Pressure control method and control system for a locomotive

Abstract

The invention discloses a pressure control method of a locomotive. The method comprises the steps of obtaining an inflation rate and an exhaust rate, calculating to obtain an inflation pressure increment value and an exhaust pressure increment value in a control period; according to the target pressure value, the stage target pressure value of the previous control period, and the inflation and exhaust pressure increment value, updating a stage target pressure value of the current control period; according to the target pressure value of the current control period and the pressure value of thecavity to be controlled, and calculating a first difference value, calculating a second difference value according to the stage target pressure value of the current control period and the pressure value of the to-be-controlled chamber, and controlling inflation, exhaust or pressure maintaining of the to-be-controlled chamber of the current control period according to the size relationship betweenthe first difference value and a preset first threshold value and the size relationship between the second difference value and a preset second threshold value. According to the pressure control method provided by the invention, accurate control over the locomotive pressure is realized, stable application and release of braking force are ensured, and the comfort of passengers is improved.

Description

technical field [0001] The invention relates to the technical field of rail vehicle braking, in particular to a pressure control method and control system for a locomotive. Background technique [0002] The brake system of the locomotive controls the opening and closing of the inflation solenoid valve or the exhaust solenoid valve, and then controls the pressure of the chamber to be controlled, so that the locomotive can relieve or brake. [0003] At present, in the existing technology, in order to accurately control the pressure of the pressure chamber, the target pressure value and the pressure value of the chamber to be controlled are collected in real time through the pressure sensor, and the controller in the braking system receives the target pressure value and the pressure value of the chamber to be controlled. After the pressure value of the chamber is calculated, the difference between the pressure value of the chamber to be controlled and the target pressure value ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problem of low control pressure accuracy of the locomotive pressure control method in the prior art, the present invention provides a locomotive pressure control method, which realizes The precise control of the locomotive pressure ensures the stable application and release of braking force and improves the comfort of passengers

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