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Rail transit vehicle axle counter magnetic field EMC semi-physical simulation method

A rail transit vehicle, semi-physical simulation technology, applied in the direction of instruments, simulators, general control systems, etc., can solve problems such as the inability to fully simulate the working environment of the axle counter, test and actual use effects, and result errors, etc. Good and stable timeliness, reduced deviation, and accurate data

Active Publication Date: 2021-11-16
CRRC CHANGCHUN RAILWAY VEHICLES CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The physical simulation is greatly affected by the environment, which also causes certain errors in the current simulation process, and the root cause of the error in the results is not caused by the calculation in the simulation process, but the current simulation After all, the environment cannot completely simulate a working environment of the axle counter, so it will have a certain impact on the test and actual use

Method used

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  • Rail transit vehicle axle counter magnetic field EMC semi-physical simulation method
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  • Rail transit vehicle axle counter magnetic field EMC semi-physical simulation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A rail transit vehicle axle counter magnetic field EMC semi-physical simulation method, comprising the following steps:

[0051] S1. Digital simulation: establish a mathematical model in the Simulink environment, and the Maxwell's equations obeyed by the magnetic field around the axle counter are as follows:

[0052]

[0053]

[0054]

[0055]

[0056] Among them: Γ is the field quantity surface, ι is the boundary of Γ, S is the field boundary surface, H is the magnetic field strength, J is the dielectric current density, J s is the density of the external field source current, D is the potential vector, E is the electric field strength, B is the magnetic induction, and ρ is the charge density.

[0057] When the field quantity is continuous, the differential form to obtain its Maxwell equations is as follows:

[0058]

[0059]

[0060]

[0061]

[0062] S2. Boundary derivation of magnetic field quantity: According to the above formula, we can ge...

Embodiment 2

[0079] A rail transit vehicle axle counter magnetic field EMC semi-physical simulation method, comprising the following steps:

[0080] S1. Digital simulation: establish a mathematical model in the Simulink environment, and the Maxwell's equations obeyed by the magnetic field around the axle counter are as follows:

[0081]

[0082]

[0083]

[0084]

[0085] Among them: Γ is the field quantity surface, ι is the boundary of Γ, S is the field boundary surface, H is the magnetic field strength, J is the dielectric current density, J s is the density of the external field source current, D is the potential vector, E is the electric field strength, B is the magnetic induction, and ρ is the charge density.

[0086] When the field quantity is continuous, the differential form to obtain its Maxwell equations is as follows:

[0087]

[0088]

[0089]

[0090]

[0091] S2. Boundary derivation of magnetic field quantity: According to the above formula, we can ge...

Embodiment 3

[0108] A rail transit vehicle axle counter magnetic field EMC semi-physical simulation method, comprising the following steps:

[0109] S1. Digital simulation: establish a mathematical model in the Simulink environment, and the Maxwell's equations obeyed by the magnetic field around the axle counter are as follows:

[0110]

[0111]

[0112]

[0113]

[0114] Among them: Γ is the field quantity surface, ι is the boundary of Γ, S is the field boundary surface, H is the magnetic field strength, J is the dielectric current density, J s is the density of the external field source current, D is the potential vector, E is the electric field strength, B is the magnetic induction, and ρ is the charge density.

[0115] When the field quantity is continuous, the differential form to obtain its Maxwell equations is as follows:

[0116]

[0117]

[0118]

[0119]

[0120] S2. Boundary derivation of magnetic field quantity: According to the above formula, we can ge...

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Abstract

The invention discloses a rail transit vehicle axle counter magnetic field EMC semi-physical simulation method, which is characterized in that an electromagnetic field constraint algorithm of an axle counter is adopted, a simulation model of a magnetic induction line of the axle counter is calculated by using a magnetic field line of the axle counter according to related conditions of a steady-current electromagnetic field, and connection simulation is synchronously implemented through a hardware I / O module and the axle counter; according to the semi-physical simulation method, the simulation data and the detection data are synchronously compared in the single semi-physical simulation process, so that the semi-physical simulation data are obtained, and the data are uploaded to the SQL database of the cloud through the network to be processed and exported. According to the method, the deviation in the simulation operation process of the axle counter can be reduced, the simulation data of a part of real objects are combined, so that the data are more accurate in the test process, simulink simulation belongs to off-line simulation, the simulation process is kept to have good and stable timeliness, and the reliability of the data is maintained.

Description

technical field [0001] The invention relates to the field of railway equipment, in particular to an EMC semi-physical simulation method for the magnetic field of an axle counter of a rail transit vehicle. Background technique [0002] EMC refers to the ability of a device or system to operate satisfactorily in its electromagnetic environment without causing intolerable electromagnetic interference to any device in its environment. Generally speaking, it refers to the clutter generated by various reasons in the electrical circuit. These clutters not only hinder the normal operation of the electrical circuit, but also have certain harmful effects on the human body. Therefore, various countries have various regulations on this, both electromagnetic compatibility sex. [0003] The axle counter is a signal basic equipment that uses the track sensor installed on the rail waist as the detection means to directly count and check the number of axles passing the train, and judge whet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B17/02
CPCG05B17/02Y02T90/00
Inventor 赵塔穆晓彤付彩欣孙平宋刚刘雪明
Owner CRRC CHANGCHUN RAILWAY VEHICLES CO LTD
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