Rail Transit Train Traction Braking System and Method Based on Traction Braking Control Fusion

Abstract

The invention discloses a rail transit train traction braking system and method with traction braking integration, which includes a central control system, a braking actuator and a traction actuator respectively connected to the central control system. Braking control module for air hybrid braking, traction control module for controlling the traction actuator to perform traction or electric braking operation, the central control system receives the traction and braking commands of the train in real time through the train communication network, and through the brake control module 1. The traction control module respectively controls the brake actuator and the traction actuator to perform traction operation or electro-pneumatic hybrid braking operation; the method is a method of using the above-mentioned system to perform traction and braking. The invention has the advantages of simple structure, low required cost, real-time traction and braking control, high execution precision and high efficiency in the whole process of electro-pneumatic hybrid braking.

Description

technical field [0001] The invention relates to the technical field of rail transit trains, in particular to a rail transit train traction braking system and method with integrated traction braking control. 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 control system. The traction control system and the braking control system distributed in each vehicle unit are connected to form a train network through the vehicle bus. Trains exchange information 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. Such as ...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned traditional train traction braking control 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 phase, and the parking power The stage of braking to air braking will affect the accurate execution of braking, specifically: in the initial rising stage of braking force, due to the time when the traction force fades, the data between the traction control system and the braking control needs to be transferred through the network control system, and There is a certain delay in data transmission, so redundant air brake overshoot or long idling distance often occur, even through parameter setting and adjustment, this problem cannot be completely solved; during the stage of braking level change, due to the Braking 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; And the delay of the electric braking force feedback will also cause the total braking force obtained by superimposing the air braking force and the 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, resulting in braking Inaccurate distance calculation affects accurate parking

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