CN107894578B - A method of for testing magnetic suspension system suspendability at various speeds - Google Patents
A method of for testing magnetic suspension system suspendability at various speeds Download PDFInfo
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- CN107894578B CN107894578B CN201711077091.9A CN201711077091A CN107894578B CN 107894578 B CN107894578 B CN 107894578B CN 201711077091 A CN201711077091 A CN 201711077091A CN 107894578 B CN107894578 B CN 107894578B
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/12—Measuring magnetic properties of articles or specimens of solids or fluids
- G01R33/1261—Measuring magnetic properties of articles or specimens of solids or fluids using levitation techniques
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Abstract
The invention discloses a kind of methods for testing magnetic suspension system suspendability at various speeds.Method includes the following steps: (1) establishes electromagnetic path, electromagnetic path includes ferromagnetism bulk, and is set to several first electromagnetic coils of ferromagnetism bulk two sides, and mutually independent second electromagnetic coil is provided on the first electromagnetic coil；(2) so that car body holding is suspended fixedly, reset the turn-on time between adjacent second electromagnetic coil, make K1~KNIt is sequentially communicated；(3) pass through formula: V=2fL you can get it simulation magnetic suspension train the speed of service；Wherein, f is the inverse of turn-on time；(4) it after setting turn-on time, then is controlled by controller and is passed through K1~KNElectricity, the magnetic field size of generation is adjusted, to measure the suspendability of magnetic suspension train at various speeds.The method of the present invention can detect that suspendability of the train under the different speeds of service.
Description
Technical field
The invention belongs to magnetic levitation technology fields, and in particular to one kind is hanged at various speeds for testing magnetic suspension system
The method of buoyancy energy.
Background technique
When being measured to the magnetic suspension system speed of service, traditional method usually builds a permanent magnetism rail first
Road then again under outer power drive, moves forward or back car body along tracks of permanent magnetism, is led with testing vehicle body superconduction block material with permanent magnetism
Electromagnetic coupling relationship change situation and the car body speed of service between rail, but after prolonged use due to tracks of permanent magnetism,
The case where will appear Magnetic field inhomogeneity, and build the with high costs of tracks of permanent magnetism.
Summary of the invention
For above-mentioned deficiency in the prior art, the present invention provides a kind of for testing magnetic suspension system at various speeds
The method of suspendability, can effectively solve the Magnetic field inhomogeneity occurred in traditional measuring method, can not Accurate Determining car body with lead
Between rail the problem of coupling performance.
A method of for testing magnetic suspension system suspendability at various speeds, comprising the following steps:
(1) electromagnetic path is established, electromagnetic path includes ferromagnetism bulk, and is relatively arranged on ferromagnetism bulk two with the pole S
Several first electromagnetic coils of side, and mutually independent second electromagnetic coil, the second electromagnetism are provided on the first electromagnetic coil
Coil is with K1~KNIt indicates, and spacing is L between the second adjacent electromagnetic coil；First electromagnetic coil and the second electromagnetic coil
It connect with extraneous power supply, and is independently connect with controller, by each first electromagnetic coil of controller independent control and
The on-off of two electromagnetic coils and power supply；
(2) it when testing, by controller, the first electromagnetic coil for keeping ferromagnetism bulk two sides opposite while being connected to, makes magnetic
Suspension car body remains stationary, and then resets the turn-on time between adjacent second electromagnetic coil, makes K1~KNIt is sequentially communicated；
(3) pass through formula: V=2fL you can get it the dry run speed of magnetic suspension train in a stationary situation；Its
In, f is the inverse of turn-on time；
(4) K is being set1~KNBetween turn-on time after, then by controller control be passed through K1~KNElectricity, adjust
Save K1~KNThe magnetic field size of generation, then be set on maglev vehicle by several, and sensor connected to the controller, it surveys
Determine the suspendability of magnetic suspension train at various speeds.
Further, the current direction in step (1) on the left of ferromagnetism bulk in the first electromagnetic coil be from paper to paper
Outside, the current direction in the first electromagnetic coil of right side is by paper extroversion paper.
Further, the current direction in step (1) on the left of ferromagnetism bulk in the second electromagnetic coil be from paper to paper
Outside, the current direction in the second electromagnetic coil of right side is by paper extroversion paper.
Further, the turn-on time in step (2) between adjacent second electromagnetic coil is identical, for the constant greater than 0
Further, controller is singlechip controller or PLC controller in step (2).
Further, K in step (4)1~KNThe electricity being passed through is identical, is sequentially reduced or is sequentially increased.
Further, sensor includes range sensor and displacement sensor in step (4).
The invention has the benefit that
1, the method for the present invention passes through opposite in space to simulate maglev vehicle with the variation of electromagnet in time
The speed answered does not need investment huge fund to build the tracks of permanent magnetism of test, for example, the magnetic suspension that detection speed per hour is 600km/h
When train, need to build the tracks of permanent magnetism of 20km or more to be measured, and the method for the present invention is in the situation for keeping car body motionless
Under, it need to only shorten the turn-on time between adjacent second electromagnetic coil, can be realized, greatly reduce testing cost.
2, due to using electromagnetic coil, there is no there is the problem of Magnetic field inhomogeneity after long-time use, guarantee
The Stability and veracity of velocity measuring.
3, pass through the dry run speed and K of change train1~KNIn be passed through the size of electricity, train can be obtained not
With under operating rate and different magnetic field environment, coupled relation between train body and track passes through the suspendability of train
It is embodied.
Specific embodiment
A specific embodiment of the invention is described below, in order to facilitate understanding by those skilled in the art this hair
It is bright, it should be apparent that the present invention is not limited to the ranges of specific embodiment, for those skilled in the art,
As long as various change is in the spirit and scope of the present invention that the attached claims limit and determine, these variations are aobvious and easy
See, all are using the innovation and creation of present inventive concept in the column of protection.
Embodiment 1
A method of for testing magnetic suspension system suspendability at various speeds, comprising the following steps:
(1) electromagnetic path is established, electromagnetic path includes ferromagnetism bulk, and is relatively arranged on ferromagnetism bulk two with the pole S
Several first electromagnetic coils of side, and mutually independent second electromagnetic coil, the second electromagnetism are provided on the first electromagnetic coil
Coil is with K1~KNIt indicates, and it is 0.4m that spacing, which is L, between the second adjacent electromagnetic coil；First electromagnetic coil and the second electricity
Magnetic coil is connect with extraneous power supply, and is independently connect with controller, by each first electromagnetic wire of controller independent control
The on-off of circle and the second electromagnetic coil and power supply；It is preferred that controller is PLC controller；
(2) when testing, under controller regulation, the first opposite electromagnetic coil of ferromagnetism bulk two sides is connected to simultaneously, is made
Maglev vehicle remains stationary, and then sets the turn-on time between adjacent second electromagnetic coil on the controller again as 0.01s,
Make K1~KNIt is sequentially communicated；F=100Hz at this time；
(3) pass through formula: V=2fL you can get it the dry run speed of magnetic suspension train in a stationary situation: V=2
× 100 × 0.4=80m/s=288km/h；
At this point, velocity variations of the magnetic suspension train in space, are converted into turn-on time between adjacent second electromagnetic coil
Variation, with achieve the purpose that simulate dynamic train running speed；
(4) K is being set1~KNBetween turn-on time after, then by controller control be passed through K1~KNElectricity successively
Increase, adjusts K1~KNThe magnetic field size of generation, then by range sensor connected to the controller and displacement sensor, survey
Cover half intends hoverheight and suspension stability between magnetic suspension train and guide rail.
The hoverheight and suspension stability between magnetic suspension train and guide rail measured at this time, that is, simulation car body
When being run with speed per hour for 288km/h, hoverheight and suspension stability between magnetic suspension train and guide rail, i.e. magnetic suspension train
Suspendability.
Embodiment 2
A method of for testing magnetic suspension system suspendability at various speeds, comprising the following steps:
(1) electromagnetic path is established, electromagnetic path includes ferromagnetism bulk, and is relatively arranged on ferromagnetism bulk two with the pole S
Several first electromagnetic coils of side, and mutually independent second electromagnetic coil, the second electromagnetism are provided on the first electromagnetic coil
Coil is with K1~KNIt indicates, and it is 0.5m that spacing, which is L, between the second adjacent electromagnetic coil；First electromagnetic coil and the second electricity
Magnetic coil is connect with extraneous power supply, and is independently connect with controller, by each first electromagnetic wire of controller independent control
The on-off of circle and the second electromagnetic coil and power supply；It is preferred that controller is PLC controller；
(2) when testing, under controller regulation, the first opposite electromagnetic coil of ferromagnetism bulk two sides is connected to simultaneously, is made
Maglev vehicle remains stationary, and then sets the turn-on time between adjacent second electromagnetic coil on the controller again as 0.02s,
Make K1~KNIt is sequentially communicated；F=50Hz at this time；
(3) pass through formula: V=2fL you can get it the dry run speed of magnetic suspension train in a stationary situation: V=2
× 50 × 0.5=50m/s=180km/h；
At this point, velocity variations of the magnetic suspension train in space, are converted into turn-on time between adjacent second electromagnetic coil
Variation, with achieve the purpose that simulate dynamic train running speed；
(4) K is being set1~KNBetween turn-on time after, then by controller control be passed through K1~KNElectricity keep
It is constant, control K1~KNThe magnetic field size of generation is constant, then passes through range sensor connected to the controller and displacement sensing
Device, hoverheight and suspension stability between measurement simulation magnetic suspension train and guide rail.
The hoverheight and suspension stability between magnetic suspension train and guide rail measured at this time, that is, simulation car body
When being run with speed per hour for 180km/h, hoverheight and suspension stability between magnetic suspension train and guide rail, i.e. magnetic suspension train
Suspendability.
Embodiment 3
A method of for testing magnetic suspension system suspendability at various speeds, comprising the following steps:
(1) electromagnetic path is established, electromagnetic path includes ferromagnetism bulk, and is relatively arranged on ferromagnetism bulk two with the pole S
Several first electromagnetic coils of side, and mutually independent second electromagnetic coil, the second electromagnetism are provided on the first electromagnetic coil
Coil is with K1~KNIt indicates, and it is 0.3m that spacing, which is L, between the second adjacent electromagnetic coil；First electromagnetic coil and the second electricity
Magnetic coil is connect with extraneous power supply, and is independently connect with controller, by each first electromagnetic wire of controller independent control
The on-off of circle and the second electromagnetic coil and power supply；It is preferred that controller is PLC controller；
(2) when testing, under controller regulation, the first opposite electromagnetic coil of ferromagnetism bulk two sides is connected to simultaneously, is made
Maglev vehicle remains stationary, and then sets the turn-on time between adjacent second electromagnetic coil on the controller again as 0.01s,
Make K1~KNIt is sequentially communicated；F=100Hz at this time；
(3) pass through formula: V=2fL you can get it the dry run speed of magnetic suspension train in a stationary situation: V=2
× 100 × 0.3=60m/s=216km/h；
At this point, velocity variations of the magnetic suspension train in space, are converted into turn-on time between adjacent second electromagnetic coil
Variation, with achieve the purpose that simulate dynamic train running speed；
(4) K is being set1~KNBetween turn-on time after, then by controller control be passed through K1~KNElectricity successively
Reduce, adjusts K1~KNThe magnetic field size of generation, then by range sensor connected to the controller and displacement sensor, survey
Cover half intends hoverheight and suspension stability between magnetic suspension train and guide rail.
The hoverheight and suspension stability between magnetic suspension train and guide rail measured at this time, that is, simulation car body
When being run with speed per hour for 216km/h, hoverheight and suspension stability between magnetic suspension train and guide rail, i.e. magnetic suspension train
Suspendability.
Embodiment 4
A method of for testing magnetic suspension system suspendability at various speeds, comprising the following steps:
(1) electromagnetic path is established, electromagnetic path includes ferromagnetism bulk, and is relatively arranged on ferromagnetism bulk two with the pole S
Several first electromagnetic coils of side, and mutually independent second electromagnetic coil, the second electromagnetism are provided on the first electromagnetic coil
Coil is with K1~KNIt indicates, and it is 1m that spacing, which is L, between the second adjacent electromagnetic coil；First electromagnetic coil and the second electromagnetism
Coil is connect with extraneous power supply, and is independently connect with controller, by each first electromagnetic coil of controller independent control
With the on-off of the second electromagnetic coil and power supply；It is preferred that controller is PLC controller；
(2) when testing, under controller regulation, the first opposite electromagnetic coil of ferromagnetism bulk two sides is connected to simultaneously, is made
Maglev vehicle remains stationary, then set on the controller again turn-on time between adjacent second electromagnetic coil as
0.005s makes K1~KNIt is sequentially communicated；F=200Hz at this time；
(3) pass through formula: V=2fL you can get it the dry run speed of magnetic suspension train in a stationary situation: V=2
× 200 × 1=400m/s=1440km/h；
At this point, velocity variations of the magnetic suspension train in space, are converted into turn-on time between adjacent second electromagnetic coil
Variation, with achieve the purpose that simulate dynamic train running speed；
(4) K is being set1~KNBetween turn-on time after, then by controller control be passed through K1~KNElectricity successively
Increase, adjusts K1~KNThe magnetic field size of generation, then by range sensor connected to the controller and displacement sensor, survey
Cover half intends hoverheight and suspension stability between magnetic suspension train and guide rail.
The hoverheight and suspension stability between magnetic suspension train and guide rail measured at this time, that is, simulation car body
When being run with speed per hour for 1440km/h, hoverheight and suspension stability between magnetic suspension train and guide rail, i.e. magnetic suspension column
The suspendability of vehicle.
Claims (7)
1. a kind of method for testing magnetic suspension system suspendability at various speeds, which is characterized in that including following step
It is rapid:
(1) electromagnetic path is established, electromagnetic path includes ferromagnetism bulk, and is relatively arranged on ferromagnetism bulk two sides with the pole S
Several first electromagnetic coils, and mutually independent second electromagnetic coil, the second electromagnetic coil are provided on the first electromagnetic coil
Respectively with K1~KNIt indicates, and spacing is L between the second adjacent electromagnetic coil；First electromagnetic coil and the second electromagnetic coil are equal
It connect with extraneous power supply, and is independently connect with controller, by each first electromagnetic coil of controller independent control and second
The on-off of electromagnetic coil and power supply；
(2) it when testing, by controller, the first electromagnetic coil for keeping ferromagnetism bulk two sides opposite while being connected to, makes magnetic suspension
Car body remains stationary, and then resets the turn-on time between adjacent second electromagnetic coil, makes K1~KNIt is sequentially communicated；
(3) pass through formula: V=2fL you can get it the dry run speed of magnetic suspension train in a stationary situation；Wherein, f is
The inverse of turn-on time；
(4) K is being set1~KNBetween turn-on time after, then by controller control be passed through K1~KNElectricity, adjust K1~
KNThe magnetic field size of generation, then be set on maglev vehicle and sensor connected to the controller by several, measure magnetcisuspension
The suspendability of floating train at various speeds.
2. the method according to claim 1 for testing magnetic suspension system suspendability at various speeds, feature
Be, the current direction on the left of ferromagnetism bulk described in step (1) in the first electromagnetic coil be from paper to outside paper, right side the
Current direction in one electromagnetic coil is by paper extroversion paper.
3. the method according to claim 1 for testing magnetic suspension system suspendability at various speeds, feature
Be, the current direction on the left of ferromagnetism bulk described in step (1) in the second electromagnetic coil be from paper to outside paper, right side the
Current direction in two electromagnetic coils is by paper extroversion paper.
4. the method according to claim 1 for testing magnetic suspension system suspendability at various speeds, feature
It is, the turn-on time between adjacent second electromagnetic coil described in step (2) is identical, for the constant greater than 0.
5. the method according to claim 1 for testing magnetic suspension system suspendability at various speeds, feature
It is, controller described in step (2) is singlechip controller or PLC controller.
6. the method according to claim 1 for testing magnetic suspension system suspendability at various speeds, feature
It is, K described in step (4)1~KNThe electricity being passed through is identical, is sequentially reduced or is sequentially increased.
7. the method according to claim 1 for testing magnetic suspension system suspendability at various speeds, feature
It is, sensor described in step (4) includes range sensor and displacement sensor.
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| CN201711077091.9A CN107894578B (en) | 2017-11-06 | 2017-11-06 | A method of for testing magnetic suspension system suspendability at various speeds |
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| CN201711077091.9A CN107894578B (en) | 2017-11-06 | 2017-11-06 | A method of for testing magnetic suspension system suspendability at various speeds |
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| JP4698468B2 (en) * | 2006-03-31 | 2011-06-08 | 財団法人鉄道総合技術研究所 | Railway vehicle brake performance testing machine and railway vehicle brake performance testing method |
| CN100586756C (en) * | 2008-09-11 | 2010-02-03 | 中国人民解放军国防科学技术大学 | Magnetic suspension system suspension control method |
| CN103522913B (en) * | 2013-10-17 | 2015-10-28 | 中国人民解放军国防科学技术大学 | For suspension control method and the device of EMS type low speed aerotrain |
| CN104477048B (en) * | 2014-11-28 | 2016-06-08 | 中国人民解放军国防科学技术大学 | A kind of electromagnetic type is often led the suspension control method of low-speed maglev train |
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