in BN
  4.2. Reliability model of multi-state system in BN
 5. Reliability modeling of CTCS-3 train control system based on BN
  5.1. Reliability calculation of the root node considering CCF
  5.2. Reliability Assessment of intermediate node by example of the VC subsystem
  5.3. Reliability Assessment of CTCS-3 Train Control System
 6. Conclusion
 Acknowledgements
 References

키워드

저자

• Hongsheng Su [ School of Automation and Electrical Engineering, Lanzhou Jiaotong University ]
• Yulong Che [ School of Automation and Electrical Engineering, Lanzhou Jiaotong University ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Control and Automation

• 간기

  월간

• pISSN

  2005-4297

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605