Rail vehicle braking control method and device

Abstract

The invention provides a rail vehicle braking control method and device which are applied to a train automatic driving system. The method comprises the steps that a preset train braking force gradual change model is determined in advance according to a braking force gradual change coefficient formula and a train unit braking force maximum value; and a train braking force curve is determined by inputting braking control parameters such as the maximum value of a train unit braking force, brake response time, a braking proportionality coefficient, a braking force gradual change proportion coefficient and response time when the train braking force rises to the maximum value into a preset train braking force gradual change model. By means of the determined train braking force curve, braking curve planning and braking following control of an automatic train driving system are achieved, the air braking force change process in the rail vehicle braking process is accurately expressed, control following of automatic train driving is achieved, the rail vehicle running process is accurately controlled, therefore, the safety of the train automatic driving system is improved, and the user experience is improved.

Description

technical field [0001] The application belongs to the automatic driving technology in the field of rail locomotives, and relates to the technical field of rail vehicle braking control, in particular to a rail vehicle braking control method and device, which are applied to train automatic driving systems for railway transportation. Background technique [0002] At present, the main braking method used by normal-speed rail vehicles is air braking (brake shoe braking). With compressed air as the power, the brake shoe is pressed against the wheel tread through the air brake and the braking force is generated by friction. 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 (braking shoe braking force, that is, the train braking force of the rail vehicle): first, according to the brake cylinder pressure, brake cylinder diameter, transmission efficiency, brak...

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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