Brake control method and device for maglev train

Abstract

The invention provides a brake control method and device for a maglev train. The maglev train is dragged and braked through a long-stator synchronous linear motor. The brake control method comprises the steps of determining the initial braking distance of the maglev train; selectively compensating the initial braking distance according to a stator section step changing method of the long-stator synchronous linear motor to determine a reference braking distance; determining a reference braking curve according to the reference braking distance; and determining the reference speed of the current position in real time according to the reference braking curve and a preset speed limiting curve, so that braking of the maglev train is controlled. The invention further provides a device for achieving the brake control method. According to the braking control method and device of the maglev train, the problem that operation control is uncertain due to power change in the operation process of the maglev train is solved, and particularly in the process of controlling braking of the train, it can be guaranteed that the train is accurately braked, the speed limiting requirement is met, and accurate parking is achieved.

Description

technical field [0001] The invention relates to the field of train control, in particular to the control of a maglev train whose traction / braking force is provided by a long stator linear motor. Background technique [0002] The maglev train is a new type of rail transportation, which uses electromagnetic attraction or repulsion to achieve the suspension and traction of the train. Compared with traditional wheel-rail trains, maglev trains do not touch the ground because of their levitation characteristics, and have the advantage of not being limited by speed, and their maximum speed can reach more than (1000kM / h). In addition, the maglev train also has the characteristics of low energy consumption, simple and convenient operation and maintenance. The use of long stator synchronous linear motors to drive the motion of maglev trains is one of the key technologies for medium and high-speed maglev trains. Research on high-speed maglev traction control systems has important prac...

AI Technical Summary

Problems solved by technology

During this process, the traction force generated by the traction system also decreases and increases, so there is a power loss during the switching process

If there is a step change of the stator section during the deceleration and braking of the train, then according to the two-step step change method, the braking force generated will decrease due to the decrease of the current, which will cause the train to overspeed or stop when the mark ( That is, rushing past the predetermined parking point), it is easy to cause danger and bring hidden dangers to driving safety

[0009] In view of this, there is an urgent need for a more precise braking control method for maglev trains, which can avoid the problems of overspeeding or parking marks caused by power loss caused by different step-changing methods, so as to efficiently control maglev trains The braking process eliminates hidden dangers in driving safety and ensures the driving safety of maglev trains

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