Determination method of braking point of rail transit train running path

Abstract

The invention discloses a braking point determining method of a rail transit train operation path. The braking point determining method comprises the following steps: determining a train operation path; confirming speed limiting sections for which braking points need to be set in sequence; determining highest operation speed and traction distance of the train; if the highest operation speed is equal to a limiting speed, obtaining a train braking distance; if the distance difference is more than an error threshold, correspondingly changing the traction or constant speed operation distance into half of the difference; repeating the steps; if the highest operation speed is less than the limiting speed, reducing the highest operation speed by half of the difference; figuring out train traction and braking distances; if the distance difference is more than the error threshold, repeating the calculation by using a processing method that the highest operation speed is equal to the limiting speed; and finally, detecting whether braking points are obtained in all processing or not. According to the invention, by using an iterative approximation method, a braking curve meeting any accuracy is obtained by finite operation and the braking point is confirmed.

Description

technical field [0001] The invention relates to a method for determining a braking point of a running path of a rail transit train, in particular to a method for determining the braking point of each speed-limited section in the running path of a rail transit train. Background technique [0002] The determination method of the braking point of the rail transit train running path is an important guarantee for the effective implementation of the train running strategy, and it is one of the foundations for the engineering design and operation capability analysis of the fixed block, quasi-moving block and moving block signal system. [0003] Currently used methods for determining the braking point in the train running path are mainly divided into two categories. [0004] The first category is a simplified trial-and-error method for train operation calculations. The technical principle of this method is to calculate the ATP (Automatic Train Protection) speed limit in the speed l...

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to overcome the defects of the simplified trial-and-error method and the fixed-step-length trial-and-error algorithm in the prior art that have large calculation errors and a large amount of data to be processed, eliminate the risk of operational safety accidents, and provide a rail transit The method for determining the braking point in the train running path is to obtain the braking curve in the speed limit section satisfying any accuracy through a finite number of calculations by means of iterative approximation, so as to accurately and quickly determine the speed limit area brake point in segment

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