Control Technology for Anti-skid Protection in Urban Rail Transit Vehicles
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 2
Abstract
[Objective] Anti-skid protection control technology is a crucial technology for urban rail transit. The control objective is to match the actual wheel-rail adhesion force by reducing braking force, thereby minimizing or preventing wheel tread abrasion. Therefore, it is necessary to analyze and study anti-skid protection control technology for urban rail transit vehicles based on their specific characteristics. [Method] Starting from the principles of anti-skid protection control, the theory of wheel-rail adhesion for urban rail transit vehicles is elucidated. The control principles of electric braking anti-skid, pneumatic braking anti-skid, and electric-pneumatic hybrid braking for urban rail transit vehicles are introduced, as well as situations involving wheel axle locking. [Result & Conclusion] The traction system electric braking anti-skid and the air braking system pneumatic braking anti-skid both utilize coasting ratio and deceleration as criteria for slide detection. Adjusting the braking force achieves maximum utilization of wheel-rail adhesion, minimizing occurrences of wheel locking and wheel tread abrasion. Regarding anti-skid control in electric-pneumatic hybrid braking, it is essential to adopt a rational anti-skid control interface scheme based on the characteristics of different systems and variations in skid criteria, thus ensuring the correct coordination of anti-skid functions between systems.
Authors and Affiliations
Xingwang ZHANG, Jialing LIU, Xiaogeng YAN, Zheng LIU
Keywords
Related Articles
- EP ID EP730104
- DOI 10.16037/j.1007-869x.2024.02.039
- Views 26
- Downloads 0
Method for Restoring Urban Rail Transit Passenger Spatio-Temporal Paths in Consideration of Congestion
Objective Passenger flow is the pillar for operation and management of urban rail transit. With the increasing development of urban rail transit, the demand for meticulous and accurate passenger flow analysis is getting...
Construction Technology for Ultra-wide Excavation near Existing Buildings in Metro Station Shield Tunneling Receiving Area
Objective It is aimed to address the difficulty in settlement control of existing ground buildings during ultra-large section excavation beneath them in metro station construction. Method Based on the shield tunneling re...
Redundant Speed and Distance Measuring System at Train Head and End Based on CAN Bus
Objective Data interconnection and interaction are realized through ATP (automatic train protection) system in most of the existing train speed and distance measuring technologies. However, the implementation process is...
Stability Study of Confined Aquifer Foundation Pit Bottom Plate Inrush Based on Nonlinear Failure Criterion
[Objective] In water-rich rock stratum regions, preventing confined aquifer inrush accidents is a key focus and challenge in the design and construction of deep foundation pit projects. Accurately and effectively determi...
Stratum Deformation Characteristics Analysis of Underground-excavated Metro Tunnel in Construction Waste Backfill Layer
Objective There are more and more cases of metro tunnel engineering crossing through miscellaneous fill strata featured by high porosity, low strength, and easy deformation, resulting in unclear land subsidence mechanism...