Research on Skip Mode of Trains in Urban Rail Transit FAO System

[Objective] The FAO (fully automated operation) system must utilize a skip mode to correct train position deviations when precise stopping is not achieved. Due to differences in interface configurations between the signaling system and the train traction/braking system under this mode, there is a ri...

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Main Authors: YANG Liqiang, ZHANG Aiping
Format: Article
Language:Chinese
Published: Urban Mass Transit Magazine Press 2025-06-01
Series:Chengshi guidao jiaotong yanjiu
Subjects:
Online Access:https://umt1998.tongji.edu.cn/journal/paper/doi/10.16037/j.1007-869x.20241559.html
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author YANG Liqiang
ZHANG Aiping
author_facet YANG Liqiang
ZHANG Aiping
author_sort YANG Liqiang
collection DOAJ
description [Objective] The FAO (fully automated operation) system must utilize a skip mode to correct train position deviations when precise stopping is not achieved. Due to differences in interface configurations between the signaling system and the train traction/braking system under this mode, there is a risk of skip failure, necessitating dedicated in-depth research. [Method] Starting from the definition of train skip mode, the study analyzes its functional requirements. Using a FAO project in China as a case study, a comparative analysis is conducted between the existing and optimized schemes in terms of safety and availability. [Result & Conclusion] The optimized scheme distributes light braking force evenly to the second bogie of each car, thereby reducing the influence of static friction from the first bogie and mitigating its impact on the overall train braking force. Meanwhile, the scheme increases the traction level for train startup, ensuring—both through theoretical calculation and real-vehicle validation—that the train can successfully initiate movement under various conditions. This significantly enhances FAO system availability.
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spelling doaj-art-b8cc565b6e7149fa91f5724f29a2d3c32025-07-04T00:48:22ZzhoUrban Mass Transit Magazine PressChengshi guidao jiaotong yanjiu1007-869X2025-06-0128619319610.16037/j.1007-869x.20241559Research on Skip Mode of Trains in Urban Rail Transit FAO SystemYANG Liqiang0ZHANG Aiping1Xuzhou Metro Group Co., Ltd., 221018, Xuzhou, ChinaCRRC Nanjing Puzhen Co., Ltd., 210031, Nanjing, China[Objective] The FAO (fully automated operation) system must utilize a skip mode to correct train position deviations when precise stopping is not achieved. Due to differences in interface configurations between the signaling system and the train traction/braking system under this mode, there is a risk of skip failure, necessitating dedicated in-depth research. [Method] Starting from the definition of train skip mode, the study analyzes its functional requirements. Using a FAO project in China as a case study, a comparative analysis is conducted between the existing and optimized schemes in terms of safety and availability. [Result & Conclusion] The optimized scheme distributes light braking force evenly to the second bogie of each car, thereby reducing the influence of static friction from the first bogie and mitigating its impact on the overall train braking force. Meanwhile, the scheme increases the traction level for train startup, ensuring—both through theoretical calculation and real-vehicle validation—that the train can successfully initiate movement under various conditions. This significantly enhances FAO system availability.https://umt1998.tongji.edu.cn/journal/paper/doi/10.16037/j.1007-869x.20241559.htmlurban rail transitfao (fully automated operation)trainskip mode
spellingShingle YANG Liqiang
ZHANG Aiping
Research on Skip Mode of Trains in Urban Rail Transit FAO System
Chengshi guidao jiaotong yanjiu
urban rail transit
fao (fully automated operation)
train
skip mode
title Research on Skip Mode of Trains in Urban Rail Transit FAO System
title_full Research on Skip Mode of Trains in Urban Rail Transit FAO System
title_fullStr Research on Skip Mode of Trains in Urban Rail Transit FAO System
title_full_unstemmed Research on Skip Mode of Trains in Urban Rail Transit FAO System
title_short Research on Skip Mode of Trains in Urban Rail Transit FAO System
title_sort research on skip mode of trains in urban rail transit fao system
topic urban rail transit
fao (fully automated operation)
train
skip mode
url https://umt1998.tongji.edu.cn/journal/paper/doi/10.16037/j.1007-869x.20241559.html
work_keys_str_mv AT yangliqiang researchonskipmodeoftrainsinurbanrailtransitfaosystem
AT zhangaiping researchonskipmodeoftrainsinurbanrailtransitfaosystem