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A signal processing method and device for a position sensor of a maglev train levitation system

A technology for sensor signals and maglev trains, applied in transportation and packaging, vehicle parts, electric vehicles, etc., can solve problems such as unsatisfactory results, divergence, strong nonlinearity, and model uncertainty

Active Publication Date: 2019-12-31
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

In addition, control strategies such as fuzzy control, nonlinear PID control, nonlinear adaptive control, and variable structure are also used in the suspension control system of maglev trains. The effect appears to oscillate or even diverge
In addition, due to the strong nonlinearity and model uncertainty in the system, the effect of the model-dependent control algorithm on suppressing the perturbation of the model parameters and the external disturbance of the system is not satisfactory.

Method used

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  • A signal processing method and device for a position sensor of a maglev train levitation system
  • A signal processing method and device for a position sensor of a maglev train levitation system
  • A signal processing method and device for a position sensor of a maglev train levitation system

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Embodiment Construction

[0066] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0067] see Figure 1 to Figure 7 , figure 1 A flow chart of a position sensor signal processing method for a maglev train levitation system provided by the present invention, figure 2 is the boundary curve (Γ A , Γ B ), intersection point (x A , x B ) and a schematic diagram of the linear region (Ω), image 3 is the two-step reachable area Ω 2 schematic diagram, Figure 4 It is a schematic diagram of the state transfer process of this application and the classic Han Jingqing tracking differentiator system, Figure 5 For this application and the classic Han Jingqing tracking differentiator tracking filter error schematic diagram, Image 6 It is a schematic diagram of the differential signal extraction error between this application and t...

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Abstract

The invention discloses a magnetic levitation train suspension system position sensor signal processing method and device. The method includes the following steps that S100, real-time signals of a suspension system position sensor are obtained as to-be-processed signals; S200, a discrete time optimal controller is designed according to a discrete second-order series system, and a tracking differentiator corresponding to the optimal controller is constructed; S300, a suspension height signal and a speed signal required by a magnetic levitation train suspension system are obtained through the tracking differentiator according to the real-time signals of the position sensor; and S400, the obtained suspension height signal and the obtained speed signal are fed back to the optimal controller, and the system reaches the expected system state. The signals of the suspension system position sensor can be processed in real time, the filter capacity for noise of the signals is high, and thereforesafe and stable suspension of a magnetic levitation train can be guaranteed.

Description

technical field [0001] The invention relates to the field of maglev control, in particular to a signal processing method and device for a position sensor of a maglev train levitation system. Background technique [0002] Electromagnetic maglev train is a new type of vehicle that relies on electromagnetic attraction to suspend the car body on the track, and uses linear motor traction to replace the rotary transmission of wheel-rail train. With many advantages such as strong slope ability and small turning radius, it has attracted more and more attention and support from people inside and outside the industry. The levitation control system of the maglev train is the core system for the safe and stable levitation of the train, so it is very necessary to study the levitation control of the maglev train. [0003] At present, there are many studies on the levitation control algorithm of maglev trains. There is an accurate feedback linearization control based on the nonlinear mag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L13/06
CPCB60L13/06
Inventor 龙志强张和洪曾杰伟
Owner NAT UNIV OF DEFENSE TECH
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