CN102353492A - Electromagnetic thrust of linear motor and thrust fluctuation test apparatus - Google Patents
Electromagnetic thrust of linear motor and thrust fluctuation test apparatus Download PDFInfo
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- CN102353492A CN102353492A CN2011101734009A CN201110173400A CN102353492A CN 102353492 A CN102353492 A CN 102353492A CN 2011101734009 A CN2011101734009 A CN 2011101734009A CN 201110173400 A CN201110173400 A CN 201110173400A CN 102353492 A CN102353492 A CN 102353492A
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- electric motors
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Abstract
The invention discloses an electromagnetic thrust of a linear motor and a thrust fluctuation test apparatus. The apparatus comprises a load linear motor, a drawing force transducer, a raster ruler and a data processor. Besides, one end of the drawing force transducer is connected with the load linear motor and the other end of the drawing force transducer is connected with a to-be-detected linear motor; a signal output terminal of the drawing force transducer is connected with the data processor; the load linear motor and the to-be-detected linear motor are arranged on the raster ruler; and the load linear motor is a gullet-free linear motor with magnetic suspension. According to the invention, the structure is simple and the testing precision is high; therefore, the apparatus is suitable for an electromagnetic thrust of a linear motor and a thrust fluctuation test; and the apparatus can also be applied to a test on a dynamic performance of a motor.
Description
Technical field
The present invention relates to a kind of high-precision proving installation.Specifically a kind of electromagnetic linear motor thrust and force oscillation proving installation that is used to test degree of precision.
Background technology
Linear electric motors are a kind of propulsion system that electric energy are directly changed into straight-line mechanical energy.Use linear electric motors, expectation obtains the electromagnetic push that motor provides exactly, so one of content that dynamic thrust is exactly the linear electric motors emphasis to be detected; And force oscillation is the reason that motor oscillating and noise produce, and particularly when slow running, also possibly cause resonance, thereby worsen its servo operation characteristic.Generally speaking, force oscillation can produce many adverse influences.Therefore, the test of force oscillation is to analyze and the main contents of studying electric machine operating characteristic and performance.
Electromagnetic linear motor thrust or detent force proving installation commonly used are as shown in Figure 1; Among Fig. 1, the 11st, electric rotating machine, 12 worm and gears, the 13rd, fixed pulley, the 14th, pulling force sensor, the 15th, linear motor rotor, the 16th, linear motor stator electric, the 17th, grating, the 18th, weight.The problem of the maximum that this device exists is in measuring process, and fixed pulley and rope can produce friction force before, and this friction force can't eliminate, and can influence the measuring accuracy of device, can't satisfy the requirement of some high-acruracy surveys.
Summary of the invention
For solve above-mentioned existing measurement mechanism can't overcome friction the deficiency of influence, the purpose of this invention is to provide a kind of electromagnetic linear motor thrust and force oscillation proving installation, this apparatus structure is simple, measuring accuracy is high.
The objective of the invention is to realize through following technical scheme:
A kind of electromagnetic linear motor thrust and force oscillation proving installation; It is characterized in that: this device comprises load linear electric motors, pulling force sensor, grating chi and data processor; One end of pulling force sensor is connected with the load linear electric motors, and the other end of pulling force sensor is connected with linear electric motors to be measured; The signal output part of pulling force sensor is connected with data processor; Load linear electric motors and linear electric motors to be measured all are arranged on the grating chi; Said load linear electric motors are linear electric motors of magnetic levitation, no teeth groove.
Among the present invention, data processor comprises data acquisition module, controller and drive unit, and data acquisition module receives the signal of pulling force sensor and carries out fft analysis, sends signal to controller simultaneously the load linear electric motors are carried out drive controlling.Controller is connected with host computer.
Magnetic levitation, no teeth groove linear electric motors zerofriction force when operation, and detent force is minimum.Motor in the magnetic suspension motor, do not contact, so can not produce friction force between mover and the stator when operation because do not have physics between mover and the stator; In the linear electric motors of no teeth groove,, when making the motor operation, do not have slot effect, so it is minimum that the size of detent force is reduced to because adopted no teeth groove structure.
The present invention adopts magnetic levitation, no teeth groove linear electric motors, is applied to the test of electromagnetic linear motor thrust and force oscillation, has following advantage:
Zerofriction force and detent force were minimum when the linear electric motors of (1) magnetic levitation, no teeth groove moved, and can amplitude peak reduce the influence of extraneous factor to measurement result.
(2) because overcome the influence of some extraneous factors, the measurement result of this device is more accurate, can satisfy more high-precision test request.
(3) because overcome the influence of friction force, this device also can be used for the test of motor dynamic property.
The present invention is simple in structure, measuring accuracy is high, is applicable in the test of electromagnetic linear motor thrust and force oscillation, and can be used for the test of motor dynamic property.
Description of drawings
Fig. 1 is prior art cathetus motor electromagnetic thrust or detent force proving installation synoptic diagram.
Fig. 2 is a structural representation of the present invention.
Fig. 3 is a theory diagram of the present invention.
Embodiment
A kind of electromagnetic linear motor thrust of the present invention and force oscillation proving installation are seen Fig. 2 and Fig. 3.This device comprises load linear electric motors 1, pulling force sensor 2, grating chi 3 and data processor 4, and an end of pulling force sensor 2 is connected with load linear electric motors 1, and the other end of pulling force sensor 2 is connected with linear electric motors 5 to be measured; The signal output part of pulling force sensor 2 is connected with data processor 4; Load linear electric motors 1 all are arranged on the grating chi 3 with linear electric motors 5 to be measured; Load linear electric motors 1 are the linear electric motors of magnetic levitation, no teeth groove.
Because the load linear electric motors adopt magnetic levitation, no teeth groove linear electric motors, zerofriction force and detent force were minimum when this kind motor moved, and extraneous factor such as can amplitude peak reduce friction is to the influence of measurement result.
Concrete method of testing is:
Through controller drives linear electric motors to be measured, the motion of drive load linear electric motors, the middle pulling force sensor that connects can be tested the fluctuation situation of thrust.The signals of exporting as the linear electric motors of load such as voltage, current amplitude and waveform change and can be obtained by data acquisition module; The variation of signals such as the voltage of load linear electric motors, current amplitude and waveform is the load-carrying variation of linear electric motors to be measured; Situation according to load variations is tested by the electromagnetic push parameter of measured motor by pulling force sensor; Change through controller Different control signal; Can obtain the situation of change of tested electromagnetic linear motor thrust, the thrust data that data acquisition module obtains can be passed through the composition of fft analysis force oscillation.
The present invention is simple in structure, measuring accuracy is high, is applicable in the test of electromagnetic linear motor thrust and force oscillation, and can be used for the test of motor dynamic property.
Claims (3)
1. electromagnetic linear motor thrust and force oscillation proving installation; It is characterized in that: this device comprises load linear electric motors (1), pulling force sensor (2), grating chi (3) and data processor (4); One end of pulling force sensor (2) is connected with load linear electric motors (1), and the other end of pulling force sensor (2) is connected with linear electric motors to be measured (5); The signal output part of pulling force sensor (2) is connected with data processor (4); Load linear electric motors (1) and linear electric motors to be measured (5) all are arranged on the grating chi (3); Said load linear electric motors (1) are the linear electric motors of magnetic levitation, no teeth groove.
2. electromagnetic linear motor thrust according to claim 1 and force oscillation proving installation; It is characterized in that: data processor (4) comprises data acquisition module (41) and controller (42); Data acquisition module (41) receives the signal of pulling force sensor (2) and carries out fft analysis, sends signal to controller simultaneously load linear electric motors (1) are carried out drive controlling.
3. electromagnetic linear motor thrust according to claim 2 and force oscillation proving installation is characterized in that: controller (42) is connected with host computer (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101734009A CN102353492A (en) | 2011-06-27 | 2011-06-27 | Electromagnetic thrust of linear motor and thrust fluctuation test apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101734009A CN102353492A (en) | 2011-06-27 | 2011-06-27 | Electromagnetic thrust of linear motor and thrust fluctuation test apparatus |
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| CN102353492A true CN102353492A (en) | 2012-02-15 |
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| CN2011101734009A Pending CN102353492A (en) | 2011-06-27 | 2011-06-27 | Electromagnetic thrust of linear motor and thrust fluctuation test apparatus |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013243848A (en) * | 2012-05-21 | 2013-12-05 | Thk Co Ltd | Motor control device and motor control method |
| CN103926031A (en) * | 2014-04-24 | 2014-07-16 | 中南大学 | Thrust detection method and system for linear motor |
| CN104198938A (en) * | 2014-09-02 | 2014-12-10 | 吉林恒隆控股集团有限公司 | Dynamic testing system for permanent-magnetic synchronous linear motor |
| CN108181036A (en) * | 2017-12-28 | 2018-06-19 | 安徽大学 | A kind of contactless linear motor pushing force fluctuation measuring method |
| CN113686478A (en) * | 2021-07-02 | 2021-11-23 | 安徽大学 | Continuous accurate loading device for thrust measurement of permanent magnet linear motor |
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| US20030144805A1 (en) * | 2002-01-29 | 2003-07-31 | Sumitomo Heavy Industries, Ltd. | Thrust ripple measuring apparatus and method in linear motor |
| JP2008022694A (en) * | 2006-06-16 | 2008-01-31 | Shinshu Univ | Detection device and detection method for dynamic thrust acting on moving body, and electromagnetic force detection device |
| CN201237631Y (en) * | 2008-07-22 | 2009-05-13 | 北京康达永宜科技有限公司 | Linear electric motor performance parameter test device |
| CN102096042A (en) * | 2010-12-07 | 2011-06-15 | 哈尔滨工业大学 | System for testing linear motor characteristics |
| CN202110019U (en) * | 2011-06-27 | 2012-01-11 | 东南大学 | Linear motor electromagnetic thrust and thrust fluctuation testing apparatus |
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2011
- 2011-06-27 CN CN2011101734009A patent/CN102353492A/en active Pending
Patent Citations (5)
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| US20030144805A1 (en) * | 2002-01-29 | 2003-07-31 | Sumitomo Heavy Industries, Ltd. | Thrust ripple measuring apparatus and method in linear motor |
| JP2008022694A (en) * | 2006-06-16 | 2008-01-31 | Shinshu Univ | Detection device and detection method for dynamic thrust acting on moving body, and electromagnetic force detection device |
| CN201237631Y (en) * | 2008-07-22 | 2009-05-13 | 北京康达永宜科技有限公司 | Linear electric motor performance parameter test device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013243848A (en) * | 2012-05-21 | 2013-12-05 | Thk Co Ltd | Motor control device and motor control method |
| CN103926031A (en) * | 2014-04-24 | 2014-07-16 | 中南大学 | Thrust detection method and system for linear motor |
| CN103926031B (en) * | 2014-04-24 | 2016-01-20 | 中南大学 | The thrust measurement method of linear electric motors and detection system |
| CN104198938A (en) * | 2014-09-02 | 2014-12-10 | 吉林恒隆控股集团有限公司 | Dynamic testing system for permanent-magnetic synchronous linear motor |
| CN108181036A (en) * | 2017-12-28 | 2018-06-19 | 安徽大学 | A kind of contactless linear motor pushing force fluctuation measuring method |
| CN108181036B (en) * | 2017-12-28 | 2020-04-14 | 安徽大学 | Non-contact linear motor thrust fluctuation measurement method |
| CN113686478A (en) * | 2021-07-02 | 2021-11-23 | 安徽大学 | Continuous accurate loading device for thrust measurement of permanent magnet linear motor |
| CN113686478B (en) * | 2021-07-02 | 2023-09-15 | 安徽大学 | Continuous accurate loading device for thrust measurement of permanent magnet linear motor |
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Application publication date: 20120215 |