CN206807207U - A kind of stator structure being controlled by piezoelectric element to motor stator vibration - Google Patents
A kind of stator structure being controlled by piezoelectric element to motor stator vibration Download PDFInfo
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- CN206807207U CN206807207U CN201720541556.0U CN201720541556U CN206807207U CN 206807207 U CN206807207 U CN 206807207U CN 201720541556 U CN201720541556 U CN 201720541556U CN 206807207 U CN206807207 U CN 206807207U
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- 229910052742 iron Inorganic materials 0.000 description 1
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- 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
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- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The utility model discloses a kind of stator structure being controlled by piezoelectric element to motor stator vibration.Including piezo actuator, vibrating sensor, vibrating controller and power amplifier, fixation is equipped with piezo actuator and vibrating sensor on motor stator surface, the vibration signal of vibrating sensor detection collection motor stator is simultaneously sent to vibrating controller, the piezo actuator that vibrating controller driving is laid on motor stator is vibrated to change the dynamic characteristics of motor stator, so as to realize that machinery and electric and magnetic oscillation and noise to motor stator carry out active control.The utility model can carry out active control to the machinery and electric and magnetic oscillation of motor stator, be significantly reduced the vibration of motor.
Description
Technical field
Technical field of motors is the utility model is related to, motor stator is vibrated by piezoelectric element more particularly to a kind of
The stator structure being controlled.
Background technology
All kinds of motors to be worked with electromagnetic principle, such as induction machine, magneto, switched reluctance machines, are current electricity
Nucleus equipment in energy transfer process, occupies an important position in national economy and daily life.
Motor caused vibration and noise in the course of the work, the performance of motor is not only influenceed, and environment is produced dirty
Dye.As people are own through turning into measurement motor product matter to electronic product vibration and the concern of noise, the vibration of motor and noise
Measure an important technical indicator.Particularly modern electrical machine develops towards the direction of high current, high-magnetodensity, light structuring, motor
Vibration and noise problem it is more prominent.
The vibration of motor and noise are by electric and magnetic oscillation and noise, mechanical oscillation and noise, ventilation vibration and noise three parts
Composition.Electric and magnetic oscillation and noise are due to the effect of electromagnetic field in motor gas-gap, are produced on surface of the stator and rotor close to air gap
With time and the electromagnetic force of spatial variations, stator (including support) and rotor are vibrated, cause surrounding air to pulse and produce
Raw noise.Mechanical oscillation and noise are vibration and noise caused by the imbalance as rotor, bearing, brush etc..Ventilation vibration
It is vibration and noise such as fan, the air flow in air channel or as caused by air force by ventilating part with noise.For rotating speed
In not high motor, ventilation vibration and noise also do not protrude typically.Therefore, it is main just to turn into many motors for electric and magnetic oscillation and noise
Vibration and noise source, study the electric and magnetic oscillation and noise characteristic of motor, be the key for solving motor oscillating and noise.
Because the stator of motor is the key component that motor realizes electromagnetic energy conversion, when motor realizes electromagnetic energy conversion
Electromagnetic force just act directly on the inner or outer surface of stator, so in motor the vibration of stator and noise be motor oscillating and
The core of noise.
At present, to motor stator vibration and the control of noise, typically using some passive control devices, such as using oblique
Groove, increase air gap, material of high-damping etc. is laid on stator, these measures may obtain necessarily under the conditions of some are specific
Effect, but after the rotating speed or working condition of motor change, the vibration of motor stator and noise are still extremely serious,
It is difficult to vibration and the noise problem for fundamentally solving motor.
Utility model content
Development based on Active Vibration Control and piezo actuator, the utility model proposes one kind to pass through piezoelectric element pair
The stator structure that is controlled of motor stator vibration, using piezo actuator to all kinds of motor stators that are worked with electromagnetic principle
Electromagnetism and mechanical oscillation carry out active control, active control can be carried out to the vibration of motor stator under the conditions of any, to reduce
Motor vibration and noise problem as caused by machinery and electromagnetism.
The technical solution of the utility model is：
The utility model includes piezo actuator, is fixed on motor stator surface and is equipped with piezo actuator, utilizes laying
Piezo actuator on motor stator surface changes the dynamic characteristics of motor stator, realizes machinery and electromagnetic vibration to motor
Dynamic and noise carries out the purpose of active control.
Piezo actuator of the present utility model can be selectively laid in the local surfaces of motor stator or electricity
On all surfaces of machine stator.
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 table of motor stator
On face and/or lower margin, the signal output part of vibrating sensor is connected with vibrating controller, vibrating controller through power amplifier with
Piezo actuator connects.
The vibration signal of described vibrating sensor detection collection motor stator is simultaneously sent to vibrating controller, vibration control
Device is laid on motor stator according to the distribution and vibration signal of piezo actuator on motor stator through power amplifier driving
Piezo actuator vibrate and change the dynamic characteristics of motor stator, so as to realizing to the machinery and electric and magnetic oscillation of motor stator and
Noise carries out active control.
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, tile shape or annular.Can be according to any direction during laying
Laying, annular refer to around circumferential complete or part-circular periphery the annular in motor stator surface.
Described piezo actuator is fixed on inner surface or/and the outer surface of motor stator.
The laying direction of piezo actuator described in difference can be with identical, can also be different.
Described piezo actuator can axially, circumferentially or with axis into the direction of unspecified angle be laid along motor.
Described piezo actuator can be symmetrical laying or asymmetric laying.
It can be bonding method or other any feasible modes that described piezo actuator, which fixes paving mode,.
In order to be protected to piezo actuator, other materials, other materials are equipped with piezo actuator outer wrapping
Material specifically refers 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 vibrated by the piezoelectric element being arranged on stator, to the machinery and electromagnetic vibration of motor
Dynamic to carry out active control, the vibration and noise for making motor stator are significantly decreased.
Brief description of the drawings
Fig. 1 is the front view for the motor unitary stator structure for being equipped with piezo actuator.
Fig. 2 is the left view profile for the motor unitary stator structure for being equipped with piezo actuator.
Fig. 3 is the front view for the box-like stator structure of group of motors for being equipped with piezo actuator.
Fig. 4 is the left view profile for the box-like stator structure of group of motors for being equipped with piezo actuator.
Fig. 5 is the connection figure that piezo actuator individually connects on motor stator.
Fig. 6 is the connection figure after piezo actuator part in parallel on motor stator.
Fig. 7 is the front view with electric machine structure of the present utility model.
Fig. 8 is the left view with electric machine structure of the present utility model.
Fig. 9 is the system architecture diagram with motor active control of the present utility model.
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 piezo actuator 11 and integrally-built stator 12；Described is whole
The stator 12 of body structure is provided with pull box 13 and left and right footing 14a and 14b.
Piezo actuator 11 is strip or tile-shaped, as shown in figure 1, according to axial and circumferential broken-up laying in motor stator
On 12 outer surface, a kind of stator structure that progress active control can be vibrated to motor stator is formed.
Piezo actuator 11 can be individual layer, bilayer or multilayer piezoelectric ceramic (PZT), in the outside of piezo actuator 11
Repave and piezo actuator 11 is protected provided with general metal.
Embodiment 2
As shown in figures 3 and 4, the present embodiment includes piezo actuator 11 and the stator 12 of combining structure；Described combination
The stator 12 of structure is made up of stator case 121 and iron core 122, is rigidly connected between housing 121 and stator core 122, stator
It is provided with pull box 13 and left and right footing 14a and 14b.
Piezo actuator 1 is strip or tile-shaped, axially or/and circumferentially segmented is laid on housing 121 and stator iron
Between core 122, so as to form a kind of stator structure that progress active control can be vibrated to motor stator.
Piezo actuator 11 can be piezopolymer (PVDF), be repaved in the outside of piezo actuator 11 provided with general
Plastics nonmetallic materials to piezo actuator 11 to protect.
Other structures outside for motor stator, the structure of motor 1 of specific implementation is as shown in accompanying drawing 7 and Fig. 8, including motor
Rotor 16, the motor stator 12 with piezo actuator 1, front and rear cover 15a and 15b, front and back bearings 17a and 17b and left and right base
Pin 14a and 14b.Rotor 16 is fixed on front and rear cover 15a and 16b by front and back bearings 17a and 17b, front and rear cover
15a and 15b is fixed on the both ends of the motor stator 12 with piezo actuator, and the motor stator 12 with piezo actuator passes through
Lower margin 14a and 14b are fixed on pedestal for left and right.
As shown in Figure 9, vibrating sensor 2 is set on motor 1, and motor 1 is externally provided with vibrating controller 3 and power amplification
Device 4.Vibrating sensor 2 be fixed on motor stator 12 outer surface and/or left and right lower margin 14a and 14b it is upper, and with vibration control
Device 3 processed is connected；Vibrating controller 3 is connected with power amplifier 4；Power amplifier 4 and the piezoelectricity being arranged on stator 12 perform
Several joints of device 11 are connected.
For the connected mode of piezo actuator on motor stator 11, illustrate as shown in accompanying drawing 5 and Fig. 6：
As shown in figure 5, the both threads of each piezo actuator are formed 2n by the piezo actuator 11 on motor stator respectively
Individual joint a1+b1, a2+b3 ... an+bn, then power amplifier is each individually connected to, wherein n is of piezo actuator
Number.
As shown in fig. 6, using the piezo actuator progress that several first are had into identical function in parallel or in series, formed
2k joint a1+b1, a2+b3 ... am+bm, wherein m are the number of piezo actuator branch road in parallel or in series.It is therein simultaneously
Connection or series connection may each be adjacent or jump.
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.
Vibration on the measurement motor stator 12 of vibrating sensor 2 and/or left and right lower margin 14a, 14b, and signal is transferred to
Vibrating controller 3；Vibrating controller 3 passes through the power amplification of power amplifier 4 according to the distribution and connection of piezo actuator
Piezo actuator vibration is driven, is held using the piezoelectricity being laid between the surface of motor stator 12 or housing 121 and stator core 122
Row device 11 changes the dynamic characteristics of motor stator, and the purpose of active control is carried out with the vibration reached to motor stator 12.
Claims (5)
- A kind of 1. stator structure being controlled by piezoelectric element to motor stator vibration, it is characterised in that：Spread including fixed Piezo actuator (11), vibrating sensor (2), vibrating controller (3) and the power amplifier being located on motor stator surface (4), vibrating sensor (2) is fixed on the surface and/or lower margin of motor stator, vibrating sensor (2) and vibrating controller (3) Connection, vibrating controller (3) are connected through power amplifier (4) with piezo actuator (11).
- 2. a kind of stator structure being controlled by piezoelectric element to motor stator vibration according to claim 1, its It is characterised by：Described piezo actuator (11) is fixed on inner surface or/and the outer surface of motor stator.
- 3. a kind of stator structure being controlled by piezoelectric element to motor stator vibration according to claim 1, its It is characterised by：Each piezo actuator (11) axially, circumferentially or with axis into the direction of unspecified angle is laid along motor.
- 4. a kind of stator structure being controlled by piezoelectric element to motor stator vibration according to claim 1, its It is characterised by：When multiple piezo actuators (11) are connected with power amplifier (4), using independent mode, series system, simultaneously One or several kinds of combinations in connection mode or series-parallel system are attached.
- 5. a kind of stator structure being controlled by piezoelectric element to motor stator vibration according to claim 1, its It is characterised by：The shape of described piezo actuator (11) is for rectangle, tile shape or annular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720541556.0U CN206807207U (en) | 2017-05-16 | 2017-05-16 | A kind of stator structure being controlled by piezoelectric element to motor stator vibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720541556.0U CN206807207U (en) | 2017-05-16 | 2017-05-16 | A kind of stator structure being controlled by piezoelectric element to motor stator vibration |
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| Publication Number | Publication Date |
|---|---|
| CN206807207U true CN206807207U (en) | 2017-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720541556.0U Active CN206807207U (en) | 2017-05-16 | 2017-05-16 | A kind of stator structure being controlled by piezoelectric element to motor stator vibration |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108429406A (en) * | 2018-02-24 | 2018-08-21 | 南方电网调峰调频发电有限公司 | A method of analysis stator core abnormal vibrations are monitored by air gap |
| US20230063657A1 (en) * | 2018-06-08 | 2023-03-02 | Rmg Networks Holding Corporation | Scriptlets |
-
2017
- 2017-05-16 CN CN201720541556.0U patent/CN206807207U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108429406A (en) * | 2018-02-24 | 2018-08-21 | 南方电网调峰调频发电有限公司 | A method of analysis stator core abnormal vibrations are monitored by air gap |
| US20230063657A1 (en) * | 2018-06-08 | 2023-03-02 | Rmg Networks Holding Corporation | Scriptlets |
| US12045557B2 (en) * | 2018-06-08 | 2024-07-23 | Rmg Networks Holding Corporation | Scriptlets |
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