CN212133955U - Permanent magnet synchronous motor tooth space torque testing device - Google Patents
Permanent magnet synchronous motor tooth space torque testing device Download PDFInfo
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- CN212133955U CN212133955U CN202021293718.1U CN202021293718U CN212133955U CN 212133955 U CN212133955 U CN 212133955U CN 202021293718 U CN202021293718 U CN 202021293718U CN 212133955 U CN212133955 U CN 212133955U
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Abstract
The utility model discloses a testing arrangement of PMSM tooth's socket torque, include: the device comprises a driving device for driving a motor to do uniform linear motion, a belt wheel for being sleeved with an output shaft of the motor to drive the output shaft to rotate, a rope wound on the belt wheel, a counterweight for applying a rotating force to the belt wheel, and a force measuring device for detecting and recording the pulling force of the rope when the belt wheel rotates, wherein the counterweight is vertically suspended at one end of the rope, the force measuring device is arranged at the other end of the rope, and the rope between the force measuring device and the belt wheel is kept horizontal. Through using the utility model provides a testing arrangement of PMSM tooth's socket torque can effectively improve motor tooth's socket torque test accuracy and efficiency of software testing, and this device simple structure, convenient to use can use widely.
Description
Technical Field
The utility model relates to the technical field of motors, more specifically say, relate to a PMSM tooth's socket torque's testing arrangement.
Background
In the prior art, the cogging torque is the torque generated by interaction between the permanent magnet and the stator core when the permanent magnet motor winding is not electrified, and the cogging torque can cause the motor torque to fluctuate, so that vibration and noise are generated, the rotating speed of the motor fluctuates, the motor cannot run stably, and finally the performance of the motor can be influenced. Therefore, before a plurality of motors are put into use, a motor cogging torque test is required to verify whether the motor products meet the design requirements.
At present, when the cogging torque of the motor is tested, mostly the cogging torque is tested by manually pulling the tension meter, so that the requirement on manual operation is very high, the influence of an operation method of manual operation on the test precision is very large, the cogging torque of the motor is complicated in test process and the accuracy of a test result is low finally.
In summary, how to provide a device capable of improving the accuracy of the motor cogging torque test is an urgent problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a PMSM tooth's socket torque's testing arrangement, it can effectively improve motor tooth's socket torque test accuracy and efficiency of software testing, and this device simple structure, convenient to use can use widely.
In order to achieve the above object, the present invention provides the following technical solutions:
a device for testing cogging torque of a permanent magnet synchronous motor comprises: the device comprises a driving device for driving a motor to do uniform linear motion, a belt wheel for driving an output shaft of the motor to rotate in a sleeved mode, a rope wound on the belt wheel, a counterweight for applying a rotating force to the belt wheel, and a force measuring device for detecting and recording the tension of the rope when the belt wheel rotates, wherein the counterweight is vertically suspended at one end of the rope, and the force measuring device is arranged at the other end of the rope and between the force measuring device and the belt wheel and keeps horizontal.
Preferably, the driving device comprises a fixing device for fixing the motor and a linear module for driving the fixing device to move linearly at a constant speed, the linear module comprises a track and a sliding block capable of moving reciprocally along the track, and the fixing device is arranged on the sliding block.
Preferably, the fixing device is provided with a groove used for being clamped with the bottom of the motor and an arc-shaped groove used for being clamped with the boss on the side part of the motor.
Preferably, the linear module comprises a power part for driving the sliding block to reciprocate, and the power part is a screw rod or a synchronous belt.
Preferably, the pulley is a T-shaped pulley, an annular groove for winding the rope is provided on an outer peripheral portion of the T-shaped pulley, and a screw hole for fastening the output shaft is provided at an end portion of the T-shaped pulley.
Preferably, a bushing is interposed between the inner peripheral portion of the pulley and the outer peripheral portion of the output shaft, and the bushing is provided with a notch.
Preferably, the counterweight is a counterweight-shaped counterweight block, and a fixing groove for fixing the rope is arranged at the top of the counterweight block.
Preferably, the force measuring device is connected with a control device to transmit tension data to the control device, and the control device is used for processing the tension data to obtain cogging torque data of the motor.
Use the utility model provides a during testing arrangement of PMSM tooth's socket torque, at first, place the motor on drive arrangement to cup joint the band pulley on motor output shaft, set up rope winding band pulley again, finally ensure rope level between measuring force device and the band pulley, and the counterweight hangs perpendicularly. When the driving device is not started, the motor keeps static, the rope tension detected by the force measuring device is the gravity of the counterweight, and under the condition, an operator can perform zero clearing operation on the force measuring device to eliminate the influence of the counterweight on a subsequent test result. Then, the operator can control the driving device to operate, so that the driving device drives the motor to move at a constant speed along the linear direction, for example, the motor can be controlled to move along the direction far away from the force measuring device, the length of the rope between the force measuring device and the belt wheel is increased, the length of the rope between the counterweight block and the belt wheel is reduced, the counterweight block is made to ascend, the belt wheel rotates due to the gravity traction of the counterweight piece, meanwhile, the belt wheel can drive the output shaft of the motor to rotate at a constant speed, at the moment, a fluctuating force is generated on the rope due to the existence of the tooth space torque of the motor, the force measuring device can detect and record the fluctuating tension in real time, and finally, the operator converts the recorded tension data again, and the tooth.
In addition, when the device is used for testing the cogging torque of the motor, a force measuring device does not need to be manually pulled, constant pulling force is applied to the belt wheel through the weight piece, and the driving device is matched with the driving device to drive the motor to move at a constant speed, so that the test condition of the uniform speed rotation of the motor output shaft is effectively provided, the accuracy of the test result of the cogging torque of the motor is favorably improved, the device is simple and convenient to operate, and the efficiency of testing the cogging torque of the motor is favorably improved.
To sum up, the utility model provides a testing arrangement of PMSM tooth's socket torque can effectively improve motor tooth's socket torque test accuracy and efficiency of software testing, and this device simple structure, convenient to use can use widely.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a testing apparatus for cogging torque of a permanent magnet synchronous motor according to the present invention;
FIG. 2 is a schematic structural view of a pulley;
FIG. 3 is a schematic structural view of the bushing;
FIG. 4 is a schematic view of the counterweight;
fig. 5 is a schematic structural view of the fixing device.
In fig. 1-5:
the device comprises a motor 1, a belt wheel 2, an annular groove 21, an annular protrusion 22, a threaded hole 23, a rope 3, a counterweight 4, a force measuring device 5, a fixing device 6, a groove 61, an arc-shaped groove 62, a linear module 7, a rail 71, a sliding block 72, a shaft sleeve 8, a notch 81, a bottom plate 9 and an output shaft 10.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The core of the utility model is to provide a testing arrangement of PMSM tooth's socket torque can effectively improve motor tooth's socket torque test accuracy and efficiency of software testing, and this device simple structure, convenient to use can use widely.
Referring to fig. 1 to 5, fig. 1 is a schematic structural diagram of a testing apparatus for cogging torque of a permanent magnet synchronous motor according to the present invention; FIG. 2 is a schematic structural view of a pulley; FIG. 3 is a schematic structural view of the bushing; FIG. 4 is a schematic view of the counterweight; fig. 5 is a schematic structural view of the fixing device.
This embodiment provides a permanent magnet synchronous motor cogging torque's testing arrangement, includes: the device comprises a driving device for driving a motor 1 to do uniform linear motion, a belt wheel 2 which is sleeved with an output shaft 10 of the motor 1 to drive the output shaft 10 to rotate, a rope 3 which is wound on the belt wheel 2, a counterweight 4 which is used for applying a rotating force to the belt wheel 2, and a force measuring device 5 which is used for detecting and recording the tension of the rope 3 when the belt wheel 2 rotates, wherein the counterweight 4 is vertically suspended at one end of the rope 3, the force measuring device 5 is arranged at the other end of the rope 3, and the rope 3 between the force measuring device 5 and the belt wheel 2 is kept horizontal.
The rope 3 is a test rope of the force measuring device 5 for measuring force, the installation height of the force measuring device 5 can be set to be the same as that of the belt pulley 2, so that the test rope of the force measuring device 5 is horizontally pulled out and then tangent to the top of the belt pulley 2, then the test rope is wound along the periphery of the belt pulley 2, and finally the other end of the test rope is connected with the counterweight 4, so that the counterweight 4 is vertically suspended.
Preferably, the force measuring device 5 and the driving device can be both mounted on the base plate 9, and the driving device can drive the motor 1 to move along the base plate 9.
It should also be mentioned that the drive means here can be a reciprocating assembly, i.e. the drive means can be such that the motor 1 is remote from the force measuring device 5 or close to the force measuring device 5. For example, when the driving device drives the motor 1 to move away from the force measuring device 5, the weight member 4 will be lifted due to the fixed length of the test rope, and the process will apply a rotational force to the belt pulley 2, so that the belt pulley 2 drives the output shaft 10 to rotate, and at the same time, the force measuring device 5 can measure the fluctuating tensile force applied to the test rope. The real-time cogging torque of the motor 1 can be obtained by detecting and recording the fluctuating tension and carrying out related processing on the tension data. When the driving device drives the motor 1 to be close to the force measuring device 5, the counterweight 4 descends, the belt wheel 2 can be driven to rotate in the process, the belt wheel 2 can synchronously drive the output shaft 10 to rotate, the test result of the process is the same as that of the previous process, so that the process is not recorded, and the process is only taken as the reset operation of the motor 1 and the driving device, so that the cogging torque test of the next motor 1 is facilitated. The device has low cost, convenient operation, less influence on the test result and high test precision.
In the actual application process, the shapes, structures, sizes, materials and the like of the driving device, the belt wheel 2, the counterweight 4 and the force measuring device 5 can be determined according to actual conditions and actual requirements.
Use the utility model provides a during testing arrangement of PMSM tooth's socket torque, at first, place motor 1 on drive arrangement to cup joint band pulley 2 on motor 1's output shaft 10, again with 3 winding band pulleys of rope 2 settings, finally ensure 3 levels of rope between measuring force device 5 and the band pulley 2, and counterweight 4 hangs perpendicularly. When the driving device is not started, the motor 1 keeps static, the tension of the rope 3 detected by the force measuring device 5 is the gravity of the counterweight 4, and under the condition, an operator can clear the force measuring device 5 to eliminate the influence of the counterweight 4 on a subsequent test result. Then, an operator can control the driving device to operate, so that the driving device drives the motor 1 to move at a constant speed along a linear direction, for example, the motor 1 can be controlled to move along a direction far away from the force measuring device 5, because the length of the rope 3 between the force measuring device 5 and the belt pulley 2 is increased, the length of the rope 3 between the counterweight block and the belt pulley 2 is reduced, so that the counterweight block rises, the belt pulley 2 rotates due to the gravity traction of the counterweight 4, meanwhile, the belt pulley 2 can drive the output shaft 10 of the motor 1 to rotate at a constant speed, at this moment, because the motor 1 has a cogging torque, a fluctuating force is generated on the rope 3, the force measuring device 5 can detect and record the fluctuating pulling force in real time, and finally, the operator converts the recorded pulling force data to obtain the cogging torque data of the motor 1.
In addition, when using this device to carry out the tooth's socket torque test to motor 1, need not artifical manual pulling measuring force device 5, exert invariable pulling force to band pulley 2 through counterweight 4 to cooperate drive arrangement driving motor 1 uniform motion, effectively provide the at uniform velocity pivoted test condition of the output shaft 10 of motor 1 like this, be favorable to improving the accuracy of 1 tooth's socket torque test result of motor, and this device easy operation is convenient, be favorable to improving motor 1 and carry out tooth's socket torque efficiency of software testing.
To sum up, the utility model provides a testing arrangement of PMSM tooth's socket torque can effectively improve 1 tooth's socket torque test accuracy of motor and efficiency of software testing, and this device simple structure, convenient to use can use widely.
On the basis of the above embodiment, preferably, the driving device includes a fixing device 6 for fixing the motor 1 and a linear module 7 for driving the fixing device 6 to move linearly at a constant speed, the linear module 7 includes a track 71 and a slider 72 capable of moving reciprocally along the track 71, and the fixing device 6 is disposed on the slider 72.
It should be noted that, after the motor 1 is installed on the fixing device 6, when the linear module 7 starts to operate, the sliding block 72 of the linear module 7 can slide along the rail 71, so as to synchronously drive the fixing device 6 and the motor 1 to synchronously slide, thereby ensuring that the motor 1 performs a uniform linear motion, and further enabling the counterweight 4 to drive the pulley 2 to rotate at a uniform speed.
In the actual application process, the shapes, structures, sizes, positions, materials and the like of the fixing device 6, the linear module 7, the rail 71 and the slider 72 can be determined according to actual conditions and actual requirements.
Preferably, the fixing device 6 is provided with a groove 61 for clamping with the bottom of the motor 1 and an arc-shaped groove 62 for clamping with a boss at the side part of the motor 1.
It should be noted that the bottom of the fixing device 6 is connected with the sliding block 72, so that the sliding block 72 can synchronously drive the fixing device 6 and the motor 1 to slide, the top of the fixing device 6 can be provided with the groove 61 and the arc-shaped groove 62, so that after the motor 1 is directly placed into the fixing device 6 by an operator to be clamped, the motor 1 can be fixed, the motor 1 is very simple and convenient to position and operate, and meanwhile, the motor 1 can be conveniently taken out subsequently. And, recess 61 can effectively guarantee the stability of motor 1 bottom, avoids motor 1 to fluctuate from top to bottom, and the boss of motor 1 lateral part can effectively be fixed to arc wall 62, avoids motor 1 to take place to rock about, so fixing device 6 can effectively ensure motor 1's installation stability.
The shape, structure, size, position, etc. of the groove 61 and the arc-shaped groove 62 can be determined in the actual application process according to the actual situation and the actual requirement.
Preferably, the linear module 7 includes a power component for driving the sliding block 72 to reciprocate, the power component is a lead screw or a synchronous belt, the sliding block 72 can reciprocate along the track 71 by controlling the power component to move, so that the fixing device 6 and the motor 1 on the fixing device 6 synchronously reciprocate, and the reciprocating motion can be set to be a uniform motion, so that the output shaft 10 of the motor 1 rotates at a uniform speed. Besides the power member can be a lead screw, a synchronous belt or other devices, and the power member can also be other devices capable of driving the sliding block 72 to reciprocate at a constant speed according to actual conditions and actual requirements.
In addition to the above embodiment, it is preferable that the pulley 2 is a T-shaped pulley 2, an annular groove 21 for winding the rope 3 is provided on an outer peripheral portion of the T-shaped pulley 2, and a screw hole 23 for fastening the output shaft 10 is provided at an end portion thereof.
In this embodiment, the pulley 2 is configured as the T-shaped pulley 2 because the annular groove 21 is formed in the outer circumferential portion of the T-shaped pulley 2, which facilitates the rope 3 to be wound around the outer circumferential portion of the pulley 2, and facilitates the driving of the pulley 2 in the subsequent testing process. Since the annular projection 22 is provided at the end of the T-shaped pulley 2 and the threaded holes 23 are uniformly provided in the annular projection 22 in the circumferential direction, when the T-shaped pulley 2 is fitted around the outer circumferential portion of the output shaft 10, the output shaft 10 can be inserted through the annular projection 22, and screws are inserted into the threaded holes 23 of the annular projection 22, whereby the fastening effect of fastening the T-shaped pulley 2 and the output shaft 10 can be effectively achieved, and the synchronous rotation of the two can be ensured.
Preferably, a bushing 8 is interposed between an inner peripheral portion of the pulley 2 and an outer peripheral portion of the output shaft 10, and the bushing 8 is provided with a notch 81.
The reason why the sleeve 8 is interposed between the inner circumferential portion of the pulley 2 and the outer circumferential portion of the output shaft 10 is to effectively increase the service life of the output shaft 10 of the pulley 2 by providing the sleeve 8 in order to avoid abrasion in the rotation process of the pulley 2 and the output shaft 10. The reason why the notch 81 is formed in the sleeve 8 is that when a screw is inserted into the threaded hole 23 of the annular protrusion 22, the screw abuts against the outer peripheral portion of the sleeve 8, so that the notch 81 is formed in the sleeve 8, and the pressing force of the screw can be received by utilizing the contraction characteristic of the notch 81, that is, when the screw presses the sleeve 8, the notch 81 can be contracted, so that the sleeve 8 presses the output shaft 10, and the fastening effect between the sleeve 8 and the output shaft 10 is ensured. When the screw is pulled out and no longer presses the sleeve 8, the notch 81 is restored to be enlarged, so that the sleeve 8 loosens the output shaft 10 to facilitate the removal of the output shaft 10.
The shape, structure, size, etc. of the shaft sleeve 8 and the notch 81 can be determined in the actual application process according to the actual situation and the actual requirement.
Preferably, the counterweight 4 is a counterweight-shaped counterweight, and a fixing groove for fixing the rope 3 is arranged at the top of the counterweight. Therefore, the rope 3 can be horizontally pulled out from the force measuring device 5, then the rope 3 is tangent to the belt wheel 2 and winds two circles along the periphery of the belt wheel 2, then the rope 3 is tangent to the belt wheel 2 and keeps a vertical downward state, and finally the rope 3 is fastened through a fixing groove at the top of the counterweight block, so that the rope 3 between the force measuring device 5 and the belt wheel 2 is horizontally hung and the counterweight block is vertically hung. The counterweight 4 is set to be a counterweight-shaped counterweight block, so that the gravity center of the counterweight block can be better kept stable, and the counterweight block can only move up and down.
Can be in the in-service use in-process, according to actual conditions and actual demand, confirm shape, structure, size etc. of balancing weight and fixed slot.
Preferably, the force measuring device 5 is connected to a control device for transmitting tension data to the control device, and the control device is configured to process the tension data to obtain cogging torque data of the motor 1.
It should be noted that, in the rotation process of the belt pulley 2 and the output shaft 10, the force measuring device 5 can detect and record the fluctuating tension data of the rope 3 in real time, and transmit the tension data to the control device in real time, and then the control device can convert the collected tension data to obtain the cogging torque data of the motor 1, and the control device can also synchronously draw the data waveform in the whole process. Because the rope 3 between the force measuring device 5 and the belt wheel 2 is kept horizontal, and the balancing weight is vertically hung at the other end of the rope 3 wound around the belt wheel 2, the force measuring device 5 is tangent to the belt wheel 2, and the balancing weight is also tangent to the belt wheel 2.
The specific calculation method of the control device comprises the following steps: assuming that the radius of the pulley 2 is r and the tension of the rope 3 detected by the force measuring device 5 at a certain point during the rotational movement of the pulley 2 is F, the cogging torque of the motor 1 at that point is T ═ F · r. According to the collected tension data, the maximum force value F of the motor 1 in the uniform linear motion process of the motor 1 can be obtainedmaxAnd a minimum force value FminSo as to calculate the maximum value T of the torque of the tooth groovemax＝FmaxR, minimum value of cogging torque Tmin＝FminR, and the cogging torque peak T can be obtainedp-p＝(Fmax-Fmin) R, the control device can convert the tension data according to the above calculation principle to obtain the cogging torque data of the motor 1, and can synchronously draw the data waveform of the cogging torque in the whole process, so that an operator can visually judge the cogging torque of the motor 1The situation is.
For better illustration, the present invention provides a testing device for cogging torque of a pmsm, which is used in the following description.
When utilizing this device to carry out 1 tooth's socket torque test of motor, at first, fix motor 1 on fixing device 6, and make fixing device 6 be connected with the slider 72 of sharp module 7, then, can inlay at 2 holes of band pulley and be equipped with axle sleeve 8, again with band pulley 2 and axle sleeve 8 installation fixed at the output shaft 10 periphery of motor 1, later, connect 3 one end of rope on measuring force device 5, the winding is in 2 periphery parts of band pulley in the middle of the rope 3, the 3 other ends of rope are connected with the balancing weight, in order to ensure that 3 level of rope between measuring force device 5 and the band pulley 2, and the balancing weight hangs perpendicularly. Subsequently, in order to eliminate the influence of the weight of the balancing weight on the test result, when a different balancing weight is used for the first time, the force measuring device 5 needs to be zeroed to ensure the accuracy of the subsequent test result.
Afterwards, can control the operation of straight line module 7, carry out uniform velocity linear motion with drive fixing device 6 and motor 1, because of receiving the traction of balancing weight gravity in the motion process, band pulley 2 can drive the output shaft 10 of motor 1 at the uniform velocity rotatory, can produce a undulant pulling force on the rope 3 this moment, rotatory in-process measuring device 5 can real-time detection and record this undulant power, and transmit pulling force data to controlling means in real time, controlling means can handle the conversion to the pulling force data who gathers, finally obtain the tooth's socket torque data of motor 1, and controlling means can also draw out whole process's tooth ' socket torque data waveform in step, so that operating personnel carries out visual judgement to the test result of motor 1. The utility model provides a testing arrangement of PMSM tooth's socket torque has that the installation of motor 1 is simple, change motor 1 is convenient, use operating procedure is simple, advantages such as 1 test result precision of motor is high, test operation efficiency height can use widely.
In addition, it should be noted that the directions or positional relationships indicated by "horizontal", "bottom", "top", etc. in the present application are based on the directions or positional relationships shown in the drawings only for the convenience of simplifying the description and facilitating the understanding, and do not indicate or imply that the indicated device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The utility model provides an arbitrary compound mode of all embodiments all is in this utility model's a protection scope, does not do here and gives unnecessary details.
It is right above the utility model provides a PMSM tooth's socket torque's testing arrangement has carried out the detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (8)
1. The utility model provides a testing arrangement of PMSM tooth's socket torque which characterized in that includes: a measuring force device (5) is located the rope (3) of rope (3) when band pulley (2) rotates, weight (4) hang perpendicularly in rope (3) one end, measuring force device (5) are located the rope (3) other end, just measuring force device (5) with between band pulley (2) rope (3) keep the level.
2. The testing device for the cogging torque of the permanent magnet synchronous motor according to claim 1, wherein the driving device comprises a fixing device (6) for fixing the motor (1) and a linear module (7) for driving the fixing device (6) to linearly move at a constant speed, the linear module (7) comprises a track (71) and a sliding block (72) capable of reciprocally moving along the track (71), and the fixing device (6) is arranged on the sliding block (72).
3. The testing device for the cogging torque of the permanent magnet synchronous motor according to claim 2, wherein the fixing device (6) is provided with a groove (61) used for being clamped with the bottom of the motor (1) and an arc-shaped groove (62) used for being clamped with a boss at the side of the motor (1).
4. The testing device for the cogging torque of the permanent magnet synchronous motor according to claim 2, wherein the linear module (7) comprises a power member for driving the sliding block (72) to reciprocate, and the power member is a screw rod or a synchronous belt.
5. The testing device for the cogging torque of the permanent magnet synchronous motor according to any one of claims 1 to 4, wherein the pulley (2) is a T-shaped pulley (2), an annular groove (21) for winding the rope (3) is formed in the outer periphery of the T-shaped pulley (2), and a threaded hole (23) for fastening the output shaft (10) is formed in the end portion of the T-shaped pulley.
6. The testing device of the cogging torque of the permanent magnet synchronous motor according to claim 5, wherein a bushing (8) is interposed between the inner circumferential portion of the pulley (2) and the outer circumferential portion of the output shaft (10), and the bushing (8) is provided with a notch (81).
7. The testing device for the cogging torque of the permanent magnet synchronous motor according to any one of claims 1 to 4, wherein the counterweight (4) is a counterweight-shaped counterweight, and a fixing groove for fixing the rope (3) is formed at the top of the counterweight.
8. Device for testing the cogging torque of a permanent-magnet synchronous motor according to any of claims 1 to 4, characterized in that the force measuring device (5) is connected to a control device for transmitting tension data to the control device, and the control device is configured to process the tension data to obtain the cogging torque data of the motor (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021293718.1U CN212133955U (en) | 2020-07-03 | 2020-07-03 | Permanent magnet synchronous motor tooth space torque testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021293718.1U CN212133955U (en) | 2020-07-03 | 2020-07-03 | Permanent magnet synchronous motor tooth space torque testing device |
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| CN212133955U true CN212133955U (en) | 2020-12-11 |
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| CN202021293718.1U Active CN212133955U (en) | 2020-07-03 | 2020-07-03 | Permanent magnet synchronous motor tooth space torque testing device |
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