High-speed train braking distance calculation method and system

Abstract

The invention provides a high-speed train braking distance calculation method and system, and the method comprises the steps: obtaining a data pair according to a train target deceleration-speed characteristic curve, and determining a target speed fitting function in a train braking process according to the data pair; according to the target speed fitting function, determining a first speed and a second speed corresponding to different set time intervals; according to the target deceleration of the train in each set time interval, determining the unit braking force of the corresponding train; and according to the train rotation mass coefficient, the train unit braking force corresponding to the set time interval, the first speed, the second speed and the train total resistance, determining the braking distance of the set time interval in the train braking process, then determining the effective braking distance of the train, and determining the train total braking distance in combination with the train idle running distance. The target speed is preset based on the target deceleration method, the train braking distance in each set time interval is calculated in a segmented mode, the total braking distance is obtained through accumulation, and the calculation precision of the braking distance is improved.

Description

technical field [0001] The invention relates to the technical field of vehicle safety, in particular to a method and system for calculating the braking distance of a high-speed train. Background technique [0002] With the rapid development of the railway industry, the safety of railway vehicles has become particularly prominent. The braking system of the train plays a very important role in the safe running of the train, and the "braking distance of the train" is a very important index to evaluate the performance of the braking system of the train. [0003] In the past, checking the braking distance of a train could only be tested by means of experiments. This method needs to consume a lot of manpower, material resources and time, and if only one or two parameters are changed, it needs to be tested again, which is less efficient and takes a long period. At the theoretical level, some scholars have also conducted related research on the calculation of train braking distanc...

AI Technical Summary

Problems solved by technology

This method requires a lot of manpower, material resources and time, and if only one or two parameters are changed, it needs to be tested again, which is inefficient and takes a long time.

At the theoretical level, some scholars have also carried out related research on the calculation of train braking distance. Although a lot of theoretical results have been obtained, the degree of systematization is far from enough, the calculation accuracy is low, and it is far from practical application.

The existing method of obtaining the results of the train braking distance by means of experiments is obviously unable to meet the relevant needs of train production units, braking system production units, related research units, and relevant research groups in universities.

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