Track traffic train traction brake system and method

Abstract

The invention discloses a track traffic train traction brake system and method. The system comprises a central control system, a brake executing device and a traction control system, wherein the brake executing device and the traction control system are respectively connected to the central control system; the central control system comprises a brake control module which is used for controlling the execution of electropneumatic hybrid brake; the central control system receives a traction command and a brake command of trains from a train communications network, and starts the traction control system to control and execute the traction operation according to the received commands, or the brake control module is used for controlling the brake executing device and the traction control system to execute the electropneumatic hybrid brake. According to the method, the system is used for executing traction and brake. The track traffic train traction brake system disclosed by the invention has the advantages of being simple in structure, low in required cost, capable of executing brake control in real time, and high in electropneumatic hybrid precision and efficiency.

Description

technical field [0001] The invention relates to the technical field of rail transit trains, in particular to a traction braking system and method for rail transit trains. Background technique [0002] The traction and braking of trains in rail transit trains are respectively controlled and executed through the traction control system and the braking system. The traction control system and braking system distributed in each vehicle unit are connected into a train network through the vehicle bus. Between them, information is exchanged through the train communication network. There are mainly two control modes for the traction and braking of trains, one is the automatic driving mode, and the traction / braking command is issued by the automatic driving system of the train; the other is the manual mode, which is operated by the driver under the condition of automatic protection Driver controllers for traction and braking. like figure 1 As shown, the existing train traction brak...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned traditional train traction braking system transmits control data through the network control system. Since there is a certain time delay in network data transmission, during the initial rise of the braking force of the electro-pneumatic hybrid braking, the braking level change stage, and the parking electric brake Both dynamic and air braking stages will affect the accurate execution of braking, specifically: in the initial rising stage of braking force, due to the traction fading time, the data between the traction control system and the braking control needs to be transferred through the network control system, and the data There is a certain delay in the transmission, so redundant air brake overshoot or too long idling distance often appear, even through parameter setting and adjustment, this problem cannot be completely solved; The force feedback is not timely, so additional air braking often occurs, and it often superimposes with electric braking to cause fluctuations and impacts of train braking; The delay of electric braking force feedback will also cause the total braking force obtained by superimposing the application of frictional braking force and electric braking force in the conversion stage to fail to respond to the braking command in time, resulting in the need for constant adjustment of the braking command, and making the braking distance Inaccurate calculation affects accurate parking

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