The Design And Implementation Of Semi-Physical Simulation Platform Of Train On-Board Control Network

As one of the key parts of the rail transit vehicle,Train On-board Network Control System which is responsible for the control,diagnostic and shared monitoring information of the train is an indispensable part for train operation.However,the technology of train network control of our country has been dependent on foreign countries.In recent years,some research laboratory,carriage works and colleges are in the study of network control system,but as the technical barriers to foreign manufactures,there is a long way to go before we put our study of network control system into a wide application.So it is necessary to do hardware-in-the-loop simulation of train on-board network control system for providing reference for the developments of train on-board network control system and shortening the development time.This paper uses a hardware-in-the-loop simulation scheme with master unit hardware and virtual controlled subsystem simulation module to design and implement the semi-physical simulation platform of the train on-board control network system.The platform includes the master unit,communication network and controlled subsystem.The master unit is formed by the hardware equipments of VCU and RIOM which meets the requirements of real vehicle.With a target of implementing the traction control function,brake control function and door control function of the vehicle,the train control logic software is divided into four parts as traction control module,brake control module,electronic door control module and train operation control module,the logic relationship between each module has been analyzed,designed and implemented according to different control function and programmed by configuration programming software which meets IEC61131 standard.The MVB which has been widely used in rail transit field and the Ethernet networks that represents future developments direction have been chosen in the communication network part as the BA bus of the platform.This paper studys the application for train on-board control network of these two communication network and implements the MVB communication among VCU and virtual DCU,virtual BCU and virtual EDCU,the Ethernet Communication between virtual vehicle visual simulation module and the modules given before.The controlled subsystem is composed of virtual DCU,virtual BCU,virtual EDCU and the virtual vehicle visual simulation module,the MFC is taken as developing environment to design and implement the simulation of controlled subsystem according to functional requirements with the target to achieve the effect of function simulation and visualization operation.The test results after system integration shows that the platform has achieved the design of all function like traction control,brake control and door control.The platform runs stably and has the authenticity and extensibility which could provide the developing and testing environment of train control logic software and train on-board equipments.