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http://dx.doi.org/10.7782/JKSR.2015.18.5.419

Study of an Optimal Control Algorithm for Train Interval Under Disturbance  

Kim, Kiwoong (Department of Operation Control Center, Seoul Line9 Operation Co. Ltd.)
Lee, Jongwoo (Department of Railroad Electrical and Signaling Engineering, Graduate School of Railroad, Seoul National University of Science and Technology)
Park, Minkee (Department of Electronic and IT Media Engineering, Seoul National University of Science and Technology)
Publication Information
Journal of the Korean Society for Railway / v.18, no.5, 2015 , pp. 419-425 More about this Journal
Abstract
When a train is delayed because of a disturbance, the time interval between successive trains increases and high-frequency metro lines can become unstable. Time interval control is therefore necessary in preventing such instabilities. In this paper, we propose an optimal interval control algorithm that is easy-to-implement and that guarantees system stability. In the proposed method, the controlled trains are determined from the time interval deviations between successive trains; the control algorithm for staying time is designed by use of a discrete traffic model to ensure an optimal time interval between successive trains. The results of a computer simulation are also given to demonstrate the validity of the proposed algorithm.
Keywords
Train traffic control; Train interval control; Traffic model; Traffic regulation;
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