A study on optimization of starting strategy for metro trains based on traction and braking characteristics

WU Yunfei; LU Yuanji; MOU Rong; WANG Long; LIU Xiong

doi:10.13890/j.issn.1000-128X.2023.06.012

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A study on optimization of starting strategy for metro trains based on traction and braking characteristics

Electric Traction and Control | 更新时间：2024-08-02

- A study on optimization of starting strategy for metro trains based on traction and braking characteristics
- Electric Drive for Locomotives Issue 6, Pages: 99-105(2023)
- 作者机构：
  
  株洲中车时代电气股份有限公司，湖南株洲　　412001
- 作者简介：
- 基金信息：
- DOI：10.13890/j.issn.1000-128X.2023.06.012
  CLC： U231
- Published：10 November 2023，
  
  Received：26 June 2023，
  
  Revised：04 August 2023，
- 稿件说明：
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吴云飞, 陆远基, 牟蓉, 等. 基于牵引制动特性的地铁车辆启动策略优化研究[J]. 机车电传动, 2023(6): 99-105.

WU Yunfei, LU Yuanji, MOU Rong, et al. A study on optimization of starting strategy for metro trains based on traction and braking characteristics[J]. Electric drive for locomotives,2023(6): 99-105.
吴云飞, 陆远基, 牟蓉, 等. 基于牵引制动特性的地铁车辆启动策略优化研究[J]. 机车电传动, 2023(6): 99-105. DOI： 10.13890/j.issn.1000-128X.2023.06.012.

WU Yunfei, LU Yuanji, MOU Rong, et al. A study on optimization of starting strategy for metro trains based on traction and braking characteristics[J]. Electric drive for locomotives,2023(6): 99-105. DOI： 10.13890/j.issn.1000-128X.2023.06.012.

摘要

地铁车辆启动控制策略需确保车辆在全线路启动不发生后溜，并且启动冲击在满足不大于0.75 m/s

基础上尽可能小，启动时长尽可能短。文章基于现有整车牵引力达到一定阈值后需发送保持制动缓解指令的控制策略，根据车辆牵引制动特性参数提出了当牵引级位达到一定阈值时发送保持制动缓解指令的优化控制策略，通过建立车辆启动加速度模型与后溜时刻车辆受力模型求解发送保持制动缓解指令时刻的级位值。理论分析与现场测试结果表明，在满足车辆全线路启动不后溜的前提下，文章提出的优化策略使得车辆启动冲击明显降低，启动效率明显提升。该优化方案可为地铁车辆启动控制策略提供参考，根据不同的牵引制动特性可求解出不同的保持制动缓解指令发送时的级位阈值。

Abstract

It is necessary for the starting control strategy of metro trains to ensure that there will be no backward sliding when the train starts in the whole line

and that the starting impact is as small as possible and shall be not more than 0.75 m/s

and the starting time is as short as possible. Based on the existing control strategy that a train braking mitigation command should be sent when the train traction reaches a certain threshold

an optimized control strategy for sending such command was proposed when the traction reached a certain threshold according to the train traction brake characteristic parameters and worked out the level value when the train braking mitigation command was sent by crea

ting the starting acceleration model and the force model of the train at the time of backward sliding. The theoretical analysis and site test show that the optimized strategy proposed herein can significantly reduce the vehicle starting impact and improve the starting efficiency under the premise that the train will not slide backward when it starts in the whole line. This optimized strategy can be used as a reference for the starting control strategy of metro trains. According to the different traction brake characteristics

different level thresholds for the sending of holding brake mitigation command can be worked out.

关键词

地铁车辆启动控制牵引制动特性优化保持制动缓解

Keywords

metro trainsstarting controltraction brake characteristicsoptimizationbrake mitigation

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