CN206759250U - A kind of structure by piezoelectric element to motor stator tooth tangential vibrations active control - Google Patents
A kind of structure by piezoelectric element to motor stator tooth tangential vibrations active control Download PDFInfo
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- CN206759250U CN206759250U CN201720540450.9U CN201720540450U CN206759250U CN 206759250 U CN206759250 U CN 206759250U CN 201720540450 U CN201720540450 U CN 201720540450U CN 206759250 U CN206759250 U CN 206759250U
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- motor stator
- tooth
- piezo actuator
- active control
- motor
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- 238000001514 detection method Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 6
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000004804 winding Methods 0.000 description 3
- 239000002033 PVDF binder Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
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- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 210000003464 cuspid Anatomy 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The utility model discloses a kind of structure by piezoelectric element to motor stator tooth tangential vibrations active control.Including piezo actuator, vibrating sensor, vibrating controller and power amplifier, fixation is equipped with piezo actuator and vibrating sensor on the both sides side of tooth, the tangential vibrations signal of vibrating sensor detection collection motor stator tooth, and tangential vibrations signal is sent to vibrating controller, vibrating controller driving is laid on the piezo actuator on motor stator flank to change the tangential dynamic characteristics of motor stator tooth, so as to realize that the tangential vibrations to motor stator tooth carry out active control.The utility model can carry out active control to the tangential vibrations of tooth on motor stator, so as to reach the purpose of controlled motor vibration and noise.
Description
Technical field
Technical field of motors is the utility model is related to, motor stator tooth is cut by piezoelectric element more particularly to one kind
To the structure of Active Vibration Control, active control is carried out to the tangential vibrations of tooth on motor stator using piezo actuator.
Background technology
Motor occupies an important position in national economy and daily life.Motor is caused in the course of the work
Vibration and noise, the performance of motor is not only influenceed, but also pollution is produced to environment.As people vibrate and made an uproar to electronic product
Oneself warp of the raising of sound requirement, the vibration of motor and noise, which turns into, weighs one important technical indicator of motor quality.
The stator structure of motor is either still all tied using the structure of iron core and shell combination using the entirety of iron core
Structure, generally can all be provided with a number of groove on stator, and the part between two grooves is referred to as tooth.The winding of motor is just according to certain
Requirement be placed in these grooves.Magnetic field, motor stator magnetic field and rotor field will be formed on rotor by being powered on winding
Interaction, to realize the conversion of electromechanical energy.Inherently by electromagnetism tangentially and radially on tooth in the motor course of work
Power, these electromagnetic forces, particularly tangential electromagnetic force can not only cause the vibration of tooth on motor stator, it is often more important that the vibration of tooth
It can also be further transferred on the stator of periphery, cause the overall vibration of motor.To there was only the electricity of several teeth on those stators
For machine, such as revolving-armature type synchronous motor, direct current generator, switched reluctance machines, the magneto of concentratred winding structure, tooth
Tangential vibrations become apparent, if directly taking vibration reducing measure on tooth, more obvious effectiveness in vibration suppression can be obtained.
At present, to the control of the tangential vibrations of tooth on motor stator, typically using some passive control devices, such as increase
The thickness of canine tooth, using helical teeth, increase air gap, on tooth using material of high-damping etc., these measures are in some specific conditions
Certain effect may be obtained down, but after the working condition of motor changes, the tangential vibrations of tooth are still very tight
Weight, it is difficult to fundamentally solve vibration and the noise problem of motor.
Utility model content
Developing rapidly based on Active Vibration Control technology and piezoelectric, the utility model proposes one kind to pass through piezoelectricity
Element is to the structure and its mode of motor stator tooth tangential vibrations active control, so as to on motor stator under the conditions of any
The tangential vibrations of tooth carry out active control, to reduce the vibration of motor and noise problem.
The technical solution of the utility model is：
The utility model includes piezo actuator, is fixed on the both sides side of tooth and is equipped with piezo actuator, utilizes laying
Piezo actuator on motor stator flank changes the dynamic characteristics of motor stator tooth, realizes and motor stator tooth is shaken
The dynamic purpose for carrying out active control.
Described tooth position in or beyond motor stator on side face, multiple teeth along side face in or beyond motor stator uniformly at intervals.
Piezo actuator of the present utility model can be selectively laid on the tooth of a portion or whole
On tooth.And for the laying on every single tooth, piezo actuator with right and wrong all standing local can be laid or cover entirely
The laying of lid ground.
Described piezo actuator can be individual layer, bilayer or multilayer piezoelectric ceramic (PZT), piezopolymer (PVDF) or
The grand fibrous composite of person's piezoelectricity (MFC) structure or one or several kinds of combining structures therein.
Also include vibrating sensor, vibrating controller and power amplifier, vibrating sensor is fixed on the side of tooth, vibration
The signal output part of sensor is connected with vibrating controller, and vibrating controller is connected through power amplifier with piezo actuator.
Described vibrating sensor is acceleration transducer, velocity sensor or strain transducer.
When multiple piezo actuators are connected with power amplifier, using independent mode, series system, parallel way or
One or several kinds of combinations in person's series-parallel system are attached.
Independent mode：Each piezo actuator is connected with power amplifier respectively.
Series system：Power amplifier is connected to after multiple piezo actuators are connected.
Parallel way：Power amplifier will be connected to after multiple piezo actuator parallel connections.
Series-parallel system：In parallel again or first parallel connection is connected to power after connecting again after multiple piezo actuators are first connected
Amplifier.
The shape of described piezo actuator is for rectangle, and rectangular short side is along motor axial direction during laying.
Described piezo actuator is fixed in any one of tooth two sides on motor stator or simultaneously on two.And
And laying or the laying of both sides side for same side, can be symmetrical laying or asymmetric laying.
The fixation paving mode of described piezo actuator can be bonding method or other any feasible modes.
On the tooth is per side side, the laying direction of multiple piezo actuators can be according to demand along motor axial direction cloth
Put.
In order to be protected to the piezo actuator being laid on tooth, other materials are equipped with piezo actuator outer wrapping
Material, other materials specifically refer to the nonmetallic materials such as in general metal or plastics, rubber.
The beneficial effects of the utility model are：
The utility model can be cut by setting piezoelectric element on the stator teeth to be vibrated to tooth on motor stator
Active control is carried out to vibration, is significantly decreased the vibration of motor.
Brief description of the drawings
Fig. 1 is the front view that tooth peripheral side has laid Integral electric machine stator after piezo actuator.
Fig. 2 is the left-hand profile that tooth peripheral side has laid Integral electric machine stator after piezo actuator.
Fig. 3 is the profile that tooth peripheral side has laid Integral electric machine stator part after piezo actuator.
Fig. 4 is the front view that tooth peripheral side has laid combined electrical machine stator after piezo actuator.
Fig. 5 is the left-hand profile that tooth peripheral side has laid combined electrical machine stator after piezo actuator.
Fig. 6 is the profile that tooth peripheral side has laid combined electrical machine stator part after piezo actuator.
Fig. 7 is the connection figure that piezo actuator individually connects on motor stator tooth.
Fig. 8 is the connection figure after piezo actuator part in parallel on motor stator tooth.
Fig. 9 is with motor overall structure front view of the present utility model.
Figure 10 is with motor overall structure left view of the present utility model.
Figure 11 is with active control system structured flowchart of the present utility model.
In figure：Motor (1), piezo actuator (11), motor stator (12), stator core (121), casing (122), tooth
(13), front and rear cover (15a and 15b), front and back bearings (16a and 16b), left and right footing (14a and 14b)；Vibrating sensor (2),
Vibrating controller (3), power amplifier (4).
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
For the difference of motor stator structure, it is illustrated with the embodiment of two typical electric machine structures, but it is unlimited
In following examples：
Embodiment 1
As shown in Figures 1 and 2, the present embodiment includes integrally-built motor stator 12 and piezo actuator 11.It is overall
Several teeth 13 are disposed with the inner surface of the motor stator 12 of structure.
As shown in figure 3, piezo actuator 11 is rectangle, it is laid in tooth two sides a and b axial direction, lays vertically
Direction for axially, each 11 radially arranged laying of piezo actuator, so as to formed it is a kind of can be to the tangential of motor stator tooth
Vibration carries out the stator toothing of active control.
Piezo actuator 11 can use individual layer, bilayer or multilayer piezoelectric ceramic (PZT), in the outside of piezo actuator 11
Repave provided with general metal material to be protected to piezo actuator 11.
Embodiment 2
As shown in figs. 4 and 5, the present embodiment includes the motor stator 12 and piezo actuator 11 of combining structure；Combination knot
The motor stator 12 of structure is made up of stator core 121 and casing 122, and stator core 121 is fastened on the inner surface of casing 122；Iron
Several teeth 13 are provided with the inner surface of the heart 121.
As shown in fig. 6, piezo actuator 11 is rectangle, and tooth two sides a and b axle are laid on according to certain rule
Upwards, direction is laid as axially, each 11 radially arranged laying of piezo actuator can be to motor stator so as to form one kind
The vibration of tooth carries out the stator toothing of active control.
Piezo actuator 11 can use piezopolymer (PVDF) or the grand fibrous composite of piezoelectricity (MFC), press
The outside of electric actuator 11 is repaved provided with nonmetallic materials such as in general plastics, rubber to be protected to piezo actuator 11.
Other structures outside for motor stator, the structure of motor 1 of specific implementation is as shown in accompanying drawing 9 and Figure 10, including electricity
Be equipped with machine rotor 10, tooth the motor stator 12 of piezo actuator, front and rear cover 15a and 15b, front and back bearings 16a and 16b,
Left and right footing 14a and 14b.Rotor 10 is fixed on front and rear cover 15a and 15b by front and back bearings 16a and 16b, front and rear
End cap 15a and 15b are fixed on the both ends that flank is equipped with the motor stator 12 of piezo actuator, and motor stator 12 passes through left and right
Lower margin 14a and 14b are fixed on pedestal.
As shown in Figure 11, vibrating sensor 2 is set on motor 1, and motor 1 is externally provided with vibrating controller 3 and power amplification
Device 4.One vibrating sensor 2 is fixed on the side a and/or side b of motor stator tooth, is equipped with the every of piezo actuator 11
Individual tooth is respectively provided with vibrating sensor 2, and vibrating sensor 2 is connected with vibrating controller 3；Vibrating controller 3 and the phase of power amplifier 4
Even；Power amplifier 4 is connected with several joints for the piezo actuator 11 being arranged on motor stator flank.
For the connected mode of piezo actuator 11 on motor stator tooth, illustrate as shown in accompanying drawing 7 and Fig. 8：
As shown in fig. 7, the both threads of each piezo actuator are formed 2n by the piezo actuator 11 on motor tooth respectively
Joint a1+b1, a2+b3 ... an+bn, then power amplifier is each individually connected to, wherein n is the number of piezo actuator.
As shown in figure 8, it is in parallel using first there is the piezo actuator of identical function to carry out several, form 2k joint
A1+b1, a2+b3 ... ak+bk, wherein k are the number of piezo actuator parallel branch.Parallel connection therein can be adjacent parallel connection,
Can also be that jump is in parallel.
Or the Hybrid connections mode that independent mode is combined with parallel way is carried out, form 2m joints a1+b1, a2+
b3,…am+bm, wherein m be the number of piezo actuator parallel branch with the number of the piezo actuator that is individually connected and.
Vibrating sensor 2 is fixed on the side of motor stator tooth, with the tangential vibrations of measurement motor stator tooth, and letter
Number it is transferred to vibrating controller 3；Vibrating controller 3 passes through the power amplification of power amplifier 4 according to dividing for piezo actuator on tooth
Piezo actuator vibration is driven, to change the original tangential dynamic characteristics of tooth on motor stator, so as to reach to tooth on motor
Tangential vibrations carry out the purpose of active control.
Claims (4)
1. a kind of structure by piezoelectric element to motor stator tooth tangential vibrations active control, motor stator is provided with tooth, its
It is characterised by：Including be laid on motor stator flank piezo actuator, vibrating sensor (2), vibrating controller (3) and
Power amplifier (4), vibrating sensor (2) are fixed on the side of tooth, and vibrating sensor (2) is connected with vibrating controller (3), shaken
Movement controller (3) is connected through power amplifier (4) with piezo actuator (11).
2. a kind of structure by piezoelectric element to motor stator tooth tangential vibrations active control according to claim 1,
It is characterized in that：Described piezo actuator (11) is fixed in any one of tooth two sides on motor stator or simultaneously two
On individual.
3. a kind of structure by piezoelectric element to motor stator tooth tangential vibrations active control according to claim 1,
It is characterized in that：When multiple piezo actuators (11) are connected with power amplifier (4), using independent mode, series system,
One or several kinds of combinations in parallel way or series-parallel system are attached.
4. a kind of structure by piezoelectric element to motor stator tooth tangential vibrations active control according to claim 1,
It is characterized in that：The shape of described piezo actuator (11) is for rectangle, and rectangular short side is along motor axial direction during laying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720540450.9U CN206759250U (en) | 2017-05-16 | 2017-05-16 | A kind of structure by piezoelectric element to motor stator tooth tangential vibrations active control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720540450.9U CN206759250U (en) | 2017-05-16 | 2017-05-16 | A kind of structure by piezoelectric element to motor stator tooth tangential vibrations active control |
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| Publication Number | Publication Date |
|---|---|
| CN206759250U true CN206759250U (en) | 2017-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720540450.9U Active CN206759250U (en) | 2017-05-16 | 2017-05-16 | A kind of structure by piezoelectric element to motor stator tooth tangential vibrations active control |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4075646A4 (en) * | 2020-01-16 | 2023-01-25 | Mitsubishi Heavy Industries, Ltd. | Magnetic geared rotating electrical machine and manufacturing method |
-
2017
- 2017-05-16 CN CN201720540450.9U patent/CN206759250U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4075646A4 (en) * | 2020-01-16 | 2023-01-25 | Mitsubishi Heavy Industries, Ltd. | Magnetic geared rotating electrical machine and manufacturing method |
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