Method, system and device for controlling dc motor of hydraulic brake system

Abstract

The invention discloses a control method of a direct current motor of a hydraulic brake system, which is applied to each EBCU. The method comprises the following steps: transmitting vehicle marshalling position information of the vehicle through a train network, and receiving vehicle marshalling position information of other EBCUs; When the self-controlled motor needs to be started, the motor start-up preparation signal is sent to the train network. When it is judged that no other motor is being started, the motor is started according to the priority, and when the motor controlled by the motoris being started, the transmission of the motor start-up preparation signal is canceled, the motor start-up signal is sent to the train network, and the transmission of the motor start-up signal is canceled after the start-up is completed; Wherein the priority is a priority determined according to the vehicle grouping position information of each EBCU. The scheme of the invention avoids synchronous startup of a DC motor in a train braking system. The invention also discloses a control system and a device of a direct current motor of a hydraulic braking system, which has corresponding effects.

Description

technical field [0001] The invention relates to the technical field of train control, in particular to a control method, system and equipment for a DC motor of a hydraulic braking system. Background technique [0002] Trains usually use a hydraulic brake system, and each hydraulic unit requires a DC motor to drive the oil pump to output oil pressure as the pressure output source of the brake system. [0003] The normal working current of the DC motor in the electro-hydraulic control unit is usually 10A, but its starting current is very large, up to about 80A, which may lead to unstable output voltage and insufficient output capacity of the battery, and damage the battery. service life, and may also directly lead to failure of train control signals. And when the train is powered on and started, the starting current is larger. Taking 6 motors in a train as an example, when starting at the same time, the starting current impact will reach 480A, which seriously endangers the sa...

AI Technical Summary

Problems solved by technology

[0003] The normal working current of the DC motor in the electro-hydraulic control unit is usually 10A, but its starting current is very large, up to about 80A, which may lead to unstable output voltage and insufficient output capacity of the battery, and damage the battery. service life, and may also directly lead to failure of train control signals

And when the train is powered on, the starting current is even greater. Taking 6 motors in a train as an example, when starting at the same time, the starting current impact will reach 480A, which seriously endangers the safe operation of the train.

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