TY - JOUR
T1 - Reliability analysis of CTCS-1 ATP based on enhancedBayesian network
AU - Liu, Zhongtian
AU - Xu, Yue
AU - Wang, Hao
N1 - Publisher Copyright:
© 2017, Editorial Department of Journal of Beijing Jiaotong University. All right reserved.
PY - 2017/10/1
Y1 - 2017/10/1
N2 - China Railway Corporation has proposed the development requirements of CTCS-1 train control system based on design and application experience of CTCS-2 and CTCS-3 train control system. The vehicle ATP equipment in this system will replace LKJ and cab signal controlling the existing railway line. CTCS-1 ATP equipment is studied in this paper and comparative analysis of reliability of CTCS-1 ATP system is conducted between modular and system redundancy. Firstly, CTCS-1 ATP reliability block diagrams are established according to the integral technical scheme of CTCS-1 train control system. Correspondingly, the enhanced Bayesian network model is set up. Secondly, the quantitative reliability indexes of CTCS-1 ATP on the foundation of modular and system redundancy are obtained through forward reasoning of enhanced Bayesian network, then the advantages and disadvantages of these two designs are evaluated. Finally, the basic unit conditional failure probability of ATP equipment is obtained through the backward reasoning of enhanced Bayesian network, and the potential weak links of two redundancy designs are found out. The evaluation results show that the RAM indexes of CTCS-1 ATP under the condition of two redundancy designs can meet the requirements of Chinese train control system requirement specifications, but the RAM indicators of CTCS-1 ATP applying the modular redundancy design are better than those using the system redundancy design; and the conditional failure rate of peripheral cold standby module is higher than other modules, which is the weak link of CTCS-1 ATP.
AB - China Railway Corporation has proposed the development requirements of CTCS-1 train control system based on design and application experience of CTCS-2 and CTCS-3 train control system. The vehicle ATP equipment in this system will replace LKJ and cab signal controlling the existing railway line. CTCS-1 ATP equipment is studied in this paper and comparative analysis of reliability of CTCS-1 ATP system is conducted between modular and system redundancy. Firstly, CTCS-1 ATP reliability block diagrams are established according to the integral technical scheme of CTCS-1 train control system. Correspondingly, the enhanced Bayesian network model is set up. Secondly, the quantitative reliability indexes of CTCS-1 ATP on the foundation of modular and system redundancy are obtained through forward reasoning of enhanced Bayesian network, then the advantages and disadvantages of these two designs are evaluated. Finally, the basic unit conditional failure probability of ATP equipment is obtained through the backward reasoning of enhanced Bayesian network, and the potential weak links of two redundancy designs are found out. The evaluation results show that the RAM indexes of CTCS-1 ATP under the condition of two redundancy designs can meet the requirements of Chinese train control system requirement specifications, but the RAM indicators of CTCS-1 ATP applying the modular redundancy design are better than those using the system redundancy design; and the conditional failure rate of peripheral cold standby module is higher than other modules, which is the weak link of CTCS-1 ATP.
KW - ATP
KW - CTCS-1
KW - Enhanced Bayesian network
KW - RAM
KW - Train running automation
UR - https://www.scopus.com/pages/publications/85040181031
U2 - 10.11860/j.issn.1673-0291.2017.05.009
DO - 10.11860/j.issn.1673-0291.2017.05.009
M3 - 文章
AN - SCOPUS:85040181031
SN - 1673-0291
VL - 41
SP - 58
EP - 65
JO - Beijing Jiaotong Daxue Xuebao/Journal of Beijing Jiaotong University
JF - Beijing Jiaotong Daxue Xuebao/Journal of Beijing Jiaotong University
IS - 5
ER -