In view of class imbalance in data-driven modeling for Prognostics and Health Management(PHM),existing classification methods may fail in generating effective fault prediction models for the on-board high-speed train ...In view of class imbalance in data-driven modeling for Prognostics and Health Management(PHM),existing classification methods may fail in generating effective fault prediction models for the on-board high-speed train control equipment.A virtual sample generation solution based on Generative Adversarial Network(GAN)is proposed to overcome this shortcoming.Aiming at augmenting the sample classes with the imbalanced data problem,the GAN-based virtual sample generation strategy is embedded into the establishment of fault prediction models.Under the PHM framework of the on-board train control system,the virtual sample generation principle and the detailed procedures are presented.With the enhanced class-balancing mechanism and the designed sample augmentation logic,the PHM scheme of the on-board train control equipment has powerful data condition adaptability and can effectively predict the fault probability and life cycle status.Practical data from a specific type of on-board train control system is employed for the validation of the presented solution.The comparative results indicate that GAN-based sample augmentation is capable of achieving a desirable sample balancing level and enhancing the performance of correspondingly derived fault prediction models for the Condition-based Maintenance(CBM)operations.展开更多
The article presents wide experience in controlling athletic training aimed at preparation of the Russian national teams for major international competitions. Experimental part of the study has been carried out in the...The article presents wide experience in controlling athletic training aimed at preparation of the Russian national teams for major international competitions. Experimental part of the study has been carried out in the course of training camps and competitions since 2010. Forty Russian national teams in 15 winter and 3 summer Olympic sports participated in the research. Theoretical concepts set forth in the works of Anthony Stafford Beer made a basis of a system of control and management developed for the Russian national winter sports teams. In particular, a five-level system was applied to control athletic training. The authors point out that a system of control over athletic training in elite sport teams should take into account a few important issues： （1） each sport, team and athlete has distinctive features; （2） various aspects of athletic training and their interrelation must be aimed at raising effectiveness of training according to individual training plans; （3） coaches and sport managers must be provided with real-time information necessary for development of long-term and short-term training plans and their timely correction.展开更多
列车网络控制系统(Train Control and Management System,TCMS)是利用网络技术将机车各控制设备连接在一起,设立主控设备,进行统一控制和信息共享,是机车的信息通信核心。HXD3CA型机车TCMS系统以东芝成熟的列车通信网络技术为基础,结合...列车网络控制系统(Train Control and Management System,TCMS)是利用网络技术将机车各控制设备连接在一起,设立主控设备,进行统一控制和信息共享,是机车的信息通信核心。HXD3CA型机车TCMS系统以东芝成熟的列车通信网络技术为基础,结合国际标准的列车通信网络(TCN)开发研制而成。HXD3CA型机车TCMS系统地面试验平台(以下简称TCMS试验平台)用于备品备件测试,岗位员工培训,故障现象再现。本文主要介绍了TCMS试验平台的构建过程和各种模拟器硬件实现方法。展开更多
在调度集中系统3.0(Centralized Traffic Control System 3.0,CTC3.0)推广使用过程中,对于接发车作业中的流程管理功能,因覆盖岗位多,需要通过多岗位联动来实现接发车作业流程的流转,尤为获得车站的关注与重视。通过分析车站运输生产过...在调度集中系统3.0(Centralized Traffic Control System 3.0,CTC3.0)推广使用过程中,对于接发车作业中的流程管理功能,因覆盖岗位多,需要通过多岗位联动来实现接发车作业流程的流转,尤为获得车站的关注与重视。通过分析车站运输生产过程中的接发车作业流程业务,结合CTC3.0作业流程管理功能,探讨一种基于无线专网的CTC3.0多岗位联动技术方案,以期在未来的实践中,实现CTC3.0车站接发车作业流程管理数字化,减轻车站人员的作业负担。展开更多
基金supported by National Natural Science Foundation of China(U2268206,T2222015)Beijing Natural Science Foundation(4232031)+1 种基金Key Fields Project of DEGP(2021ZDZX1110)Shenzhen Science and Technology Program(CJGJZD20220517141801004).
文摘In view of class imbalance in data-driven modeling for Prognostics and Health Management(PHM),existing classification methods may fail in generating effective fault prediction models for the on-board high-speed train control equipment.A virtual sample generation solution based on Generative Adversarial Network(GAN)is proposed to overcome this shortcoming.Aiming at augmenting the sample classes with the imbalanced data problem,the GAN-based virtual sample generation strategy is embedded into the establishment of fault prediction models.Under the PHM framework of the on-board train control system,the virtual sample generation principle and the detailed procedures are presented.With the enhanced class-balancing mechanism and the designed sample augmentation logic,the PHM scheme of the on-board train control equipment has powerful data condition adaptability and can effectively predict the fault probability and life cycle status.Practical data from a specific type of on-board train control system is employed for the validation of the presented solution.The comparative results indicate that GAN-based sample augmentation is capable of achieving a desirable sample balancing level and enhancing the performance of correspondingly derived fault prediction models for the Condition-based Maintenance(CBM)operations.
文摘The article presents wide experience in controlling athletic training aimed at preparation of the Russian national teams for major international competitions. Experimental part of the study has been carried out in the course of training camps and competitions since 2010. Forty Russian national teams in 15 winter and 3 summer Olympic sports participated in the research. Theoretical concepts set forth in the works of Anthony Stafford Beer made a basis of a system of control and management developed for the Russian national winter sports teams. In particular, a five-level system was applied to control athletic training. The authors point out that a system of control over athletic training in elite sport teams should take into account a few important issues： （1） each sport, team and athlete has distinctive features; （2） various aspects of athletic training and their interrelation must be aimed at raising effectiveness of training according to individual training plans; （3） coaches and sport managers must be provided with real-time information necessary for development of long-term and short-term training plans and their timely correction.
文摘列车网络控制系统(Train Control and Management System,TCMS)是利用网络技术将机车各控制设备连接在一起,设立主控设备,进行统一控制和信息共享,是机车的信息通信核心。HXD3CA型机车TCMS系统以东芝成熟的列车通信网络技术为基础,结合国际标准的列车通信网络(TCN)开发研制而成。HXD3CA型机车TCMS系统地面试验平台(以下简称TCMS试验平台)用于备品备件测试,岗位员工培训,故障现象再现。本文主要介绍了TCMS试验平台的构建过程和各种模拟器硬件实现方法。
文摘在调度集中系统3.0(Centralized Traffic Control System 3.0,CTC3.0)推广使用过程中,对于接发车作业中的流程管理功能,因覆盖岗位多,需要通过多岗位联动来实现接发车作业流程的流转,尤为获得车站的关注与重视。通过分析车站运输生产过程中的接发车作业流程业务,结合CTC3.0作业流程管理功能,探讨一种基于无线专网的CTC3.0多岗位联动技术方案,以期在未来的实践中,实现CTC3.0车站接发车作业流程管理数字化,减轻车站人员的作业负担。
