A control method, system and device for a DC motor of a hydraulic braking system

Abstract

The invention discloses a control method for a DC motor of a hydraulic braking system, which is applied to each EBCU, including: sending its own vehicle formation position information through a train network, and receiving vehicle formation position information of other EBCUs; when the self-controlled When the motor needs to start, send the motor start preparation signal to the train network; when it is judged that no other motor is currently starting, start it according to the priority level, and cancel the transmission of the motor start preparation signal when the motor under its own control is starting , sending a signal that the motor is starting to the train network, and canceling the sending of the signal that the motor is starting after the start is completed; wherein, the priority is the priority determined according to the vehicle formation position information of each EBCU. Applying the scheme of the present invention avoids the synchronous start of the DC motor in the train braking system. The invention also discloses a control system and equipment of the direct current motor of the hydraulic brake system, and 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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