CN114486026A - Permanent magnet synchronous motor positioning torque testing device and torque output control method thereof - Google Patents
Permanent magnet synchronous motor positioning torque testing device and torque output control method thereof Download PDFInfo
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- CN114486026A CN114486026A CN202111647931.7A CN202111647931A CN114486026A CN 114486026 A CN114486026 A CN 114486026A CN 202111647931 A CN202111647931 A CN 202111647931A CN 114486026 A CN114486026 A CN 114486026A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/02—Rotary-transmission dynamometers
- G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
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Abstract
The invention relates to the technical field of motor testing, in particular to a positioning torque testing device of a permanent magnet synchronous motor and a torque output control method thereof; including the workstation, the straight line module, the digital display chest expander, the pulling force rope, adjustable mount pad and quilt survey motor, the mounting includes the sleeve, flexible gasbag and fixture block, at first tie up pulling force rope one end tightly on the second link, evenly wind the pulling force rope on the helicla flute, when testing the motor of difference, establish the outside at motor output shaft with the sleeve cover, make fixture block and draw-in groove corresponding back, utilize the valve inside to aerify to the inside of flexible gasbag, make flexible gasbag aerify the inflation back, go into the fixture block card to the draw-in groove in, thereby fix the sleeve on corresponding quilt survey motor, adopt above-mentioned structure, the installation of completion pulling force rope that can be faster, and the efficiency of software testing is improved.
Description
Technical Field
The invention relates to the technical field of motor testing, in particular to a positioning torque testing device of a permanent magnet synchronous motor and a torque output control method thereof.
Background
For a permanent magnet motor, when a motor winding is not electrified and the winding is open-circuited, a rotor of the motor is slightly rotated by hands, a certain action torque is sensed on the rotor, the torque is uneven in size in a circle range, a plurality of positioning points can be found, the rotor is positioned at the points in a natural state, and the position of the rotor can be changed only under the action of a certain external torque. Excessive positioning torque not only hinders improvement of motor efficiency and control accuracy, but also often causes vibration and noise.
Common PMSM location torque testing arrangement tests through sharp module and digital display chest expander greatly, but current PMSM location torque testing arrangement when testing different PMSM, all needs the manual work evenly to twine the pulling force rope on being surveyed the output shaft of motor, reduces efficiency of software testing.
Disclosure of Invention
The invention aims to provide a positioning torque testing device of a permanent magnet synchronous motor and a torque output control method thereof, and solves the problem that when the existing positioning torque testing device of the permanent magnet synchronous motor in the prior art is used for testing different permanent magnet synchronous motors, a tension rope needs to be uniformly wound on an output shaft of a tested motor manually, and the testing efficiency is reduced.
In order to achieve the purpose, the invention provides a positioning torque testing device of a permanent magnet synchronous motor, which comprises a workbench, a linear module, a digital display chest expander, a tension rope, an adjustable mounting seat and a tested motor, wherein the linear module is arranged at one end of the workbench, the adjustable mounting seat is arranged at the other end of the workbench, a sliding plate is arranged at the output end of the linear module, the digital display chest expander is detachably connected with the sliding plate, a drag hook is arranged at one end of the digital display chest expander close to the adjustable mounting seat, the tested motor is arranged above the adjustable mounting seat, a motor output shaft is arranged at the output end of the tested motor, the height of the motor output shaft is consistent with that of the drag hook, a first hanging ring is arranged at one end of the tension rope, and a fixing part is arranged at the other end of the tension rope, the first hanging ring is matched with the draw hook, and the fixing piece is matched with the output shaft of the motor;
the fixing piece comprises a sleeve, a telescopic air bag and a clamping block, a clamping groove is formed in the motor output shaft, the sleeve is sleeved outside the motor output shaft, the telescopic air bag is arranged on the inner side wall of the sleeve, the clamping block is arranged on the inner side wall of the telescopic air bag, the clamping block is connected with the clamping groove in a clamped mode, an air inlet hole is formed in the outer side wall of the sleeve and is located at one end of the sleeve, a valve core is arranged on the air inlet hole, a spiral groove is further formed in the outer side wall of the sleeve, and a second hanging ring is arranged at one end of the spiral groove.
Firstly, one end of the tension rope is tightly tied on the second hanging ring, then the tension rope is uniformly wound on the spiral groove, when different motors are tested, the sleeve is sleeved outside the motor output shaft, so that the clamping block corresponds to the clamping groove, the valve core is utilized to inflate inside the telescopic air bag, the telescopic air bag is inflated and expanded, the clamping block is clamped into the clamping groove, and therefore the sleeve is fixed on the tested motor correspondingly.
The telescopic airbag comprises an airbag body and a skeleton, wherein the outer side wall of the airbag body is bonded with the inner side wall of the sleeve, air holes are formed in the airbag body and correspond to the air inlet holes, the fixture blocks are arranged on the inner side wall of the airbag body, the skeleton is arranged in the airbag body and comprises a plurality of telescopic rods, and the telescopic rods are uniformly distributed in the airbag body.
The inside of utricule is provided with the skeleton makes when the utricule is aerifyd, towards the flexible direction of telescopic link is aerifyd, is difficult for taking place deformation, is convenient for with the fixture block card is gone into extremely in the draw-in groove.
Wherein, every the telescopic link all includes outer post, inner prop and spring, the outer post with the inner prop all bonds in the inside of utricule, the outer post is located the utricule is close to telescopic one end, the inner prop is located the utricule is close to the one end of motor output shaft, be provided with the sliding tray on the outer post, the inside of sliding tray is provided with the spring, the inner prop is kept away from the one end of motor output shaft is provided with the limiting plate, the limiting plate is located the inside of sliding tray, the one end of spring with the bottom welding of sliding tray, the other end of spring with the limiting plate welding, the sliding tray with the limiting plate all is regular polygon structure setting.
Because the one end of spring with the bottom welding of sliding tray, the other end of spring with the limiting plate welding, when the utricule is aerifyd, the limiting plate is in keep away from in the sliding tray the slip of telescopic one end makes the spring is in tensile state, right when the utricule is deflated under the effect of restoring force of spring, the limiting plate is to being close to telescopic one end slides, thereby makes the fixture block breaks away from the draw-in groove, is convenient for with the sleeve is followed take out on the motor output shaft.
Each telescopic rod further comprises a clamping block, and the clamping block is sleeved outside the inner column and is connected with the end part of the sliding groove in a clamping mode.
After the limiting plate is arranged inside the sliding groove, the clamping block is clamped at the end part of the sliding groove, so that the situation that the limiting plate is separated from the sliding groove due to excessive inflation of the bag body is avoided.
The linear module comprises a slide rail, a first servo motor, a first lead screw and a first lead screw sleeve, the slide rail is detachably connected with the workbench and is located at one end, away from the adjustable mounting seat, of the workbench, the first lead screw is arranged at the output end of the first servo motor and is located inside the slide rail, the first lead screw is provided with the first lead screw sleeve, the first lead screw sleeve is detachably connected with the sliding plate, and the sliding plate is slidably connected with the slide rail.
And starting the first servo motor to drive the first screw rod to rotate, and driving the digital display chest expander to move on the slide rail at a constant speed as the sliding plate is connected with the dismounting part and slides on the slide rail.
The invention also provides a torque output control method applied to the permanent magnet synchronous motor positioning torque testing device, which comprises the following steps:
firstly, one end of the tension rope is tied on the second hanging ring, and then the tension rope is uniformly wound on the spiral groove;
when different motors are tested, the sleeve is sleeved outside the motor output shaft, so that the clamping block corresponds to the clamping groove, the valve core is used for inflating the inside of the telescopic air bag, the clamping block is clamped into the clamping groove after the telescopic air bag is inflated and expanded, and the sleeve is fixed on the corresponding tested motor;
then, the other end of the tension rope is hung on the drag hook by using the first hanging ring, and the tension rope is in a tight state at the moment;
and finally, starting the linear module to drive the digital display chest developer on the sliding plate to move at a constant speed, recording the reading on the digital display chest developer in real time, and calculating the positioning torque of the motor to be measured according to the following formula after the output shaft of the motor rotates for a circle: and T is (Fmax-Fmin) x r, wherein T is a positioning torque, Fmax is the maximum value displayed by the digital display chest expander, Fmin is the minimum value displayed by the digital display chest expander, and r is the radius of the motor output shaft of the motor to be measured.
Firstly, one end of the tension rope is tied on the second hanging ring, then the tension rope is uniformly wound on the spiral groove, when different motors are tested, the sleeve is sleeved outside the output shaft of the motor, after the clamping block corresponds to the clamping groove, the valve core is utilized to inflate the inside of the telescopic air bag, after the telescopic air bag is inflated and expanded, the clamping block is clamped into the clamping groove, so that the sleeve is fixed on the corresponding motor to be tested, then the other end of the tension rope is hung on the drag hook by utilizing the first hanging ring, at the moment, the tension rope is in a tight state, finally, the linear module is started, the digital display tension device on the sliding plate is driven to move at a constant speed, the reading on the digital display tension device is recorded in real time, after the output shaft of the motor rotates for one circle, calculating the positioning torque of the tested motor according to the following formula: and T is (Fmax-Fmin) x r, wherein T is a positioning torque, Fmax is the maximum value displayed by the digital display chest expander, Fmin is the minimum value displayed by the digital display chest expander, and r is the radius of the motor output shaft of the motor to be measured.
The invention relates to a permanent magnet synchronous motor positioning torque testing device and a torque output control method thereof, which comprises a workbench, a linear module, a digital display chest expander, a pull rope, an adjustable mounting seat and a tested motor, wherein a fixing piece comprises a sleeve, a telescopic air bag and a clamping block, one end of the pull rope is tied on a second hanging ring, then the pull rope is uniformly wound on a spiral groove, when different motors are tested, the sleeve is sleeved outside an output shaft of the motor, after the clamping block corresponds to a clamping groove, the valve core is used for inflating the inner part of the telescopic air bag, after the telescopic air bag is inflated and expanded, the clamping block is clamped into the clamping groove, so that the sleeve is fixed on the corresponding tested motor, compared with the traditional testing device, when different motors are tested, the tensile rope is required to be wound on the corresponding motor output shaft every time, and by adopting the structure, the installation of the tensile rope can be completed more quickly, and the testing efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a positioning torque testing device of a permanent magnet synchronous motor provided by the invention.
Fig. 2 is an enlarged view of a portion of the structure of fig. 1 a according to the present invention.
Fig. 3 is a schematic diagram of a disassembled structure of the fixing member and the motor to be tested provided by the invention.
Figure 4 is a side view of a fastener provided by the present invention.
Fig. 5 is a sectional view of the inner structure of fig. 4 taken along line B-B according to the present invention.
Fig. 6 is a sectional view showing the internal structure of the telescopic rod according to the present invention.
Fig. 7 is a schematic structural diagram of the lifting unit provided by the present invention.
Fig. 8 is a flowchart of steps of a torque output control method applied to the positioning torque testing device of the permanent magnet synchronous motor provided by the invention.
1-workbench, 2-linear module, 3-digital display chest expander, 4-tension rope, 5-adjustable mounting seat, 6-tested motor, 7-sliding plate, 8-drag hook, 9-motor output shaft, 10-first hanging ring, 11-fixing piece, 12-sleeve, 13-telescopic air bag, 14-clamping block, 15-clamping groove, 16-air inlet hole, 17-valve core, 18-spiral groove, 19-second hanging ring, 20-bag body, 21-framework, 22-air hole, 23-telescopic rod, 24-outer column, 25-inner column, 26-spring, 27-sliding groove, 28-limiting plate, 29-clamping block, 30-sliding rail, 31-first servo motor, 32-first screw rod, 33-a first screw rod sleeve, 34-a mounting frame, 35-a mounting plate, 36-a lifting unit, 37-a chute, 38-a first pushing mechanism, 39-a second pushing mechanism, 40-a scissor frame, 41-a first connecting rod, 42-a second connecting rod, 43-a second servo motor, 44-a second screw rod and 45-a second screw rod sleeve.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1 to 7, the invention provides a positioning torque testing device for a permanent magnet synchronous motor, which comprises a workbench 1, a linear module 2, a digital display chest expander 3, a tension rope 4, an adjustable mounting base 5 and a tested motor 6, wherein the linear module 2 is arranged at one end of the workbench 1, the adjustable mounting base 5 is arranged at the other end of the workbench 1, a sliding plate 7 is arranged at the output end of the linear module 2, the digital display chest expander 3 is detachably connected with the sliding plate 7, a draw hook 8 is arranged at one end of the digital display chest expander 3 close to the adjustable mounting base 5, the tested motor 6 is arranged above the adjustable mounting base 5, a motor output shaft 9 is arranged at the output end of the tested motor 6, and the height of the motor output shaft 9 is consistent with the height of the draw hook 8, a first hanging ring 10 is arranged at one end of the pull rope 4, a fixing part 11 is arranged at the other end of the pull rope 4, the first hanging ring 10 is matched with the draw hook 8, and the fixing part 11 is matched with the motor output shaft 9;
the fixing part 11 comprises a sleeve 12, a telescopic air bag 13 and a clamping block 14, a clamping groove 15 is formed in the motor output shaft 9, the sleeve 12 is sleeved outside the motor output shaft 9, the inner side wall of the sleeve 12 is provided with the telescopic air bag 13, the inner side wall of the telescopic air bag 13 is provided with the clamping block 14, the clamping block 14 is connected with the clamping groove 15 in a clamping mode, an air inlet hole 16 is formed in the outer side wall of the sleeve 12, the air inlet hole 16 is located at one end of the sleeve 12, a valve core 17 is arranged on the air inlet hole 16, a spiral groove 18 is further formed in the outer side wall of the sleeve 12, and a second hanging ring 19 is arranged at one end of the spiral groove 18.
In this embodiment, one end of the tensile cord 4 is tied tightly on the second hanging ring 19, then the tensile cord 4 is uniformly wound on the spiral groove 18, when different motors are tested, the sleeve 12 is sleeved outside the motor output shaft 9, so that the clamping block 14 corresponds to the clamping groove 15, the valve core 17 is utilized to inflate the inside of the telescopic airbag 13, so that the telescopic airbag 13 is inflated and expanded, and then the clamping block 14 is clamped into the clamping groove 15, so that the sleeve 12 is fixed on the corresponding tested motor 6, compared with the conventional testing device, when different motors are tested, the tensile cord 4 needs to be wound on the corresponding motor output shaft 9 each time, and by adopting the above structure, the installation of the tensile cord 4 can be completed more quickly, the testing efficiency is improved.
Further, the telescopic airbag 13 includes a bag body 20 and a skeleton 21, an outer side wall of the bag body 20 is bonded to an inner side wall of the sleeve 12, an air hole 22 is formed in the bag body 20, the air hole 22 corresponds to the air inlet 16, the fixture block 14 is arranged on the inner side wall of the bag body 20, the skeleton 21 is arranged inside the bag body 20, the skeleton 21 is formed by a plurality of telescopic rods 23, and the plurality of telescopic rods 23 are uniformly distributed inside the bag body 20.
In this embodiment, the skeleton 21 is disposed inside the capsule 20, so that when the capsule 20 is inflated, the air is inflated toward the telescopic direction of the telescopic rod 23, and thus the deformation is not likely to occur, and the fixture block 14 is conveniently clamped into the clamping groove 15.
Further, every telescopic link 23 all includes outer post 24, inner prop 25 and spring 26, outer post 24 with inner prop 25 all bonds in the inside of utricule 20, outer post 24 is located utricule 20 is close to the one end of sleeve 12, inner prop 25 is located utricule 20 is close to the one end of motor output shaft 9, be provided with sliding tray 27 on the outer post 24, the inside of sliding tray 27 is provided with spring 26, inner prop 25 is kept away from the one end of motor output shaft 9 is provided with limiting plate 28, limiting plate 28 is located the inside of sliding tray 27, the one end of spring 26 with the bottom welding of sliding tray 27, the other end of spring 26 with limiting plate 28 welds, sliding tray 27 with limiting plate 28 all is regular polygon structure and sets up.
In this embodiment, since one end of the spring 26 is welded to the bottom of the sliding groove 27, and the other end of the spring 26 is welded to the stopper plate 28, when the capsule 20 is inflated, the stopper plate 28 slides in the sliding groove 27 to the end away from the sleeve 12, so that the spring 26 is in a stretched state, and when the capsule 20 is deflated, the stopper plate 28 slides to the end close to the sleeve 12 under the restoring force of the spring 26, so that the latch 14 is disengaged from the latch slot 15, and the sleeve 12 is conveniently taken out of the motor output shaft 9.
Further, each telescopic rod 23 further comprises a clamping block 29, and the clamping block 29 is sleeved outside the inner column 25 and is connected with the end of the sliding groove 27 in a clamping manner.
In the present embodiment, after the stopper plate 28 is mounted inside the slide groove 27, the engagement block 29 is engaged with the end of the slide groove 27, thereby preventing the stopper plate 28 from being separated from the slide groove 27 due to excessive inflation of the bag body 20.
Further, the linear module 2 includes a slide rail 30, a first servo motor 31, a first lead screw 32 and a first lead screw sleeve 33, the slide rail 30 is detachably connected to the workbench 1 and is located at one end of the workbench 1 away from the adjustable mounting base 5, the first lead screw 32 is arranged at an output end of the first servo motor 31, the first lead screw 32 is located inside the slide rail 30, the first lead screw sleeve 33 is arranged on the first lead screw 32, the first lead screw sleeve 33 is detachably connected to the sliding plate 7, and the sliding plate 7 is slidably connected to the slide rail 30.
In this embodiment, the first servo motor 31 is started to drive the first lead screw 32 to rotate, and the sliding plate 7 is detachably connected to the sliding rail 30 and slides on the sliding rail 30, so as to drive the digital display chest developer 3 to move on the sliding rail 30 at a constant speed.
Further, adjustable mount pad 5 includes mounting bracket 34, mounting panel 35 and lifting unit 36, the both sides of mounting bracket 34 all are provided with spout 37, mounting panel 35 with spout 37 sliding connection, still be provided with on the workstation 1 lifting unit 36, lifting unit 36 is located mounting panel 35's below, lifting unit 36's output with mounting panel 35 is corresponding, being surveyed motor 6 with the connection is dismantled to mounting panel 35.
In the present embodiment, the lifting unit 36 is started to drive the mounting plate 35 to slide on the sliding groove 37, so as to adjust the height of the motor 6 to be tested on the mounting plate 35, so that the motor output shaft 9 on the motor 6 to be tested is always consistent with the height of the digital display chest expander 3 when motors with different sizes are tested.
Further, the lifting unit 36 includes a first pushing mechanism 38, a second pushing mechanism 39 and a scissor holder 40, the scissor holder 40 is located below the mounting plate 35, the first pushing mechanism 38 and the second pushing mechanism 39 are respectively disposed at two ends of the scissor holder 40, the scissor holder 40 is formed by movably intersecting a first connecting rod 41 and a second connecting rod 42, one end of the first connecting rod 41 corresponds to an output end of the first pushing mechanism 38, the other end of the first connecting rod 41 is located below the mounting plate 35, one end of the second connecting rod 42 corresponds to an output end of the second pushing mechanism 39, and the other end of the second connecting rod 42 is located below the mounting plate 35.
In the present embodiment, the first pushing mechanism 38 pushes the first connecting rod 41, and the second pushing mechanism 39 pushes the second connecting rod 42, so that the opening and closing angle between the first connecting rod 41 and the second connecting rod 42 is changed, and the height of the mounting plate 35 is adjusted by pushing the mounting plate 35 to slide on the chute 37 by the height change of the splayed scissor holder 40 itself.
Further, the first pushing mechanism 38 and the second pushing mechanism 39 all include a second servo motor 43, a second lead screw 44 and a second lead screw sleeve 45, two the second servo motor 43 all with the workbench 1 is detached and connected, and is located respectively on both sides of the mounting rack 34, the output end of the second servo motor 43 is provided with the second lead screw 44, the second lead screw 44 is provided with the second lead screw sleeve 45, the first connecting rod 41 and the second connecting rod 42 are respectively hinged to the second lead screw sleeve 45.
In this embodiment, the second servo motor 43 is started to drive the second lead screw 44 to rotate, and since the first connecting rod 41 and the second connecting rod 42 are respectively hinged to one second lead screw sleeve 45, the opening and closing angle between the first connecting rod 41 and the second connecting rod 42 is driven to change, so as to push the mounting plate 35 to slide in the sliding groove 37, and further adjust the height of the mounting plate 35.
Referring to fig. 8, the present invention further provides a torque output control method applied to the above-mentioned permanent magnet synchronous motor positioning torque testing apparatus, comprising the following steps:
s1: firstly, one end of the tension rope 4 is tied tightly on the second hanging ring 19, and then the tension rope 4 is uniformly wound on the spiral groove 18;
s2: when different motors are tested, the sleeve 12 is sleeved outside the motor output shaft 9, so that the fixture block 14 corresponds to the clamping groove 15, the valve core 17 is used for inflating the inside of the telescopic air bag 13, the telescopic air bag 13 is inflated and expanded, the fixture block 14 is clamped into the clamping groove 15, and the sleeve 12 is fixed on the corresponding tested motor 6;
s3: then, the other end of the tension rope 4 is hung on the drag hook 8 by using the first hanging ring 10, and the tension rope 4 is in a tight state;
s4: and finally, starting the linear module 2, driving the digital display chest expander 3 on the sliding plate 7 to move at a constant speed, recording the reading on the digital display chest expander 3 in real time, and calculating the positioning torque of the motor 6 to be measured according to the following formula after the motor output shaft 9 rotates for a circle: t is (Fmax-Fmin) × r, where T is the positioning torque, Fmax is the maximum value displayed by the digital display chest expander 3, Fmin is the minimum value displayed by the digital display chest expander 3, and r is the radius of the motor output shaft 9 of the motor 6 to be measured.
In this embodiment, one end of the tensile cord 4 is firstly tied up on the second hanging ring 19, then the tensile cord 4 is uniformly wound on the spiral groove 18, when different motors are tested, the sleeve 12 is sleeved on the outer portion of the motor output shaft 9, so that the clamping block 14 corresponds to the clamping groove 15, the valve core 17 is used to inflate the inside of the telescopic airbag 13, so that the telescopic airbag 13 is inflated and expanded, the clamping block 14 is clamped into the clamping groove 15, so that the sleeve 12 is fixed on the corresponding motor 6 to be tested, then the other end of the tensile cord 4 is hung on the drag hook 8 by using the first hanging ring 10, at this time, the tensile cord 4 is in a tight state, and finally, the linear module 2 is started to drive the digital display tensile device 3 on the sliding plate 7 to move at a uniform speed, and recording the reading on the digital display chest expander 3 in real time, and calculating the positioning torque of the measured motor 6 according to the following formula after the motor output shaft 9 rotates for a circle: t is (Fmax-Fmin) × r, where T is the detent torque, Fmax is the maximum displayed by the digital display chest expander 3, Fmin is the minimum displayed by the digital display chest expander 3, and r is the radius of the motor output shaft 9 of the motor 6 to be measured.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A permanent magnet synchronous motor positioning torque testing device is characterized in that,
the positioning torque testing device of the permanent magnet synchronous motor comprises a workbench, a linear module, a digital display chest expander, a tension rope, an adjustable mounting seat and a tested motor, one end of the workbench is provided with the linear module, the other end of the workbench is provided with the adjustable mounting seat, the output end of the linear module is provided with a sliding plate, the digital display chest developer is detachably connected with the sliding plate, a drag hook is arranged at one end of the digital display chest expander close to the adjustable mounting seat, the motor to be measured is arranged above the adjustable mounting seat, the output end of the tested motor is provided with a motor output shaft, the height of the motor output shaft is consistent with that of the drag hook, one end of the pull rope is provided with a first hanging ring, the other end of the pull rope is provided with a fixing piece, the first hanging ring is matched with the draw hook, and the fixing piece is matched with the output shaft of the motor;
the fixing piece comprises a sleeve, a telescopic air bag and a clamping block, a clamping groove is formed in the motor output shaft, the sleeve is sleeved outside the motor output shaft, the telescopic air bag is arranged on the inner side wall of the sleeve, the clamping block is arranged on the inner side wall of the telescopic air bag, the clamping block is connected with the clamping groove in a clamped mode, an air inlet hole is formed in the outer side wall of the sleeve and is located at one end of the sleeve, a valve core is arranged on the air inlet hole, a spiral groove is further formed in the outer side wall of the sleeve, and a second hanging ring is arranged at one end of the spiral groove.
2. The positioning torque testing device of the permanent magnet synchronous motor according to claim 1,
the telescopic airbag comprises an airbag body and a skeleton, wherein the outer side wall of the airbag body is bonded with the inner side wall of the sleeve, an air hole is formed in the airbag body and corresponds to the air inlet hole, the inner side wall of the airbag body is provided with the fixture block, the skeleton is arranged inside the airbag body and comprises a plurality of telescopic rods, and the telescopic rods are uniformly distributed inside the airbag body.
3. The positioning torque testing device of the permanent magnet synchronous motor according to claim 2,
every the telescopic link all includes outer post, inner prop and spring, the outer post with the inner prop all bonds in the inside of utricule, the outer post is located the utricule is close to telescopic one end, the inner prop is located the utricule is close to the one end of motor output shaft, be provided with the sliding tray on the outer post, the inside of sliding tray is provided with the spring, the inner prop is kept away from the one end of motor output shaft is provided with the limiting plate, the limiting plate is located the inside of sliding tray, the one end of spring with the bottom welding of sliding tray, the other end of spring with the limiting plate welding, the sliding tray with the limiting plate all is regular polygon structure setting.
4. The positioning torque testing device of the permanent magnet synchronous motor according to claim 3,
each telescopic link all still includes the block, the block cover is established the outside of interior post, and with the tip block of sliding tray is connected.
5. The positioning torque testing device of the permanent magnet synchronous motor according to claim 1,
the linear module comprises a slide rail, a first servo motor, a first lead screw and a first lead screw sleeve, the slide rail is detachably connected with the workbench and is located at one end, away from the adjustable mounting seat, of the workbench, the first lead screw is arranged at the output end of the first servo motor and is located inside the slide rail, the first lead screw is provided with the first lead screw sleeve, the first lead screw sleeve is detachably connected with the sliding plate, and the sliding plate is slidably connected with the slide rail.
6. The torque output control method applied to the permanent magnet synchronous motor positioning torque testing device of claim 1 is characterized by comprising the following steps:
firstly, one end of the tension rope is tied on the second hanging ring, and then the tension rope is uniformly wound on the spiral groove;
when different motors are tested, the sleeve is sleeved outside the motor output shaft, so that the clamping block corresponds to the clamping groove, the valve core is used for inflating the inside of the telescopic air bag, the clamping block is clamped into the clamping groove after the telescopic air bag is inflated and expanded, and the sleeve is fixed on the corresponding tested motor;
then, the other end of the tension rope is hung on the drag hook by using the first hanging ring, and the tension rope is in a tight state at the moment;
and finally, starting the linear module to drive the digital display chest developer on the sliding plate to move at a constant speed, recording the reading on the digital display chest developer in real time, and calculating the positioning torque of the motor to be measured according to the following formula after the output shaft of the motor rotates for a circle: and T is (Fmax-Fmin) x r, wherein T is a positioning torque, Fmax is the maximum value displayed by the digital display chest expander, Fmin is the minimum value displayed by the digital display chest expander, and r is the radius of the motor output shaft of the motor to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111647931.7A CN114486026B (en) | 2021-12-30 | 2021-12-30 | Permanent magnet synchronous motor positioning torque testing device and torque output control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111647931.7A CN114486026B (en) | 2021-12-30 | 2021-12-30 | Permanent magnet synchronous motor positioning torque testing device and torque output control method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN114486026A true CN114486026A (en) | 2022-05-13 |
| CN114486026B CN114486026B (en) | 2023-03-24 |
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| CN202111647931.7A Active CN114486026B (en) | 2021-12-30 | 2021-12-30 | Permanent magnet synchronous motor positioning torque testing device and torque output control method thereof |
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