scholarly journals A Proposal of Train Operation Control System of Railway Bridges Considering Natural Frequency of Piers Under Floods.

2001 ◽  
pp. 79-89
Author(s):  
Masaki SEKI ◽  
Hiromasa TANAKA ◽  
Yoji TSUTSUMI ◽  
Kazutoshi YAMASHITA ◽  
Satoshi NAKANO ◽  
...  
Keyword(s):  
Control System ◽  
Natural Frequency ◽  
Railway Bridges ◽  
Train Operation ◽  
Operation Control

Reliability analysis on the train control system in the CTCS-3 operating mode

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Lijuan Shi ◽  
Jian Wang
Keyword(s):  
Control System ◽  
High Speed ◽  
Fault Tree ◽  
Operating Mode ◽  
Content Type ◽  
Train Control ◽  
Dynamic Fault Tree ◽  
Train Control System ◽  
Train Operation ◽  
Operation Control

Purpose This paper aims to study the reliability of the high-speed train operation control system in the Chinese Train Control System Level 3 (CTCS-3) operating mode. Design/methodology/approach Dynamic fault tree and Bayesian network method are adopted to analyze the reliability and weakness of the CTCS-3 system. Findings First, a physical architecture and data flow diagram of the CTCS-3 system are established according to the typical structure and functions of the CTCS-3 system. Second, the dynamic fault tree of the CTCS-3 system is constructed. Considering the prior probability of the bottom event and the existence of dynamic redundancy, the dynamic fault tree is transformed into a Bayesian net. The reliability of the CTCS-3 system is carried out based on the prior probability and the weakness that affects the reliability of the system based on the posterior probability is also analyzed by the Bayesian network. Finally, it is disclosed that the impact of the on-board subsystem on the reliability of the CTCS-3 system is generally greater than that of the ground subsystem. The two weakest modules in the onboard subsystem are the driver-machine interface (DMI) and balise transmission module (BTM) and the weakest one in the ground subsystem is Balise. The analysis results are generally consistent with the malfunctions in the field operation of China’s high-speed railway. Originality/value (1) By reasoning, the reliability of the train operation control system in the CTCS-3 operating mode meets the standard requirements. (2) Through backward reasoning, it is found that the failure of the onboard subsystem leads to a greater probability of failure of the train control system. (3) The DMI, BTM and automatic train protection computer unit modules are weak components in the onboard subsystem. Vital digit input&output, train interface unit and train security gateway are rarely involved in previous research, the result in this paper shows that these three modules are also weak components in the subsystem, which requires attention.

Train Safety Control System for SHINKANSEN—CPU System With Priority on Safety

1975 ◽  
Vol 97 (2) ◽  
pp. 146-148
Author(s):  
Norio Kataoka
Keyword(s):  
Control System ◽  
Traffic Control ◽  
Fundamental Idea ◽  
Safety Control ◽  
Railway Line ◽  
Train Operation ◽  
Operation Control ◽  
Train Safety ◽  
Centralized System

For 10 years since its opening SHINKANSEN, Japan’s 210 km/hr railway line, has carried 700 million passengers with a perfect safety record. Train operation safety depends on the working of local devices, while overall traffic control is maintained by a centralized system with a computer to aid the dispatchers. The local devices for safety control have an extremely high failsafe function which rejects any mistaken order from the center, when it judges that said order conflicts with the safety. The present paper describes the fundamental idea behind this highly reliable train operation control system.

ACCURACY EVALUATION OF PREDICTING TIMES OF ISSUES OF THE TRAIN OPERATION CONTROL USING RAINFALL FORECAST INFORMATION

2019 ◽  
Vol 75 (2) ◽  
pp. I_121-I_126
Author(s):  
Yohei NAKABUCHI ◽  
Hiroto SUZUKI ◽  
Chiho KIMPARA ◽  
Satoru ENDO ◽  
Eiichi NAKAKITA
Keyword(s):  
Accuracy Evaluation ◽  
Rainfall Forecast ◽  
Train Operation ◽  
Operation Control
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