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Rapid and accurate train stopping method based on state identification

A train and fast technology, applied in railway car body parts, railway signal and safety, transportation center control system, etc., can solve problems such as frequent switching of control levels, parking deviation, etc.

Active Publication Date: 2021-05-04
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the train model used by the traction calculation module in the controller deviates from the actual train, if the train is controlled according to the ideal control amount of the reference curve, it will cause deviation in parking or frequent switching of control levels

Method used

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  • Rapid and accurate train stopping method based on state identification
  • Rapid and accurate train stopping method based on state identification
  • Rapid and accurate train stopping method based on state identification

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] A fast and accurate train parking method based on state identification, such as figure 1 shown, including the following steps:

[0066] S1. Obtain basic data;

[0067] Basic data include: basic train data, such as vehicle weight, traction braking characteristics; basic line data, such as station kilometer mark, speed limit, slope and curve; parking brake time, brake adjustment time, speed tolerance and train brake Response delay, where,

[0068] The train braking response time lag is caused by factors such as the electrical structure in the braking system, the Micro Brake Control Unit (MBCU) and the response time delay of the electro-pneumatic valve, so that the train braking process can be approximately described as an industrial Typical 1st order lag model in production;

[0069] The traction braking characteristic represents the relationship between the train running speed and the maximum braking force.

[0070] S2, plan the speed-distance reference curve of the ...

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Abstract

The invention discloses a rapid and accurate train stopping method based on state identification. The method comprises the following steps: firstly, acquiring basic data, then planning a train stopping speed-distance reference curve according to the basic data, solving a braking level, then planning a train reference stopping curve, and forming a speed-distance curve cluster; and enabling the train to stop according to the settled brake level, when the running time of the train exceeds the brake adjustment time, carrying out rapid matching according to the actual running speed-distance curve of the train and the generated curve cluster, and updating the train reference curve according to the matching result. Train running state deviation caused by uncertain factors such as vehicle characteristic deviation, braking system response process deviation, train weight deviation and the like is considered, the train reference speed curve is adjusted so that the train stopping precision is improved, errors of a controller tracking curve and the reference stopping curve are reduced by adjusting the train reference stopping curve, a train control level fluctuation is decreased, and the riding comfort of passengers is improved.

Description

technical field [0001] The invention relates to the fields of automatic train control and automatic driving of trains, in particular to a fast and precise train parking method based on state identification. Background technique [0002] With the advancement of my country's smart urbanization process and the application of advanced signal technology for interconnection in rail transit lines, the operational reliability, operating efficiency, and passenger comfort of the automatic train operation system (ATO) system in urban rail transit Standards and norms are becoming more and more perfect. According to the system index requirements for ATO parking accuracy on the platform in the "Urban Rail Transit CBTC Signaling System-ATO Subsystem Specification": the probability of ATO parking accuracy within ±0.5m is greater than or equal to 99.9998%; the probability within the accuracy range of ±0.3m is greater than Equal to 99.99%. Therefore, how to efficiently realize the precise pa...

Claims

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Application Information

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IPC IPC(8): B61L27/04B61L27/00
CPCB61L27/04B61L27/40
Inventor 冯晓云郭佑星方倩孙鹏飞王青元
Owner SOUTHWEST JIAOTONG UNIV
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