Research on Solenoid Valve Control Method of Train Braking System
The braking system of rail vehicle adjusts the output value of brake cylinder pressure by controlling the switch of solenoid valve,so as to meet the demand of safe and rapid train stop.Aiming at the problem of frequent valve action in the process of brake cylinder pressure adjustment,and considering the hysteresis of the air pressure change in the volume chamber of the pneumatic system,a solenoid valve control method is proposed.The average air pressure variation value and hysteresis coefficient are introduced to control the process of air charging and exhausting.The experimental results show that the proposed control strategy can effectively reduce the operating frequency of the solenoid valve.
braking systemsolenoid valveaverage air pressure variation valuehysteresis coefficient
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