Train Brake Pipe Pressure Prediction Model Based on Test Data

Abstract:

To address the issue of the safe operation of long combined trains， the existing intelligent braking test platform of 150 marshaling vehicles were effectively utilized to predict the braking performance of ultra-long trains. An accurate predictive model was established for changes in train tube pressure in large combinations of vehicles with different grouping positions. A pressure difference model of the train pipe was proposed， a simulation mathematical model was developed using the curve fitting method and theoretical deduction， and an improvement method was suggested for the theoretical pressure difference model of the train pipe. Additionally， a train tube pressure change prediction model was obtained by superimposing the train tube pressure difference model and the first train tube pressure change model. The results indicate that the error is maintained within 10%. Finally， the change curve of train pipe pressure was obtained under the braking action of 200 assembled trains using this prediction model.

Key words:brake test;train pipe pressure;train pipe pressure difference;curve fitting;simulation mathematical model