Method and device for controlling braking of a rail vehicle

Abstract

This application provides a rail vehicle braking control method and device, which are applied to the automatic train driving system. The preset train braking force gradient model is determined in advance according to the braking force gradient coefficient formula and the maximum value of the train unit braking force. , by inputting the braking control parameters such as the maximum value of the train unit braking force, the response time of the brake machine, the braking proportional coefficient, the gradient coefficient of the braking force, and the reaction time for the train braking force to rise to the maximum value, etc., into the preset train braking force Gradient model to determine the train braking force curve; this application realizes the braking curve planning and braking follow-up control of the train automatic driving system through the determined train braking force curve, and accurately expresses the air braking force change process during the braking process of rail vehicles. Realize the control and follow-up of automatic train driving, and precisely control the running process of rail vehicles, thereby increasing the safety of the automatic train driving system and improving user experience.

Description

technical field [0001] The application belongs to the automatic driving technology in the field of rail locomotives, relates to the technical field of brake control of rail vehicles, and in particular relates to a method and device for braking control of rail vehicles, which are applied to the train automatic driving system of railway transportation. Background technique [0002] At present, the main braking method used by constant-speed rail vehicles is air braking (brake shoe braking), which is powered by compressed air, and the brake shoe is pressed against the wheel tread by the air brake to generate braking force by friction, so that the wheel The train decelerates, does not accelerate or stops under the action of the adhesion between the rail and the rail. Among them, the calculation process of the air braking force (the brake shoe braking force, that is, the train braking force of the rail vehicle): First, according to the brake cylinder pressure, brake cylinder diame...

AI Technical Summary

Problems solved by technology

Although the control distance and the idling distance can be calculated according to the formula contained in the traction calculation formula in the traction calculation specification document (traction calculation standard TB1407-1998), the approximate calculation of the braking distance under steady state can only be performed, and cannot Accurately express the change process of the train braking force during the braking process of the rail vehicle, and cannot realize the control follow-up of the automatic driving of the train, thus affecting the automatic control during the operation of the rail vehicle, reducing the safety of the automatic driving system of the train, and affecting the user experience

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