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Rail transit vehicle parking control method and system

A rail transit vehicle and control method technology, applied in the direction of brakes, pneumatic brakes, railway car body parts, etc., can solve the problems of under-marking, over-marking, and low accuracy of mixed control, so as to prevent over-marking and under-marking, improve Effect of controlling accuracy and improving operation efficiency

Active Publication Date: 2020-10-27
ZHUZHOU ELECTRIC LOCOMOTIVE CO
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AI Technical Summary

Problems solved by technology

[0003] However, due to the different performances of the friction pairs of different vehicles, the accuracy of the hybrid control between the electric braking force exit slope, the exit speed point and the air brake application slope, and the air brake application point is not high, resulting in easy parking during parking. The phenomenon of over-marking (vehicle door exceeding the screen door) and under-marking (vehicle door not reaching the screen door) requires the vehicle to be restarted and re-marked, which seriously affects the operating efficiency of the vehicle

Method used

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  • Rail transit vehicle parking control method and system
  • Rail transit vehicle parking control method and system

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Embodiment Construction

[0036] Such as figure 1 As shown, the parking calibration process of the present invention is as follows:

[0037] The present invention is divided into two stages, namely the first control stage and the second control stage. The first control stage is the deceleration stage, which is to precisely reduce the initial speed to the target speed. The second stage is the precise parking stage.

[0038] from figure 1 It can be seen that the interval between the parking interval of the present invention (the interval between the starting point of the parking interval and the parking point) starting point and the marking point 1 (i.e. the first calibration point) corresponds to the first control stage, and the marking point 1 to the parking point The interval between corresponds to the second control stage.

[0039] The starting point of the parking interval referred to in the present invention refers to the position of the vehicle when the vehicle starts to brake (that is, the ve...

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Abstract

The invention discloses a rail transit vehicle parking control method and system. The method comprises the steps of adjusting the operation electric braking force of a vehicle in real time at each braking time point according to the deviation value of the actual speed of the vehicle and a reference speed, and when the actual speed of the vehicle is reduced to Vt, unloading the electric braking force, and using air braking for reaching a parking point. Parking control is divided into two stages, a virtual calibration point is set in the first stage, and the braking force is adjusted in real time according to the deviation value of the position speed of the virtual calibration point and the reference speed. In the second stage, a sliding section at the front end of the parking point is set,after the vehicle reaches the calibrationalignment point, the vehicle travels in a force unloading mode, and finally air braking is used for accurate parking. According to the method, the control precision of electric braking and air braking can be greatly improved, the phenomena of over-calibration and under-calibration are prevented, and the vehicle running efficiency is improved.

Description

technical field [0001] The invention relates to the field of rail transit, in particular to a parking control method and system for rail transit vehicles. Background technique [0002] The subway vehicle platform is usually equipped with a safety screen door to protect the safety of passengers. When the subway vehicle enters the station and stops, the passenger compartment door of the subway vehicle passengers must be precisely aligned with the screen door. The existing subway vehicle parking mode is that the signal system sends out the braking level requirement according to the position of the vehicle, and adjusts the braking level requirement according to the distance between the vehicle and the terminal. After the vehicle receives the brake level request, it will perform hybrid control of electric brake and air brake, and output the theoretical deceleration braking force. [0003] However, due to the different performances of the friction pairs of different vehicles, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T8/17B61H11/06
CPCB60T8/1705B61H11/06
Inventor 黄金虎方长征黎丹王丽王伟波孙宪红
Owner ZHUZHOU ELECTRIC LOCOMOTIVE CO
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