Method and device for correcting lateral deviation of permanent magnet magnet group in maglev traffic equipment

Abstract

The invention provides a method and a device for correct lateral deviation of a permanent magnet group in a maglev traffic device. The device includes a control unit, a track, a permanent magnet, a sensor and an electromagnet. The invention provides a levitation force through magnetic mutual exclusion between the permanent magnet and the track, A closed-loop control system is formed by a sensor, acontrol unit and an electromagnet. The control unit in the closed-loop control system performs PID operation on the data obtained by the sensor to obtain a decreasing current, and the current excitesthe electromagnet to generate a magnetic field and gradually corrects the lateral bias of the magnet. The PID control method can gradually reduce the force of the magnetic field generated by the excitation current on the bogie, As that bogie move more and more slowly, the system can also be cushioned and protect, so that the magnetic field excited by the bogie can keep the permanent magnet arrayof the track from contacting with the permanent magnet array of the vehicle, and the lateral deviation of the maglev system can be corrected.

Description

Technical field [0001] The invention relates to the field of rail transit, and in particular to a method for controlling rail transit equipment driven by magnetic levitation. Background technique [0002] At present, the magnetic levitation rail transit system is mainly divided into three types according to the levitation mode, namely: electromagnetic levitation (EMS), electric levitation (EDS) and permanent magnetic levitation (PMS). [0003] EMS: Electromagnetic levitation is a kind of suction levitation system. The electromagnet combined on the locomotive and the ferromagnetic track on the rail repel each other to produce levitation. When the normally conductive magnetic levitation train is working, the electromagnetic repulsion force of the levitation and the guiding electromagnet at the lower part of the vehicle is adjusted first, and the magnets react with the windings on both sides of the ground track to float the train. Under the reaction of the guide electromagnet and the...

AI Technical Summary

Problems solved by technology

This phenomenon will affect the stability of the suspension system

Specifically, the lateral deviation of the magnetic group will deflect the mutually repulsive force between the permanent magnet and the track, and the deflection of the force will cause the magnetic field lines in the vertical direction to be insufficient to maintain the suspension of the device

The horizontal component generated by the force deflection will further intensify the deflection trend, which will eventually lead to contact and wear between the electromagnetic guide materials, noise, and even safety hazards

However, there are few methods on the market to correct the lateral deviation of the permanent magnet group in permanent maglev rail transit

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