CN107607235B - A kind of cogging torque of permanent magnet motor measuring device - Google Patents
A kind of cogging torque of permanent magnet motor measuring device Download PDFInfo
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- CN107607235B CN107607235B CN201710827596.6A CN201710827596A CN107607235B CN 107607235 B CN107607235 B CN 107607235B CN 201710827596 A CN201710827596 A CN 201710827596A CN 107607235 B CN107607235 B CN 107607235B
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Abstract
The present invention discloses a kind of cogging torque of permanent magnet motor measuring device, including bracket, horizontal base, angle mark post, protractor, torsion bar, floating block, container and mat material, container is placed on pedestal, there is magnitude graticule on bracket, cogging torque value after intuitive mark water level depth or conversion, the angle mark post is a right angle thin bar, it pastes on stator one end, the other end is suspended from before protractor, adjustment is fixed, rotor relative position, the torsion bar is all right angle bar, crossbar end is horizontally fixed on shaft encoder end together with protractor, vertical pole end has a level board for pasting floating block, floating block is put into container bottom, it is in a horizontal position before measuring with mat material holding torque bar crossbar sections, and there is no water inside container.Operation of the present invention is simple, and device materials are easy to get and make simply, and measurement range is not easy to be limited.
Description
Technical field
The invention belongs to motor fields, and in particular to a kind of cogging torque of permanent magnet motor measuring device.
Background technique
Magneto existing cogging torque measurement common method has: dynamometry, counterweight method, electronic scale method, voltage method,
Following point easily occur in sensor method, torque meter method, above-mentioned measurement method: dynamometry needs to remain tension level, and
Ignore the influence of dynamometer self gravity, operation difficulty is big；Counterweight method needs to prepare and the matched system of institute's measured motor cogging torque
Column counterweight；Electronic scale method needs to guarantee that the level of balancing pole any moment, step are comparatively laborious；Voltage method belongs to indirect measurement,
Method is complicated and is only applicable to induced electromotive force with the more sensitive magneto of M curve variation；Sensor method and torque meter
Method is more accurate, but not only needs the instruments such as special torque sensor, torque measurer, it is also necessary to matched dragging motor,
The equipment such as the pulse power, higher cost.These methods acquire a certain degree of difficulty on not only operating, and need toward contact according to institute's measured motor tooth
Slot torque range replaces the tool or instrument of different ranges, and application limitation is larger.
Summary of the invention
It is an object of that present invention to provide it is a kind of it is easy to operate, device assembly is simply easy to get, measurement range be not easy it is limited forever
Magneto cogging torque measuring device.
The technical solution of the present invention is as follows: a kind of cogging torque of permanent magnet motor measuring device, including angle mark post, protractor,
Torsion bar, floating block, bracket, container, mat material, bracket and horizontal base with magnitude graticule, the angle mark post and torque
Bar is all L shape, and protractor is fixed on the axle stretch end end that motor and its encoder are connect, angulation with one end of torsion bar cross bar
The bottom edge of device is parallel with torsion bar cross bar, and angle mark post crossbar end is pasted at motor stator outer diameter, and angle mark post vertical pole is outstanding
It is overlapped before protractor, and with the center line of protractor, bracket and the orthogonal connection of horizontal base, is leaned on horizontal base
It is placed with container at nearly bracket, container fills water, and one end of torsion bar vertical pole is pasted with floating block, and floating block is placed in inside container, pad
Material is placed between bracket base and container.
The present invention also has following technical characteristic:
1, the floating block regular shape, upper and lower surfaces are parallel and horizontal cross-sectional area is fixed.
2, water is filled in container when measuring.
3, the magnitude graticule of bracket can intuitively read the depth h of injection water as needed, to be calculated as cogging torque
Numerical value, calculation method are as follows:
When torsion bar is light weight beam: Tcog=(ρ gSh-G) × L；
L is distance of the electrical axis to torsion bar vertical pole center line, and ρ is the density of water, and S is the cross-sectional area of floating block, and G is
The total force of floating block and torsion bar,
When torsion bar is non-light weight beam: Tcog=(ρ gSh-G1-0.5G2)×L
Wherein G1For the total force of floating block and torsion bar lever part, G2For the gravity of torsion bar crossbar sections.
4, the floating block is cuboid or cylindrical body.
The present invention has the advantages that easy to operate, using water buoyancy direction always vertically upward, as rotor outside
Active force reduces survey crew's operation difficulty；Device assembly right angle bar, bracket, protractor material are easy to get and make simply, float
Block, water container have no stringent geomery requirement, can select replacement items according to field condition；Measure different range abilities
Motor cogging torque, it is only necessary to adjust the sectional area or depth of floating block and container, cutting, splicing can fast implement, measure model
It encloses and is not easy to be limited.
Detailed description of the invention
Fig. 1 is main view of the present invention；
Fig. 2 is the side view of Fig. 1；
Fig. 3 is the top view of Fig. 2.
Wherein 1. angle mark post, 2. protractors, 3. torsion bars, 3a. level board, 4. floating blocks, 5. brackets, 5a. torque graticule,
5b. horizontal base, 6. containers, 7. water, 8. mat material, 1a, angle mark post cross bar, 1b, angle mark post vertical pole.
Specific embodiment
Now in conjunction with attached drawing, the invention will be further described.
Embodiment 1
As shown in Figure 1-3, a kind of cogging torque of permanent magnet motor measuring device, including angle mark post 1, protractor 2, torsion bar
3, floating block 4, bracket 5, container 6, mat material 8, the bracket 5 with magnitude graticule 5a and horizontal base 5b, 1 He of angle mark post
Torsion bar 3 is all L shape, and protractor 2 is fixed on the axle stretch end end that motor and its encoder are connect with one end of 3 cross bar of torsion bar
The bottom edge in portion, protractor 2 is parallel with 3 cross bar of torsion bar, and the end angle mark post cross bar 1a is pasted at motor stator outer diameter, angle
Mark post vertical pole 1b is suspended from before protractor 2, and is overlapped with the center line of protractor 2, and bracket 5 and horizontal base 5b are orthogonal
It connects, is placed with container 6 at bracket 5 on horizontal base 5b, one end of 3 vertical pole of torsion bar is pasted with floating block 4, and floating block 4 is set
Inside container 6, mat material 8 is placed between bracket base 5b and container 6, and the floating block is cylindrical body.
Measurement method of the present invention: the preparation before measurement to measured motor as shown in Figure 1, will be placed on testboard, with rack pad
Certain altitude is played, protractor 2 is fixed on the axle stretch end end that motor is connect with encoder using screw with 3 one end of torsion bar,
The bottom edge of protractor 2 and torsion bar cross bar keeping parallelism, then torsion bar vertical pole and 4 firm pasting of floating block are realized under Hard link
The conduction of power, floating block 4 are put into the bottom of empty container 6, and bracket 5 is placed in by motor, and container 6 is placed on the horizontal base of bracket 5
On 5b, using the height of 8 adjustment container 6 of mat material, the crossbar sections of holding torque bar 3 are in horizontality, record 4 following table of floating block
Face corresponds to the scale h1 on bracket 5, and then the end angle mark post cross bar 1a is pasted at motor stator outer diameter, and angle mark post is vertical
Bar 1b is suspended from before protractor 2, is overlapped angle mark post cross bar center line with the center line of protractor 2, it is opposite to be denoted as stator and rotor
Position X1.When measurement starts, water 7 is slowly injected into container 6, the height of water level that record torsion bar 3 begins to ramp up the moment is corresponding
Scale h2 on bracket 5 simultaneously stops filling the water, and the difference of h1 and h2 are SEA LEVEL VARIATION height.It is selected according to α ° of degree of motor slot-pitch angle
Relative angle α1°, angle mark post vertical pole 1b corresponds to the scale of protractor 2 for stator rotation alpha1°, direction of rotation is suitable, equal counterclockwise
Can, it is denoted as stator and rotor relative position X2 at this time, measurement method is same as above, and the water under different stator and rotor relative positions can be obtained accordingly
Position change in elevation, wherein maximum height h calculates motor cogging torque for selection, when torsion bar is light weight beam:
Tcog=(ρ gSh-G) × L
Wherein as shown in figure 3, L is distance of the electrical axis to 3 vertical pole center line of torsion bar, ρ is the density of water, and S is floating
The cross-sectional area of block 4, G are the total force of floating block 4 and torsion bar 3.
When torsion bar 3 be non-light weight beam, then need further to accurately calculate:
Tcog=(ρ gSh-G1-0.5G2)×L
Wherein G1For the total force of floating block 4 and 3 lever part of torsion bar, G2It is other for the gravity of 3 crossbar sections of torsion bar
Variable is same as above.
Claims (4)
1. a kind of cogging torque of permanent magnet motor measuring device, including angle mark post (1), protractor (2), torsion bar (3), floating block
(4), bracket (5), container (6), mat material (8), bracket (5) and horizontal base (5b) with magnitude graticule (5a), feature exists
In the angle mark post (1) and torsion bar (3) are all L shape, and protractor (2) and one end of torsion bar (3) cross bar are fixed on
The axle stretch end end of motor and its encoder connection, the bottom edge of protractor (2) is parallel with torsion bar (3) cross bar, and angle mark post is horizontal
The end bar (1a) is pasted at motor stator outer diameter, and angle mark post vertical pole (1b) is suspended from before protractor (2), and and protractor
(2) center line is overlapped, bracket (5) and horizontal base (5b) orthogonal connection, on horizontal base (5b) at bracket (5)
It is placed with container (6), one end of torsion bar (3) vertical pole is pasted with floating block (4), and floating block (4) is placed in container (6) inside, mat material (8)
It is placed between bracket base (5b) and container (6)；Floating block (4) regular shape, upper and lower surfaces are parallel and level cross-sectionn
Product is fixed.
2. cogging torque of permanent magnet motor measuring device according to claim 1, it is characterised in that: filled in container when measurement
Water.
3. cogging torque of permanent magnet motor measuring device according to claim 1, it is characterised in that: the magnitude mark of bracket (5)
Line can intuitively read the depth h of injection water (7) as needed, to be calculated as cogging torque numerical value, calculation method are as follows: work as power
Square bar (3) is light weight beam: Tcog=(ρ gSh-G) × L；L is electrical axis to the distance of torsion bar (3) vertical pole center line, and ρ is water
Density, S be floating block (4) cross-sectional area, G be floating block (4) and torsion bar (3) total force, when torsion bar (3) be non-lightweight
Bar: Tcog=(ρ gSh-G1-0.5G2)×L
Wherein G1For the total force of floating block (4) and torsion bar (3) lever part, G2For the gravity of torsion bar (3) crossbar sections.
4. cogging torque of permanent magnet motor measuring device according to claim 1 or 2, it is characterised in that: the floating block (4) is
Cuboid or cylindrical body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710827596.6A CN107607235B (en) | 2017-09-14 | 2017-09-14 | A kind of cogging torque of permanent magnet motor measuring device |
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| CN201710827596.6A CN107607235B (en) | 2017-09-14 | 2017-09-14 | A kind of cogging torque of permanent magnet motor measuring device |
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| CN107607235A CN107607235A (en) | 2018-01-19 |
| CN107607235B true CN107607235B (en) | 2019-10-29 |
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| CN109029823A (en) * | 2018-09-03 | 2018-12-18 | 快意电梯股份有限公司 | Synchnorous gearless dragging machine braking-force detecting device and detection method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116718A (en) * | 2011-01-17 | 2011-07-06 | 浙江海洋学院 | Water pressure resistance device for fishing floater |
| CN103499406A (en) * | 2013-09-18 | 2014-01-08 | 浙江工商大学 | Perpendicularly-hung high-precision torque testing device in thermal vacuum environment |
| JP2014095671A (en) * | 2012-11-12 | 2014-05-22 | Tohnichi Mfg Co Ltd | Torque measuring equipment for reference |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2449251A1 (en) * | 2009-06-30 | 2012-05-09 | Turner Hunt | Power control protocol for a hydrokinetic device including an array thereof |
| CN105486443A (en) * | 2016-01-04 | 2016-04-13 | 湖南工业大学 | Single-support roller resistance coefficient test bench and test method |
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- 2017-09-14 CN CN201710827596.6A patent/CN107607235B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116718A (en) * | 2011-01-17 | 2011-07-06 | 浙江海洋学院 | Water pressure resistance device for fishing floater |
| JP2014095671A (en) * | 2012-11-12 | 2014-05-22 | Tohnichi Mfg Co Ltd | Torque measuring equipment for reference |
| CN103499406A (en) * | 2013-09-18 | 2014-01-08 | 浙江工商大学 | Perpendicularly-hung high-precision torque testing device in thermal vacuum environment |
Non-Patent Citations (1)
| Title |
|---|
| 水下机械手动力学模型及力矩影响研究;高涵，张明路等;《机械设计与制造》;20170331(第3期);第68-75页 * |
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