Dynamic control of train interval based on real-time calibration of safe headway

PAN Deng; ZHENG Ying-ping

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PAN Deng, ZHENG Ying-ping. Dynamic control of train interval based on real-time calibration of safe headway[J]. Journal of Traffic and Transportation Engineering, 2014, 14(1): 112-118.

Citation:

PAN Deng, ZHENG Ying-ping. Dynamic control of train interval based on real-time calibration of safe headway[J]. Journal of Traffic and Transportation Engineering, 2014, 14(1): 112-118.

PAN Deng, ZHENG Ying-ping. Dynamic control of train interval based on real-time calibration of safe headway[J]. Journal of Traffic and Transportation Engineering, 2014, 14(1): 112-118.

Citation:

PAN Deng, ZHENG Ying-ping. Dynamic control of train interval based on real-time calibration of safe headway[J]. Journal of Traffic and Transportation Engineering, 2014, 14(1): 112-118.

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Dynamic control of train interval based on real-time calibration of safe headway

School of Electronic and Information Engineering, Tongji University, Shanghai 201804, China

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Author Bio:
PANDeng(1969-), male, lecturer, PhD, +86-21-69589241, pandengreal@sina.com
Received Date: 2013-09-07
Publish Date: 2014-02-25

Abstract

Abstract

The relationship between train interval and its following behavior was analyzed. When the steady-following state of high-speed train was broken, the dynamic control of train interval was described by using the formal modeling tool of Petri nets. For the CTCS-4 level train control system, a fitting function of the minimum safe headway changing with the current velocity of following train within the full-range velocity field was constructed by using numerical analysis method, and the constructed fitting function was used for the behavioral quality evaluation of following train. The dynamic control model of train interval was established based on the evaluation of train following behavior, and the model was simulated and verified. Simulation result indicates that during the period of train following system operating from a safe and efficient steady-following state with a velocity of 200 km·h^-1 and a train interval of 5 849.18 mto another steady-following state with a velocity of 380 km·h^-1, the dynamic control of train interval is accomplished well by the behavioral adjustment of following train, and the train interval is only 358.00 mlonger than the safe headway when a new steady-following state is realized at the velocity of 380 km·h^-1, which means that a new safe and efficient steady-following state is established. When the preceding train stops abruptly in emergency, under the action of control law, the following train takes a corresponding measure to reduce its own velocity for movement in safety, efficiency and smoothness until it stops completely. The simulation results verify the effectiveness and feasibility of control method for safe and efficient train following operation.
- train interval control,
- safe headway,
- train behavior adjustment,
- steady-following state,
- formal description,
- fitting function

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References(17)

References

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