摘要
重载列车空气制动特性复杂、机车车辆耦合受力多变,且列车状态感知能力有限,导致其在长大坡道运行时控制难度较大。针对该问题,文章开展了长大坡道时变环境下的安全调控技术研究。首先,研究建立了面向长大坡道关键场景的列车纵向动力学模型、空气制动物理模型及安全平稳评价方法,其中采用车钩疲劳指标表征列车全局运行安全性,基于Sperling指标评价列车车辆平稳性;然后,结合提出的安全平稳评价方法,制定了重载列车在长大坡道下的安全平稳操纵策略,并开发了融入该策略的自动驾驶系统规划与控制算法;最后,在某重载铁路线上开展策略验证,结果表明,文章提出的相关技术可有效提升重载列车在长大坡道运行的安全性与平稳性。
Complex air-braking characteristics of heavy-duty trains,stress variations arising from interactions between coupled locomotive and wagons,and limited train state perception capabilities together create considerable control challenges during train operation on long and steep gradients.To address these challenges,this paper explores safety-oriented regulation and control techniques for time-varying environments on such slopes.Firstly,a longitudinal train dynamics model and a physical model of air braking were established for key scenarios related to long and steep slopes,along with a safety and stability evaluation framework that utilizes the coupler fatigue index to represent the global train operation safety and the Sperling index to evaluate operating stability.Secondly,based on this evaluation approach,a control strategy for safety and stability of heavy-haul trains on long and steep slopes was formulated,and an automatic operation system planning and control algorithm implementing this strategy was developed.Finally,the strategy was verified on a heavy-haul railway.Results show that the proposed techniques effectively improve the safety and stability of heavy-duty trains operating on long and steep slopes.
作者
江帆
李凯
刘颖南
JIANG Fan;LI Kai;LIU Yingnan(Zhuzhou CRRC Times Electric Co.,Ltd.,Zhuzhou,Hunan 412001,China)
出处
《机车电传动》
2025年第5期41-51,共11页
Electric Drive for Locomotives
基金
中国中车科技研究开发计划重点项目(2022CTB143)
中国国家铁路集团有限公司科技研究开发计划重大课题(SY2023J002)。
关键词
重载列车
长大坡道
安全调控
纵向动力学
自动驾驶
运行平稳性
重载铁路
仿真
heavy-duty train
long and steep slope
safety-oriented regulation and control
longitudinal dynamics
automatic operation
operating stability
heavy-haul railway
simulation
