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High-Speed Railway Train Timetable Conflict Prediction Based on Fuzzy Temporal Knowledge Reasoning

Engineering 2016年第3期2卷 366-373页

作者： He Zhuang Liping Feng Chao Wen Qiyuan peng Qizhi Tang school of.transpfrtation anfl logistics S outhwestJiaotong University Chengclu 610031 China China Railway Corporation Beijing 100844. China National United Engineering Laboratory of Integrated and Intelligent Transportation SouthwestJiaotong University Chengdu 610031. China Depamnent of Civil and Environmental Engineering University of Waterloo. Waterloo N2L 3G I Canada

Trains are prone to delays and deviations from train operation plans during their operation because of internal or external disturbances. Delays may develop into operational conflicts between adjacent trains as a result of delay propagation, which may disturb the arrangement of the train operation plan and threaten the operational safety of trains. Therefore, reliable conflict prediction results can be valuable references for dispatchers in making more efficient train operation adjustments when conflicts occur. In contrast to the traditional approach to conflict prediction that involves introducing random disturbances, this study addresses the issue of the fuzzification of time intervals in a train timetable based on historical statistics and the modeling of a high-speed railway train timetable based on the concept of a timed Petri net. To measure conflict prediction results more comprehensively, we divided conflicts into potential conflicts and certain conflicts and defined the judgment conditions for both. Two evaluation indexes, one for the deviation of a single train and one for the possibility of conflicts between adjacent train operations, were developed using a formalized computation method. Based on the temporal fuzzy reasoning method, with some adjustment, a new conflict prediction method is proposed, and the results of a simulation example for two scenarios are presented. The results prove that conflict prediction after fuzzy processing of the time intervals of a train timetable is more reliable and practical and can provide helpful information for use in train operation adjustment, train timetable improvement, and other purposes.

关键词： High-speed railway Train timetable Conflict prediction Fuzzy temporal knowledge reasoning

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