Metro Train Braking Simulation Control System Based on EP2002 Braking System
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 1
Abstract
[Objective] To address the issue of the highly integrated internal structure of the EP2002 valve system, which hinders internal fault injection, a metro train braking simulation control system that accurately reflects the functioning mechanism of the EP2002 braking system is designed. The system is intended for fault simulation and personnel training in metro train braking systems. [Method] The air circuit structure and operating mechanism of the EP2002 valve system are introduced, and the overall scheme of the metro train braking simulation control system based on EP2002 is elaborated separately for the electrical and pneumatic components. Using AMESim simulation software, common and emergency braking experiments are conducted to simulate the air circuit of the EP2002 braking system and the metro train braking simulation control system respectively, and the consistency of their braking characteristics is verified. [Result & Conclusion] The overall scheme of the metro train braking simulation control system based on EP2002 utilizes basic air circuit components to construct an equivalent unit circuit with properties identical to the EP2002 valve. For the more complex parts of the air circuit, a mathematical model based on chamber air filling and venting is employed using time-stepping simulation in the software for equivalence. The control unit based on the STM32F107 microcontroller is used for monitoring and controlling the pneumatic section, as well as managing communication between various equivalent EP2002 valve units. The metro train braking simulation control system adopts networking structure similar to EP2002 braking system, with multiple equivalent EP2002 valve units interconnected through a CAN bus and vehicle bus to establish a braking simulation control system based on the EP2002 braking system, achieving cost-effective simulation of the entire train braking system. AMESim model simulation results indicate that the metro train braking simulation control system can maintain brake cylinder pressure at the target value with faster response speed and higher control precision, exhibiting external braking characteristics completely consistent with the EP2002 braking system.
Authors and Affiliations
Wenchuan ZHANG, Chenglian LANG
Keywords
Related Articles
- EP ID EP727730
- DOI 10.16037/j.1007-869x.2024.01.047
- Views 52
- Downloads 1
Shanghai Rail Transit Integration Development Strategy Based on Yangtze River Delta Integration
[Objective] With the deepening integration of regional development, it is essential to enhance the service level of urban rail transit, alleviate transportation pressure, and integrate regional resources. To achieve inte...
Research on Urban Rail Transit 5G Public-private Network Wireless Coverage Scheme
Objective The urban rail transit 5G public-private network (PPN) is a vertical application of 5G public network in urban rail transit industry, which differs significantly from the wireless coverage scheme of the 5G publ...
Research on Vibration Transmission Characteristics of Subway Vehicles Based on Vibration Transmissibility
［Objective］ To ensure that the vibration level of subway vehicles meets design standards during operation, it is necessary to evaluate the vibration isolation performance of subway vehicles using the vibration transmis...
Study on Stress and Deformation Mechanism of Side Pile and Middle Column for PBA Method Metro Station in Loess Area
[Objective] In order to ensure the stability of important vertical load-bearing components in the process of station construction with PBA (pile-beam-arch) method in loess area, it is necessary to study the stress and de...
Application of Distributed Photovoltaic Power Generation at Urban Rail Transit Station Entrances and Exits
Objective Based on the goals of carbon peak and carbon neutrality in China and the demand for green, low-carbon and sustainable development of urban rail transit, the feasibility of applying distributed photovoltaic powe...