Towards modeling and evaluation of availability of communication based train control (CBTC) system

• Published in: 2009 IEEE International Conference on Communication Technology and Applications pp. 860 - 863
• Main Authors: Hongli Zhao, Tianhua Xu, Tao Tang
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.10.2009
• Subjects: Automatic control; Automation; Availability; Communication Based Train Control system (CBTC); Communication system control; Computer networks; Control system synthesis; Propagation losses; Radio communication; Radio control; scaled generalized minimum residual (SGMRES); state-space explosion; Stochastic Automata Networks (SANs); Stochastic systems
• ISBN: 1424448166; 9781424448166
• DOI: 10.1109/ICCOMTA.2009.5349076

This In this paper a stochastic automation networks (SANs) model for the computing the availability of communication based train control (CBTC) system is developed, which captures the lossy radio communication link and the transmission procedures based on 802.11 protocols. A scaled generalized minimum residual (SGMRES) iterative method is provided to reduce the ill-condition of steady-state equation and the state-space explosion problem. The availability (mean time between train stop, MTBTS) of CBTC is quantitatively evaluated and compared under different deadlines and time between two successive train position reports. Analytic results are conducted to verify that the required mean time between train stop (MTBTS) of 250,000 hours is met at the deadline of 2 minutes.