CN201964983U - Servo motor test bench - Google Patents
Servo motor test bench Download PDFInfo
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- CN201964983U CN201964983U CN2010206722456U CN201020672245U CN201964983U CN 201964983 U CN201964983 U CN 201964983U CN 2010206722456 U CN2010206722456 U CN 2010206722456U CN 201020672245 U CN201020672245 U CN 201020672245U CN 201964983 U CN201964983 U CN 201964983U
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- stator
- test board
- servomotor
- load motor
- flange
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Abstract
The utility model relates to a servo motor test bench, the purpose be provide one kind detect the precision high and with the irrelevant servo motor servo motor test bench of motor speed size. The invention includes test bench and installs in the load motor, and the rotor of load motor and the rotor of being surveyed the servomotor link to each other, and the stator of being surveyed the servomotor links with the servo motor test bench, and the stator and the servo motor test bench flexible connection of load motor, servo motor test bench still are equipped with the pressure sensor of the gyroscopic moment of measuring load motor stator. The invention can detect is surveyed the moment of torsion change process of servomotor when receiving the change of load, detects the influence that the precision did not receive datum speed value size, can satisfy the servomotor moment of torsion measuring of velocity amplitude on a large scale, test results are intuitive, simple .
Description
Technical field
The utility model relates to servomotor and makes the field, and in particular, the utility model is a kind of servomotor test board about the servomotor electric test.
Background technology
Generally, during the electric property of testing of electric motors, to be fixedly connected on the test board respectively by the stator of measured motor and load motor, rotor by the rotor of measured motor and load motor is flexible coupling by shaft coupling, under the situation of being switched on respectively by measured motor and load motor, by measuring various electric parameters, calculate by the various performance parameters of measured motor.The shortcoming of this method of testing is, owing to being obtained indirectly by the various performance parameters of measured motor, so error is bigger; Secondly generally can only obtain mean value, be difficult to obtain instantaneous value.As test during by the moment of torsion of measured motor, electric current and voltage value that can only be by load motor is through calculating, so error is bigger.
Patent Office of the People's Republic of China discloses a CN1869625A document on November 29th, 2006, name is called a kind of servo electric machine type dynamic torque generation system and method thereof, this system connects drive motor and load motor at coupling shaft two ends, by the host computer system input speed, dtc signal is given system controller, the incoming wave shape parameter is set to waveform generator, electric machine controller by system controller and waveform generator input drive motor and load motor produces dynamic torque signal, utilizing drive motor simulation axle is the alternate torque signal of drive end, utilizing load motor simulation axle is the reactive torque signal of load end, but at drive end and the equal loading frequency of load end, humorous time of list that amplitude is adjustable or the inferior torsional vibration signals of multi resonant, and the phase place of drive end and load end can be different, thereby fasten at measured axis and to have loaded abundant dynamic torque signal, the actual dynamic perfromance that can be used for testing all kinds of torque sensors.Though this system is the dynamic perfromance of test torque sensor, also be to calculate corresponding torque parameter by other electric parameter.
In addition, Patent Office of the People's Republic of China discloses a CN1991400A document on July 4th, 2007, name is called a kind of dynamometer machine monitoring system with control and data acquisition function, this system comprises direct supply and power measurement arrangement, and system under test (SUT), they connect mutually with the CAN communication network, are wherein connect by torque sensor by measured motor and load motor, load motor controller and the tested electric machine controller dc bus that then is connected in parallel, thus the direct current measurement of power loop of being incorporated into the power networks formed.This system is connected by torque sensor with load motor by measured motor, is detected the moment of tested rotor by torque sensor.The shortcoming that torque sensor detects moment is: accuracy of detection is relevant with the rotating speed of tested rotor, the too little and precision of big city's influence detection too when rotating speed.And the range of speeds of servomotor is very big, forward per minute commentaries on classics up to ten thousand to and have from per minute is several, so the torque that torque sensor is not suitable for servomotor detects.
Summary of the invention
The utility model is that the servomotor torque detection error that exists in the solution prior art is bigger, and the accuracy of detection problem relevant with the size of rotating speed, the servomotor test board that a kind of accuracy of detection height is provided and has had nothing to do with the motor speed size.
The technical scheme that its technical matters that solves the utility model adopts is: the utility model comprises test board and is installed in load motor on the test board, the rotor of load motor links to each other with the rotor of tested servomotor, the stator of tested servomotor is fixedlyed connected with test board, the stator of load motor and test board flexibly connect, and test board also is provided with the pressure transducer of the turning moment that detects the load motor stator.The stator of load motor and test board flexibly connect, the stator that is load motor can rotor axis be that freely rotate at the center, after tested servomotor and load motor energising rotation, the torque of tested servomotor is delivered on the rotor of load motor by the connection of rotor, because acting force equates with reacting force, on the stator of load motor, produce a torque that equates with tested servomotor torque, with the torque conversion of load motor stator is the pressure that acts on the pressure transducer, by the pressure size on the detected pressures sensor, just can accurately detect the torque of tested servomotor, and irrelevant with the rotating speed size of tested servo motor rotor.
As preferably, the stator of load motor flexibly connects by coupling arrangement and test board, coupling arrangement comprises: flange, at least two bearings, counter flange, flange is fixedlyed connected with test board, bearing is fixedlyed connected with flange, one side of counter flange is provided with slideway, and counter flange flexibly connects by slideway and bearing, and the stator of load motor is fixedlyed connected with counter flange.Though the stator of load motor can not be fixed on the test board in theory, but load motor is produced rock easily like this, influence measuring accuracy, the effect of coupling arrangement is to make being connected of the stator of load motor and test board, when the stator of load motor freely rotates, have very little friction force and can not rock again, thereby guarantee accuracy of detection; The stator of load motor is connected with counter flange, bearing is connected with test board, one side of counter flange is offered slideway, and be enclosed within outside the bearing, counter flange can be rotated around bearing, because the friction force of bearing is very little, counter flange is again to roll to be connected with bearing, friction force is also very little, thereby has reached the purpose that the stator that makes load motor promptly can not rock and have very little friction force.
As preferably, bearing is three.Three points are determined a face, and therefore three bearings can make the stator of load motor have good stability, have less friction force again.
As preferably, the stator of tested servomotor links to each other with test board by flange, the test board upper surface is provided with the little opening pickup groove of crisscross T shape, and the flange that links to each other with tested servo motor stator and the flange that links to each other with bearing are by being bolted on the described pickup groove.When the model change of tested servomotor, rotor thickness, the length of tested servomotor all can change, and comprise that the length of shaft coupling also can change, and make the spacing distance of the stator of the stator of tested servomotor and load motor also need to change; The little opening pickup groove of crisscross T shape is set on the surface of test board, can adjusts the spacing distance of tested servo motor stator and load motor stator easily, the slideway that guarantees counter flange paste mutually with bearing and unlikely Ka Detai tight, increase friction force.
As preferably, test board also is provided with regulating device, regulating device comprises screw mandrel, screw, guide rod, fixed head, regulating wheel, fixed head is fixedlyed connected with test board, one end of guide rod is fixedlyed connected with described fixed head, fix and be slidingly connected by the flange and the guide rod of the flange of measured motor and dead load motor, one end of screw is fixedlyed connected with fixed head, the other end of screw is fixedlyed connected by the flange of measured motor with fixing, one end of screw mandrel is fixedlyed connected with regulating wheel and is meshed with screw, and the other end of screw mandrel is fixedlyed connected with the flange of dead load motor.Since fixing by the spacing distance of the flange of the flange of measured motor and dead load motor adjust whether suitable, friction force size to counter flange and bearing has significant impact, the too little side of counter flange and bearing that may make of distance produces friction, increases friction force; Distance is too big may to make the counter flange generation rock; This all can influence measuring accuracy, adopt the control method of screw mandrel, screw can adjust fixing accurately and rapidly by the spacing distance of the flange of the flange of measured motor and dead load motor, after adjustment is finished, will fix by the little opening pickup groove of the T shape of the flange of the flange of measured motor and dead load motor and test board with bolt again and fix.
As preferably, the stator of load motor is provided with connecting rod, and an end of connecting rod is fixedlyed connected with the stator of load motor, and the other end of connecting rod is corresponding with the pressure test face of pressure transducer.On the stator of load motor, connecting rod is set, can make the torque on the load motor stator change the pressure that is applied on the pressure transducer exactly into, be pressed on the sensitive surface of pressure transducer when an end of connecting rod after, the stator of load motor just no longer rotates, make the torque of rotating on the rotor become force value static on the stator, and static force value accuracy of detection is very high, and irrelevant with the rotating speed size of rotor, has guaranteed accuracy of detection.
The method of testing of a kind of servomotor of the present utility model may further comprise the steps:
A: the stator of tested servomotor is fixedlyed connected with test board, and the stator of load motor and test board flexibly connect;
B: the rotor of tested servomotor is linked to each other by positive coupling with the rotor of load motor;
C: tested servomotor adopts speed control;
D: on load motor, apply the different load of different current analogs;
E: tested servomotor carries out dynamic adjustments according to load torque, makes speed reach stable;
F: change the rotating torques of load motor stator into fixed pressure;
G: the fixation pressure that detects the load motor stator.
Usually just no longer pull down after load motor and test board connect, as long as tested servomotor is fixed on the test board, with positive coupling the rotor of tested servomotor and the rotor of load motor are linked together, after tested servomotor and load motor energising, tested servomotor adopts speed control, make its stable operation on a given velocity amplitude, thereby on load motor, change stator current and change the load size, the rotating speed of tested servomotor changes thereupon, because tested servomotor adopts speed control, the output torque of tested servomotor changes so that the speed of tested servomotor is got back to set-point, with the output torque of tested servomotor also is the moment of torsion of load motor rotor, also be the torque that is subjected to of load motor stator simultaneously, with the torque conversion of load motor stator is fixed pressure, detect the change curve of this fixation pressure, just can detect testing of electric motors its whole transient process under the situation that is subjected to the load force change, have directly perceived, succinct advantage, improve the precision that detects, and be applicable to the detection of any given speed value.
As preferably, also has steps A 1 before the step B: the spacing distance of regulating load motor and tested servomotor.When the output shaft thickness of tested servomotor, when length changes, the length of shaft coupling also can change, and at this moment needs the spacing distance of regulating load motor and tested servomotor.
The beneficial effects of the utility model are: can detect the change in torque process of tested servomotor when being subjected to load variations, accuracy of detection is not subjected to the influence of given speed value size, can satisfy the servomotor moment of torsion detection of velocity amplitude on a large scale, testing result is directly perceived, succinct.
Description of drawings
Fig. 1 is a kind of structural representation of the utility model servomotor test board;
Fig. 2 is a kind of structural representation of the utility model counter flange and bearing.
Among the figure: 1. test board, 2. tested servomotor, 3. load motor, 4. flange, 5. counter flange, 6. pressure transducer, 7. guide rod, 8. screw, 9. screw mandrel, 10. regulating wheel, 11. pickup grooves, 12. terminal boxes, 13. shaft coupling, 14. slideways, 15. bearings, 16. connecting rods, 17. fixed heads.
Embodiment
Below by specific embodiment, and in conjunction with the accompanying drawings the technical solution of the utility model is described in further detail.
Embodiment:
A kind of servomotor test board of present embodiment, referring to Fig. 1, comprise test board 1, be installed in tested servomotor 2, load motor 3 on the test board 1, tested servomotor 2 is fixing with test board 1 by flange 4, and load motor 3 is fixed on the test board 1 by counter flange 5 and flange 4; Be provided with the little opening pickup groove 11 of crisscross T shape on the surface of test board 1, flange 4 is by being bolted on the pickup groove 11, on test board 1, also be provided with regulating device, regulating device comprises fixed head 17, screw 8, two guide rods 7, screw mandrel 9, regulating wheel 10, be provided with two through holes in the bottom of flange 4, two guide rods 7 pass through hole, and fixed head 17 is fixedly connected on a side on test board 1 surface, and an end of guide rod 7 is fixedlyed connected with fixed head 17; Screw 8 is a tubular structure, one end of screw 8 links to each other with fixed head 17, the other end of screw 8 is fixedly connected with the flange 4 that is connected tested servomotor 2, screw mandrel 9 passes screw 8 and meshes with screw 8, one end of screw mandrel 9 passes fixed head 17 and links to each other with regulating wheel 10, and the other end of screw mandrel 9 links to each other with the flange 4 that is connected load motor 3; On the flange 4 that connects load motor 3, also be provided with pressure transducer 6; On test board 1, also be provided with two terminal boxes 12, be used for the electrical wiring of tested servomotor 2, load motor 3 and pressure transducer 6.
Referring to Fig. 2, the rotor of tested servomotor 2 links to each other by positive coupling 13 with the rotor of load motor 3, one side of counter flange 5 is fixedlyed connected with load motor 3 stators, the opposite side of counter flange 5 is provided with slideway 14, in slideway 14, be provided with three bearings 15, the inner ring of bearing 15 is fixedlyed connected with flange 4, and counter flange 5 can be that freely rotate at the center around the outer ring of bearing 15 and with the rotor axis; Periphery one side at counter flange 5 also is provided with connecting rod 16, and the free end of connecting rod 16 is aimed at the pressure detection face of pressure transducer 6.
Load motor 3 adopts servomotor, to satisfy the needs of tested servomotor 2 rotating speed detection on a large scale.
The inner ring of bearing 15 is fixed on the side of the flange 4 that is used to connect load motor 3, and a side of counter flange 5 does not have a side of slideway 14 to fixedly connected with counter flange 5, and the slideway 14 of counter flange 5 is enclosed within on the outer ring of three bearings 15; Tested servomotor 2 is fixed on another flange 4, rotate regulating wheel 10, the spacing distance of adjusting two flanges 4 makes the shaft coupling 13 can the rotor of tested servomotor 2 is rigidly connected with the rotor of load motor 3, and the spacing distance that continues to adjust two flanges 4 neither rocks counter flange 5 and can be neatly around bearing 15 rotations; After finishing, adjustment two flanges 4 are fixed on the little opening pickup groove 11 of test board 1 lip-deep T shape with bolt; Various power leads, control line are linked to each other with tested servomotor 2, load motor 3, pressure transducer 6 and energized by terminal box 12; Tested servomotor 2 adopts speed control to make its stable being rotated on the given velocity amplitude, the rotor rotation of the rotor banding dynamic load motor 3 of tested servomotor 2, the stator at load motor 3 by electromagnetic force makes the free end of connecting rod 16 press to the pressure detection face of pressure transducer 6 at the generation reactive torque, then changes the sense of rotation of tested servomotor 2 as reverse rotation; The force value of detected pressures sensor 6; Change the stator current size of load motor 3, promptly changed the size of load force, tested servomotor 2 is subjected to it to influence rotating speed to change, because tested servomotor 2 is a speed control, tested servomotor 2 increases the output torque of rotor, makes the rotating speed of tested servomotor 2 come back to set-point; Because acting force equates with reacting force, experienced on the stator of load motor 3 and the identical change process of tested servomotor 2 output torques, because the stator of load motor 3 flexibly connects, the stator torque of load motor 3 changes fixed pressure into by connecting rod 16, the change procedure of detected pressures on pressure transducer 6 just can accurately detect the output torque whole variation process of tested servomotor 2.
Above embodiment is one of preferred plan of the present utility model, is not that the utility model is done any pro forma restriction, also has other variant and remodeling under the prerequisite that does not exceed the technical scheme that claim puts down in writing.
Claims (7)
1. servomotor test board, comprise test board and be installed in load motor on the test board, the rotor of described load motor links to each other with the rotor of tested servomotor, the stator of described tested servomotor is fixedlyed connected with described test board, it is characterized in that: the stator of described load motor and described test board flexibly connect, and described test board also is provided with the pressure transducer of the turning moment that detects described load motor stator.
2. a kind of servomotor test board according to claim 1, it is characterized in that: the stator of described load motor flexibly connects by coupling arrangement and described test board, described coupling arrangement comprises: flange, at least two bearings, counter flange, described flange is fixedlyed connected with described test board, described bearing is fixedlyed connected with described flange, one side of described counter flange is provided with slideway, described counter flange flexibly connects by described slideway and described bearing, and the stator of described load motor is fixedlyed connected with described counter flange.
3. a kind of servomotor test board according to claim 2 is characterized in that: described bearing is three.
4. according to claim 2 or 3 described a kind of servomotor test boards, it is characterized in that: the stator of described tested servomotor links to each other with described test board by flange, described test board upper surface is provided with the little opening pickup groove of crisscross T shape, and the flange that described and tested servo motor stator links to each other and the described flange that links to each other with bearing are by being bolted on the described pickup groove.
5. a kind of servomotor test board according to claim 4, it is characterized in that: described test board also is provided with regulating device, described regulating device comprises screw mandrel, screw, guide rod, fixed head, regulating wheel, described fixed head is fixedlyed connected with described test board, one end of described guide rod is fixedlyed connected with described fixed head, described fixing is slidingly connected by the flange of the flange of measured motor and described dead load motor and described guide rod, one end of described screw is fixedlyed connected with described fixed head, the other end of described screw is fixedlyed connected by the flange of measured motor with described fixing, one end of described screw mandrel is fixedlyed connected with described regulating wheel and is meshed with described screw, and the other end of described screw mandrel is fixedlyed connected with the flange of described dead load motor.
6. a kind of servomotor test board according to claim 4, it is characterized in that: the stator of described load motor is provided with connecting rod, one end of described connecting rod is fixedlyed connected with the stator of described load motor, and the other end of described connecting rod is corresponding with the pressure test face of described pressure transducer.
7. according to claim 1 or 2 or 3 described a kind of servomotor test boards, it is characterized in that: the stator of described load motor is provided with connecting rod, one end of described connecting rod is fixedlyed connected with the stator of described load motor, and the other end of described connecting rod is corresponding with the pressure test face of described pressure transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206722456U CN201964983U (en) | 2010-12-21 | 2010-12-21 | Servo motor test bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206722456U CN201964983U (en) | 2010-12-21 | 2010-12-21 | Servo motor test bench |
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| Publication Number | Publication Date |
|---|---|
| CN201964983U true CN201964983U (en) | 2011-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206722456U Expired - Lifetime CN201964983U (en) | 2010-12-21 | 2010-12-21 | Servo motor test bench |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102109399A (en) * | 2010-12-21 | 2011-06-29 | 宁波菲仕电机技术有限公司 | Servo motor test bench and test method |
| CN102914407A (en) * | 2012-11-13 | 2013-02-06 | 上海新时达电气股份有限公司 | Rotary inertia device and power supply wiring structure of rotary work motor |
| CN110702282A (en) * | 2019-10-28 | 2020-01-17 | 上海宝协新能源科技有限公司 | Servo motor test bench and test method |
| CN114739548A (en) * | 2022-03-30 | 2022-07-12 | 广东科伺智能科技有限公司 | Servo test system |
-
2010
- 2010-12-21 CN CN2010206722456U patent/CN201964983U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102109399A (en) * | 2010-12-21 | 2011-06-29 | 宁波菲仕电机技术有限公司 | Servo motor test bench and test method |
| CN102109399B (en) * | 2010-12-21 | 2012-07-25 | 宁波菲仕电机技术有限公司 | Servo motor test bench and test method |
| CN102914407A (en) * | 2012-11-13 | 2013-02-06 | 上海新时达电气股份有限公司 | Rotary inertia device and power supply wiring structure of rotary work motor |
| CN102914407B (en) * | 2012-11-13 | 2015-04-15 | 上海新时达电气股份有限公司 | Rotary inertia device and power supply wiring structure of rotary work motor |
| CN110702282A (en) * | 2019-10-28 | 2020-01-17 | 上海宝协新能源科技有限公司 | Servo motor test bench and test method |
| CN114739548A (en) * | 2022-03-30 | 2022-07-12 | 广东科伺智能科技有限公司 | Servo test system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110907 Effective date of abandoning: 20120725 |