Method and device for closed-loop regulation and control of brake pressure of train

Abstract

The invention discloses a method and device for closed-loop regulation and control of brake pressure of a train. Closed-loop control on the brake pressure of the train is directly carried out through a driver brake controller by a digital command, a mechanical structure is simple, maintenance and repair costs are low, the consumption amount of compressed air is small (due to energy conservation of the train), idling braking time in a brake process is quite short, the brake speed is high, graduated release can be realized, excessive supply cannot be generated, brake pressure can be accurately controlled in real time in a brake process of the train, gliding of wheels can be prevented, safety and reliability can be improved further, and production costs generated by gliding scratching of wheels and steel tracks are greatly reduced. The bottleneck problem of brake for speed increasing of the train is solved. The method and device for closed-loop regulation and control of brake pressure of the train have the advantages that the method is advanced, safe and reliable, and a control mode of carrying out open-loop control on brake pressure of the train in an automatic air numerically controlled brake which uses a train tube pressure control-brake valve to work in recent hundreds of years is changed.

Description

technical field [0001] The invention relates to the field of train automation control, in particular to a method and a device for closed-loop regulation and control of train braking pressure. Background technique [0002] At present, there are two main types of braking of railway locomotives in my country: automatic air number control motive system and electric air number control motive system. What they have in common is that they all control the change of the air pressure in the train pipe to open-loop control the emergency braking, braking, pressure maintaining and alleviation of the whole train. Has the following deficiencies: [0003] The mechanical structure is complex, the control sensitivity is low, limited by the speed of the air brake wave, and there is a long idle time during the braking process, which cannot achieve stage relief; excessive supply is prone to occur, and the adjustment of the empty-heavy vehicle requires an additional adjustment mechanism. When t...

AI Technical Summary

Problems solved by technology

[0003] The mechanical structure is complex, the control sensitivity is low, limited by the speed of the air braking wave, and there is a long idle time during the braking process, which cannot achieve phase relief; it is prone to oversupply, and the adjustment of empty and heavy vehicles requires an additional adjustment mechanism

When the train is running, it is necessary to increase the rear device of the train to ensure the safety of the train; at the same time, it cannot automatically detect the brake pressure; it cannot automatically prevent the wheels from slipping during emergency braking

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