Tramcar hydraulic braking electronic control device, braking anti-skid control module and braking anti-skid control method

Abstract

The invention discloses a tramcar hydraulic braking electronic control device, a braking anti-skid control module and a braking anti-skid control method. The braking anti-skid control method comprisesthe following steps: a train load M is obtained; a deceleration target value atarget- is obtained according to a train braking level; a braking force target value Ftarget is calculated, a pressure target value Ptarget of a brake cylinder is calculated, a pressure feedback value Pfeedback of the brake cylinder is obtained, and a pressure target error value delta P is calculated; a valve PWM targetcontrol signal for controlling a hydraulic valve is obtained according to the pressure target error value delta P; a shaft speed signal Vaxis is obtained, and an anti-skid coefficient Q is calculated; and a valve PWM final control signal is obtained according to the anti-skid coefficient Q and the valve PWM target control signal to drive the hydraulic valve to adjust the pressure of the brake cylinder for braking and anti-skid control. The tramcar hydraulic braking electronic control device, the braking anti-skid control module and the braking anti-skid control method have the advantages thatbraking control and anti-skid control are integrated on one module, and accurate braking and anti-skid adjustment can be achieved by setting the anti-skid coefficient Q.

Description

technical field [0001] The invention relates to the technical field of urban rail braking, in particular to a tram hydraulic braking electronic control device, a braking anti-slip control module and a braking anti-slip control method. Background technique [0002] The brake system of urban rail trains generally adopts air brake system, including air source device and anti-skid control device. The air source device is used to supply air for air springs and other air-using equipment. The brake electronic control device calculates the load by collecting the signal of the air spring pressure sensor, and controls the charging and exhaust valves to adjust the braking force according to this to ensure that different loads The braking deceleration under the same. The anti-skid control device includes an anti-skid exhaust valve, a speed sensor, etc. The brake electronic control device adjusts the pressure of the brake cylinder by controlling the action of the anti-skid exhaust valve...

AI Technical Summary

Problems solved by technology

The braking electronic control device of the tram is required to be installed in the roof. Due to the limited space in the roof, the electronic braking control device is required to be small in size. Require

[0005] Due to the cancellation of the anti-skid exhaust valve in the existing tram hydraulic brake system, the traditional control method of controlling the anti-skid exhaust valve can no longer meet the requirements of the hydraulic brake system

At the same time, for the two hydraulic braking systems using proportional valves or high-speed switching valves, it is necessary to design new and different control methods to achieve anti-skid function by adjusting the braking force, otherwise it will easily lead to control logic confusion and even wheel rubbing.

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