CN108445390A - To towed High Precision Linear Motor test platform - Google Patents
To towed High Precision Linear Motor test platform Download PDFInfo
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- CN108445390A CN108445390A CN201810245127.8A CN201810245127A CN108445390A CN 108445390 A CN108445390 A CN 108445390A CN 201810245127 A CN201810245127 A CN 201810245127A CN 108445390 A CN108445390 A CN 108445390A
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 4
- 230000002146 bilateral effect Effects 0.000 claims description 2
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- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
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Abstract
To towed High Precision Linear Motor test platform, it is related to linear motor testing field.The present invention is to solve traditional linear motor pushing force loading test device, and flexibility is poor in test process, has a single function and problem that precision is low.The present invention is tested linear motor and is located between two load non iron-core linear motors, No.1 slide carriage and No. two slide carriages are supported on by air supporting on pedestal, No.1 slide carriage is fixedly connected with two loads with the mover of non iron-core linear motor simultaneously, No. two slide carriages are fixedly connected with the mover of tested linear motor, No.1 slide carriage is connected with No. two slide carriages by force snesor, the pulling force that force snesor is used to acquire the power output of tested linear motor or be applied on tested linear motor rotor, linear grating is used to acquire the displacement of tested linear motor rotor, linear motor driver is loaded for driving two load non iron-core linear motors, tested linear motor driver is for driving tested linear motor.The present invention is suitable for measuring linear motor parameter.
Description
Technical field
The invention belongs to linear motor testing fields.
Background technology
In modern processing industry field, many occasions such as laser cutting, high speed grinding machine, fine turning lathe, machining center
It is required for high-precision linear motion at high speed, and traditional method can only be intermediate by means of electric rotating motivation and ball screw etc.
Link is moved along a straight line, this is just inevitably present, and inertia is big, friction is big, has the shortcomings that backlass.In recent years, with
The progress of techniques of linear motor, more and more occasions start directly to be moved along a straight line using it.Due to using direct
Actuation techniques, linear motor have many advantages, such as that speed is fast, acceleration is high, positioning accuracy is high, stroke is long and dynamic response is fast, and this
Exactly meet the requirement of high-speed ＆ precise progressive die technology.
But whether the linear motor performance and characteristic developed or bought for system requirements meet the requirements, such as
What makes correct, objective appraisal to linear induction motor system performance, and ripe linear induction motor system test equipment is required for
It completes.
Traditional linear motor pushing force loading test device as shown in Fig. 2, the device by system platform, linear motor it is dynamic
Son, the stator of linear motor, pulley, transmission rope and counterweight composition.By pulley and transmission rope, the own wt of counterweight is added
Onto the mover of linear motor, forms unidirectional pulling force and be loaded on linear motor.It is continuously increased the weight of counterweight, works as straight line
When motor starts uniform motion, the brake force of linear motor is equal to the weight of counterweight, and the maximum for obtaining linear motor afterwards is static
Power.But the test device has the disadvantage that：
(1) when test load thrust, one direction can only be carried out, one way measures, unsuitable short stroke linear motor test；
(2) loading force is unable to consecutive variations, can only change load by adding or reducing counterweight；
(3) due to needing to overcome the acceleration of counterweight, accelerating sections to be unable to measure when accelerating, at the uniform velocity state can only be measured, and
Testing time is long；
(4) system uses transmission rope, and when load generates deformation, and when movement will produce larger thrust disturbance, to influence
Measuring accuracy；
(5) measurement process is complicated, and measuring accuracy is low；
(6) test parameter is single, can only be measured to linear motor static force；
(7) static parameter can only be tested, system performance dynamic property, characteristic test can not be completed.
In conclusion traditional linear motor pushing force loading test device is during the test, its own is measured flexible
Property is poor, have a single function and precision is low.
Invention content
The present invention is to solve traditional linear motor pushing force loading test device, and flexibility is poor in test process, work(
The single and low precision problem of energy, is now provided to towed High Precision Linear Motor test platform.
To towed High Precision Linear Motor test platform, including：2, two pedestal 1, No.1 slide carriage load non iron-cores are straight
Line motor 3, load linear motor driver, tested linear motor driver, No. two slide carriages 4, force snesor 6 and linear grating；
Two loads are each attached to the stator of the stator of non iron-core linear motor 3 and tested linear motor 5 on pedestal 1,
Two load non iron-core linear motors 3 and tested linear motor 5 are mutually parallel, and tested linear motor 5 is located at two loads
With between non iron-core linear motor 3,
No.1 slide carriage 2 and No. two slide carriages 4 are supported on by air supporting on pedestal 1, and No.1 slide carriage 2 is used with two loads simultaneously
The mover of non iron-core linear motor 3 is fixedly connected, and No. two slide carriages 4 are fixedly connected with the mover of tested linear motor 5, No.1 slide carriage
2 are connected with No. two slide carriages 4 by force snesor 6,
The drawing that force snesor 6 is used to acquire the power output of tested linear motor 5 or be applied on 5 mover of tested linear motor
Power,
Linear grating is used to acquire the displacement of 5 mover of tested linear motor,
It loads linear motor driver and uses non iron-core linear motors 3 for driving two to load,
Tested linear motor driver is for driving tested linear motor 5.
Main advantages of the present invention：
(1) test platform of the present invention by the way of dragging using to being loaded, it can be achieved that two-way test；
(2) test platform of the present invention is loaded using two loads with non iron-core linear motor, easy to control reliable, is added
Carrying power can continuously adjust in tested linear motor motion process, improve system testing precision；
(3) test platform architecture of the present invention is simple, easy to operate simple, reliability height；
(4) slide carriage of test platform of the present invention is all made of air supporting support, has been inherently eliminated frictional force in test process
Influence, substantially increase the precision of test platform；
(5) test platform of the present invention may be implemented the detent force to linear motor, static thrust, dynamic thrust, force oscillation,
Thrust coefficient, thrust linearity parameters are tested, and the performance of system is high, multiple functional；
(6) interference accelerated when counterweight driving with transmission rope is avoided.
Description of the drawings
Fig. 1 is the structural schematic diagram to towed High Precision Linear Motor test platform described in specific implementation mode one；
The structural schematic diagram of linear motor pushing force loading test device traditional Fig. 2.
Specific implementation mode
Specific implementation mode one：Illustrate present embodiment referring to Fig.1, described in present embodiment to towed high-precision
Linear motor test platform, including：Pedestal 1,2, two load non iron-core linear motors 3 of No.1 slide carriage, load linear motor
Driver, tested linear motor driver, No. two slide carriages 4, force snesor 6 and linear grating；
Two loads are each attached to the stator of the stator of non iron-core linear motor 3 and tested linear motor 5 on pedestal 1,
Two load non iron-core linear motors 3 and tested linear motor 5 are mutually parallel, and tested linear motor 5 is located at two loads
With between non iron-core linear motor 3.Using tested linear motor 5 to realizing load by the way of dragging, using two load nothings
Ironcore linear motor 3 is loaded, and loading accuracy is high, easy to control reliable, is advantageously ensured that load barycenter is stablized, is improved test
Precision.Reciprocal load can be achieved, and loading force can continuously adjust in tested 5 motion process of linear motor and in tested electricity
It equally can be achieved to stablize load when machine operates in fair speed.
No.1 slide carriage 2 and No. two slide carriages 4 are supported on by air supporting on pedestal 1, and No.1 slide carriage 2 is used with two loads simultaneously
The mover of non iron-core linear motor 3 is fixedly connected, and No. two slide carriages 4 are fixedly connected with the mover of tested linear motor 5, No.1 slide carriage
2 are connected with No. two slide carriages 4 by force snesor 6.
The drawing that force snesor 6 is used to acquire the power output of tested linear motor 5 or be applied on 5 mover of tested linear motor
Power.
Linear grating is used to acquire the displacement of 5 mover of tested linear motor.
Linear motor driver is loaded for driving two load non iron-core linear motors 3, load non iron-core straight line
The winding input terminal of motor 3 and the current output terminal of load linear motor driver link together.
Tested linear motor driver is for driving tested linear motor 5.
Described further includes two crash cushions, two crash cushions point to towed High Precision Linear Motor test platform
It is not fixed on the both ends of pedestal 1, for stopping No.1 slide carriage 2 and No. two slide carriages 4.
Described further includes AC and DC programmable power supply to towed High Precision Linear Motor test platform, and AC and DC is programmable
Power supply is used to be passed through electric current to the winding of tested linear motor 5, and AC and DC programmable power supply is additionally operable to drive for load linear motor
Dynamic device and the power supply of tested linear motor driver.
Two load non iron-core linear motors 3 are single-side structural or bilateral structure.
The material of pedestal 1, No.1 slide carriage 2 and No. two slide carriages 4 is marble.
The scale grating of linear grating is pasted onto on pedestal 1, and two reading heads of linear grating are separately fixed at No.1 and slip
On plate 2 and No. two slide carriages 4.
It is set on pedestal 1 there are two strip bulge, two load non iron-core linear motors 3 are located at two strip bulges
Both sides, be tested linear motor 5 and be located between two strip bulges,
Two strip bulges also are provided on No.1 slide carriage 2 and No. two slide carriages 4, the bar shaped of No.1 slide carriage 2 and No. two slide carriages 4 is convex
Rise with the strip bulge of pedestal 1 with respect to and length direction it is identical, the strip bulge of No.1 slide carriage 2 and No. two slide carriages 4 is located at pedestal 1
Strip bulge between, between No.1 slide carriage 2 and the strip bulge and the strip bulge of pedestal 1 of No. two slide carriages 4 be air gap, the two
Realize air supporting support.Air supporting supports the influence for being inherently eliminated frictional force in test process, substantially increases test platform
Precision.
The above-mentioned operating mode to towed High Precision Linear Motor test platform is as follows：
1, the detent force for being tested linear motor 5 is measured, detailed process is：
Keep the winding open circuit of 5 subpart of tested linear motor, two loads tested straight with the dragging of non iron-core linear motor 3
The mover of line motor 5 is low speed linear uniform motion, speed v≤0.001m/s, in 5 uniform motion process of tested linear motor
In, the movement position of 5 mover of tested linear motor is read and recorded from linear grating ruler, while passing through force snesor reading and position
Corresponding sensor readings are set, each position sensor readings obtained are averaged, then with each position power
Sensor reading subtracts average value, you can obtains detent force corresponding with each position.
2, measuring the static thrust, the thrust linearity and thrust coefficient, detailed process for being tested linear motor 5 is：
The arbitrary two-phase in the three-phase windings of tested linear motor 5 is given to be passed through direct current using AC and DC programmable power supply
Flow I1, two loads are dragged with non iron-core linear motor 3 to be tested the mover of linear motor 5 and does the step motion of half step distance, in quilt
It surveys during the mover step motion of linear motor 5, the movement position of mover is read and recorded from linear grating ruler, is passed through simultaneously
Force snesor reads sensor readings corresponding with position, that is, obtains static push force value corresponding with each position.Winding is logical
The DC current entered can be different values, so as to obtain the linear motor static push force curve under different electric currents, by painting
Make peak value static thrust F under different electric currentsmax1Curve, so that it may to determine the thrust linearity of linear motor.Meanwhile it can be calculated
The thrust coefficient of tested linear motor：
3, the thrust and force oscillation for being tested linear motor 5 are measured, it is specific as follows：
Tested linear motor 5 is driven to move in a straight line using tested linear motor driver, using thrust control model；Two
A load uses speed control mode with non iron-core linear motor 3, and is operated in dynamic brake state.Make tested linear motor 5
On each friction speed point, two loads apply braking with non iron-core linear motor 3 to tested linear motor 5 for stable operation
Power is continuously measured with force snesor and records the thrust output in 5 entire stroke of tested linear motor；Meanwhile it finding out maximum and pushing away
Power FmaxWith minimum thrust Fmin(i.e. instantaneous value) calculates force oscillation rate F (%) using following formula：
Present embodiment propose to towed High Precision Linear Motor test platform, determining for tested linear motor can be completed
The high precision measurement of position power, static thrust, dynamic thrust, force oscillation, thrust coefficient, the thrust linearity, i.e.,：The same platform energy
Enough complete the performance test of different size linear motor.The test platform that present embodiment proposes is simple, convenient, and control is held
Easily, flexibility is big, and reliability is high, and the interference of frictional force, substantially increases loading accuracy and measuring accuracy when eliminating load.
Claims (7)
1. pair towed High Precision Linear Motor test platform, which is characterized in that including：Pedestal (1), No.1 slide carriage (2), two plus
It carries and is passed with non iron-core linear motor (3), load linear motor driver, tested linear motor driver, No. two slide carriages (4), power
Sensor (6) and linear grating；
Two loads are each attached to pedestal (1) with the stator of the stator of non iron-core linear motor (3) and tested linear motor (5)
On, two loads are mutually parallel with non iron-core linear motor (3) and tested linear motor (5), and tested linear motor (5) is located at
Between two load non iron-core linear motors (3),
No.1 slide carriage (2) and No. two slide carriages (4) are supported on by air supporting on pedestal (1), No.1 slide carriage (2) and meanwhile with two plus
Load is fixedly connected with the mover of non iron-core linear motor (3), and the mover of No. two slide carriages (4) and tested linear motor (5), which is fixed, to be connected
It connecing, No.1 slide carriage (2) is connected with No. two slide carriages (4) by force snesor (6),
Force snesor (6) is used to acquire the power output of tested linear motor (5) or is applied on tested linear motor (5) mover
Pulling force,
Linear grating is used to acquire the displacement of tested linear motor (5) mover,
It loads linear motor driver and uses non iron-core linear motors (3) for driving two to load,
Tested linear motor driver is for driving tested linear motor (5).
2. according to claim 1 to towed High Precision Linear Motor test platform, which is characterized in that further include two anti-
Buffer is hit, two crash cushions are separately fixed at the both ends of pedestal (1).
3. according to claim 1 to towed High Precision Linear Motor test platform, which is characterized in that further include cross, straight
Stream programmable power supply, AC and DC programmable power supply are used for as tested linear motor (5), load linear motor driver and are tested
Linear motor driver is powered.
4. according to claim 1,2 or 3 to towed High Precision Linear Motor test platform, which is characterized in that two add
It is single-side structural or bilateral structure to carry with non iron-core linear motor (3).
5. according to claim 1,2 or 3 to towed High Precision Linear Motor test platform, which is characterized in that pedestal
(1), No.1 slide carriage (2) and the material of No. two slide carriages (4) are marble.
6. according to claim 1,2 or 3 to towed High Precision Linear Motor test platform, which is characterized in that line light
The scale grating of grid is pasted onto on pedestal (1), and two reading heads of linear grating are separately fixed at No.1 slide carriage (2) and No. two are slipped
On plate (4).
7. according to claim 1,2 or 3 to towed High Precision Linear Motor test platform, which is characterized in that pedestal (1)
On set there are two strip bulge, two load the both sides that two strip bulges are located at non iron-core linear motor (3), tested
Linear motor (5) is located between two strip bulges,
It also is provided with two strip bulges, the item of No.1 slide carriage (2) and No. two slide carriages (4) on No.1 slide carriage (2) and No. two slide carriages (4)
Shape protrusion is opposite with the strip bulge of pedestal (1) and length direction is identical, and the bar shaped of No.1 slide carriage (2) and No. two slide carriages (4) is convex
It rises between the strip bulge of pedestal (1), the bar shaped of the strip bulge and pedestal (1) of No.1 slide carriage (2) and No. two slide carriages (4)
It is air gap between protrusion, the two realizes air supporting support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810245127.8A CN108445390A (en) | 2018-03-23 | 2018-03-23 | To towed High Precision Linear Motor test platform |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810245127.8A CN108445390A (en) | 2018-03-23 | 2018-03-23 | To towed High Precision Linear Motor test platform |
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| CN108445390A true CN108445390A (en) | 2018-08-24 |
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| CN201810245127.8A Pending CN108445390A (en) | 2018-03-23 | 2018-03-23 | To towed High Precision Linear Motor test platform |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110412465A (en) * | 2019-08-06 | 2019-11-05 | 哈尔滨工业大学 | Double lead-screw synchronizes drive type straight-line electromechanical testing platform |
| CN110426630A (en) * | 2019-09-06 | 2019-11-08 | 哈尔滨工业大学 | Single slide carriage is to towed linear motor test platform |
| CN110631754A (en) * | 2019-08-30 | 2019-12-31 | 歌尔股份有限公司 | Linear motor thrust and thrust fluctuation testing device and testing system |
| CN115014619A (en) * | 2022-06-02 | 2022-09-06 | 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） | Permanent magnet synchronous linear motor test platform |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001218497A (en) * | 2000-01-31 | 2001-08-10 | Sumitomo Heavy Ind Ltd | Method of measuring thrust ripple in linear motor |
| JP2002084781A (en) * | 2000-06-20 | 2002-03-22 | Nikon Corp | Linear motor inspection device |
| CN102096042A (en) * | 2010-12-07 | 2011-06-15 | 哈尔滨工业大学 | System for testing linear motor characteristics |
| CN102375121A (en) * | 2011-09-22 | 2012-03-14 | 哈尔滨工业大学 | Loading test device for dynamic braking linear motors |
| CN102435944A (en) * | 2011-08-25 | 2012-05-02 | 哈尔滨工业大学 | Device and method for testing force characteristic of linear electric motor |
| CN102445659A (en) * | 2011-09-22 | 2012-05-09 | 哈尔滨工业大学 | Energy feedback type linear electric motor testing and loading device |
| CN107314851A (en) * | 2017-07-31 | 2017-11-03 | 哈尔滨工业大学 | Linear motor thrust testing device and the method using the measurement device force oscillation |
-
2018
- 2018-03-23 CN CN201810245127.8A patent/CN108445390A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001218497A (en) * | 2000-01-31 | 2001-08-10 | Sumitomo Heavy Ind Ltd | Method of measuring thrust ripple in linear motor |
| JP2002084781A (en) * | 2000-06-20 | 2002-03-22 | Nikon Corp | Linear motor inspection device |
| CN102096042A (en) * | 2010-12-07 | 2011-06-15 | 哈尔滨工业大学 | System for testing linear motor characteristics |
| CN102435944A (en) * | 2011-08-25 | 2012-05-02 | 哈尔滨工业大学 | Device and method for testing force characteristic of linear electric motor |
| CN102375121A (en) * | 2011-09-22 | 2012-03-14 | 哈尔滨工业大学 | Loading test device for dynamic braking linear motors |
| CN102445659A (en) * | 2011-09-22 | 2012-05-09 | 哈尔滨工业大学 | Energy feedback type linear electric motor testing and loading device |
| CN107314851A (en) * | 2017-07-31 | 2017-11-03 | 哈尔滨工业大学 | Linear motor thrust testing device and the method using the measurement device force oscillation |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110412465A (en) * | 2019-08-06 | 2019-11-05 | 哈尔滨工业大学 | Double lead-screw synchronizes drive type straight-line electromechanical testing platform |
| CN110631754A (en) * | 2019-08-30 | 2019-12-31 | 歌尔股份有限公司 | Linear motor thrust and thrust fluctuation testing device and testing system |
| CN110426630A (en) * | 2019-09-06 | 2019-11-08 | 哈尔滨工业大学 | Single slide carriage is to towed linear motor test platform |
| CN110426630B (en) * | 2019-09-06 | 2024-03-19 | 哈尔滨工业大学 | Single slide carriage opposite-dragging type linear motor test platform |
| CN115014619A (en) * | 2022-06-02 | 2022-09-06 | 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） | Permanent magnet synchronous linear motor test platform |
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Application publication date: 20180824 |