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Magnetic flux feedback levitation control method and device for ems type low-speed levitation train

A suspension train and suspension control technology, applied in electric vehicles, vehicle components, transportation and packaging, etc., can solve the problems of technical obstacles, difficulty in obtaining magnetic flux signals, small measurement range, etc., to achieve stable suspension, improve static characteristics and Dynamic characteristics, high sensitivity effects

Active Publication Date: 2015-10-28
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the magnetic flux feedback has a relatively broad prospect, because it is difficult to obtain the magnetic flux signal in a large magnetic field environment, the existing Hall sensor has a relatively small measurement range, so the magnetic flux sensor applied to the suspension control system exists. technical barrier

Method used

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  • Magnetic flux feedback levitation control method and device for ems type low-speed levitation train
  • Magnetic flux feedback levitation control method and device for ems type low-speed levitation train
  • Magnetic flux feedback levitation control method and device for ems type low-speed levitation train

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Embodiment Construction

[0044] Such as figure 2 As shown, the implementation steps of the magnetic flux feedback suspension control method of the EMS type low-speed suspension train in this embodiment are as follows:

[0045] 1) Pre-wind the magnetic flux induction coil on the outside of the wire package on the suspension electromagnet of the EMS low-speed suspension train, and detect the induced electromotive force of the magnetic flux induction coil when the EMS low-speed suspension train is running, and adjust the gain of the induced electromotive force in turn , integration, calibration and zero adjustment to obtain the magnetic flux density at the suspension gap; at the same time, collect the suspension acceleration and suspension gap of the EMS low-speed suspension train;

[0046] 2) Calculate the control rate of the suspension system according to the magnetic flux density at the suspension gap, the suspension acceleration, and the suspension gap;

[0047] 3) Generate the closed-loop control ...

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Abstract

The invention discloses a magnetic flux feedback suspension control method and device of an EMS type low-speed aerotrain. The method comprises the following implementation steps: collecting and obtaining the magnetic flux density at the position of a suspension gap through a magnetic flux induction coil a, and collecting the suspension accelerated speed and the suspension gap; calculating a suspension system control rate according to the magnetic flux density, the suspension accelerated speed and the suspension gap; generating a closed loop to control PWM signals according to the suspension system control rate, and respectively outputting the PWM signals to a PWM driving circuit to adjust the suspension force between a suspension electromagnet and a track. The device comprises a sensor set, a data collection board, a suspension controller and the PWM driving circuit, wherein the sensor set, the data collection board, the suspension controller and the PWM driving circuit are sequentially connected. The method and device have the advantages of being good in suspension control stability, high in sensitivity, low in control bandwidth, capable of improving the stability and robustness of the suspension control system, simple, easy to implement, strong in anti-jamming capability, good in expandability, and flexible in implementation.

Description

technical field [0001] The invention relates to the technical field of levitation control of maglev trains, in particular to a magnetic flux feedback levitation control method and device for EMS low-speed levitation trains. Background technique [0002] EMS (Electro Magnetic Suspension) low-speed maglev train is a new type of rail transportation, which has the advantages of safety, comfort, high speed, low noise, no pollution, and small turning radius. Its main principle is to rely on the suspension electromagnet on the suspension train. The electromagnetic attraction between the track and the track makes the train suspend on the track, and then it is driven by linear motor traction. The EMS low-speed suspension train mainly includes traction system, suspension control system, secondary system structure, car body, etc. The traction system mainly refers to the traction motor and induction aluminum plate. Among them, the suspension control system includes suspension electroma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L13/04
Inventor 李杰张文清张锟崔鹏周丹峰
Owner NAT UNIV OF DEFENSE TECH
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