Method and device for correcting lateral deviation of permanent magnet group in maglev transportation equipment
A technology of lateral deviation and equipment, applied in the field of rail transit, which can solve problems such as tendency to intensify deflection, noise, contact with electromagnetic guiding materials, etc.
Active Publication Date: 2020-04-07
JIANGXI UNIV OF SCI & TECH +1
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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
Method used
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[0037] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0038] This patent is aimed at the phenomenon of lateral deviation of the suspended permanent magnet group in the permanent magnetic levitation mode due to factors such as turning or vibration in the permanent magnetic levitation rail transit, and this phenomenon will affect the stability of the levitation system. However, there are few methods on the market to correct the lateral deviation of the permanent magnet set in the permanent maglev rail transit. This patent relates to a method and device for correcting the lateral deviation of the permanent magnet group.
[0039] figure 2 According to the suspended rail transit equipment of the present invention, it incl...
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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 transportation, in particular to a control method for rail transportation equipment driven by magnetic suspension. 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 maglev levitation (PMS). [0003] EMS: Electromagnetic Suspension, is a suction suspension system, in which the electromagnet on the locomotive and the ferromagnetic track on the guide rail repel each other to generate suspension. When the conventional magnetic levitation train is working, firstly adjust the electromagnetic repulsion force of the suspension and guide electromagnet at the lower part of the vehicle, and react with the windings on both sides of the ground track to float the train. Under the reaction of the guide electromagnet at the lower part of the...
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IPC IPC(8): B60L13/06
CPCB60L13/06B60L2200/26
Inventor 邓永芳邓斌黄晨马启文杨牧南周发助郑欣欣
Owner JIANGXI UNIV OF SCI & TECH