Braking point determining method of rail transit train operation path

A technology of running paths and rail transportation, applied in railway traffic management, transportation center control system, transportation and packaging, etc., can solve the problems of large calculation error and large amount of data, and achieve close calculation, accurate calculation, and improvement. Effects of Computational Accuracy and Convergence Speed

Active Publication Date: 2012-08-29
SHANGHAI SHENTONG METRO
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  • Abstract
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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

Method used

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  • Braking point determining method of rail transit train operation path
  • Braking point determining method of rail transit train operation path
  • Braking point determining method of rail transit train operation path

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Embodiment

[0039] The method for determining the braking point of the running path of the rail transit train in this embodiment is based on the displacement or speed spacing of the braking curve or traction curve of the train in the current speed-limited section relative to the train's exit end, and adopts a variable step that takes half the spacing The principle of long movement value is to calculate the displacement of the braking point relative to the exit end of the train in the current speed-limited section, and change the position of the braking point, so as to reduce the displacement distance through multiple loop iteration calculations Within the range of the allowable error threshold of the position, and through the adjustment of the allowable error threshold of the position, the accuracy of the train stop, the calculation accuracy and efficiency of the train operation can be effectively controlled, and the accurate calculation of the whole process of the actual operation of the t...

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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...

Claims

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Application Information

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IPC IPC(8): B61L27/00
Inventor 刘循张琼燕丁建中洪海珠牛振宇赵霞邓瀚陆晓地马能艺
Owner SHANGHAI SHENTONG METRO
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