Research on Real-time Wheel-rail Force Identification Network of Rail Transit under Compound Line Conditions
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 8
Abstract
Objective Wheel-rail force plays an important role in the study of train running state, wheel off roundness and rail corrugation in rail transit. Current wheel-rail force identification methods have some problems, such as difficulty in data collection, high cost and inability to identify wheel-rail force under rail transit line conditions, so it is necessary to study the real-time wheel-rail force identification network of rail transit lines. Method A real-time wheel-rail force identification network of rail transit lines is constructed based on convolutional neural network. According to the measured data of a type of urban rail transit trailing car, the simulation model is established using SIMPACK software. Based on the simulation data, the accuracy and speed of the real-time wheel-rail force identification network for the lateral and vertical wheel-rail forces under working conditions, such as different curve radii lines and different train running speeds are studied. Result & Conclusion The real-time wheel-rail force identification network has an excellent ability to identify the wheel-rail vertical force, with the correlation coefficients all up to 0.99, and the average absolute error about 500 N and only 1% of the true value. The identification ability of the network for wheel-rail lateral force decreases with the increase of train operating speed, but it is still within the acceptable range. The correlation coefficient decreases from 0.93 to 0.65, and the average absolute error increases from 1 480 N to 3 000 N, which is approximately 20% of the actual value. The proposed network has a fast calculation speed and can meet the needs of wheel-rail force real-time identification.
Authors and Affiliations
Zeteng ZHANG, Jinhai WANG, Jianwei YANG, Dechen YAO
Keywords
Related Articles
- EP ID EP742679
- DOI 10.16037/j.1007-869x.2024.08.008
- Views 43
- Downloads 0
Operation Scheme for City Railway Train Considering Passenger Travel Time Value
[Objective] In view of the functional orientation of city railway and the inconsistency in passengers demand for travel convenience, ride comfort, and economy under the current economic and social development, it is nece...
Technical Analysis of Transition Switching Engineering in Urban Rail Transit Signaling System Upgrades
［Objective］ As urban rail transit lines in many major cities across China have entered the system upgrade stage, it is crucial to ensure the safety, reliability, and efficiency of transition switching engineering durin...
Automatic Protection Scheme Analysis for Fully Automatic Operation Line Section Evacuation
Objective There are no train crew on the train that runs on the fully automatic operation (FAO) line of urban rail transit, leading to very big safety risks in the evacuation scenario. Therefore, it is necessary to study...
Pressure Wave Control Scheme for Metro Vehicle at Speed of 120 km/h
Objective With the increasing demand for passenger comfort in urban rail transit, pressure wave control inside metro trains at speed of 120 km/h and above has become a an essential function of train air-conditioning syst...
Prediction of Metro Train Air-conditioning Return Air Temperature Based on Real-time Field-measured Data
［Objective］ To enable proactive adjustment of the cooling capacity for metro train AC (air-conditioning) system based on ambient temperature, it is essential to study the prediction of return air temperature in metro t...