CN107332460A - A kind of SMD ring-like ultrasound electric machine oscillator of high performance piezoelectric monocrystalline - Google Patents
A kind of SMD ring-like ultrasound electric machine oscillator of high performance piezoelectric monocrystalline Download PDFInfo
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- CN107332460A CN107332460A CN201710108993.8A CN201710108993A CN107332460A CN 107332460 A CN107332460 A CN 107332460A CN 201710108993 A CN201710108993 A CN 201710108993A CN 107332460 A CN107332460 A CN 107332460A
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- ring
- piezoelectric monocrystal
- electric machine
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- 238000002604 ultrasonography Methods 0.000 title claims abstract description 35
- 239000000463 material Substances 0.000 claims description 9
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 description 7
- 239000013078 crystal Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007850 degeneration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/10—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors
- H02N2/12—Constructional details
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- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The present invention discloses a kind of SMD ring-like ultrasound electric machine oscillator of high performance piezoelectric monocrystalline, including the fan-shaped piezoelectric monocrystal sheet of multi-disc, each fan-shaped piezoelectric monocrystal sheet surrounds annular, each piezoelectric monocrystal sheet polarizes along its thickness direction, two adjacent piezoelectric monocrystal sheet polarised directions are opposite, the use solved under the ring-like ultrasound electric machine low temperature environment of existing piezoelectric ceramics is limited, monocrystalline ring for the ring-like ultrasonic motor stator of large scale is difficult to process, the problems such as monocrystalline anisotropic influence, compared with the ring-like ultrasound electric machine of ring plate formula piezoelectric monocrystal, SMD high performance piezoelectric monocrystalline ring-shaped ultrasonic motor performance has been lifted, power density increases, output torque increases, and processing and assembling is easy, compact conformation.
Description
【Technical field】
The invention belongs to Ultrasonic Motor Techniques field, it is related to a kind of SMD ring-like ultrasound electric machine of high performance piezoelectric monocrystalline and uses
Oscillator.
【Background technology】
Ultrasound electric machine is as a kind of new motor, compared with traditional electromagnetic machine, ultrasound electric machine without magnetic pole with around
Group, energy is transmitted not against electromagnetic field, but utilizes the inverse piezoelectric effect of piezoelectric, the excitation ultrasound frequency in metallic elastic body
Vibration in section, and then by amplification and the friction coupling between stator and rotor of resonating, by the microcosmic of piezoelectric
Deformation changes into the macro-mechanical motion of rotor.Ultrasound electric machine has not by electromagnetic interference, and low speed high torque, dynamic response is fast,
It is simple in construction, the advantages of cutting off self-lock.
Due to the serious degeneration of piezoelectric ceramics piezoelectric property at low ambient temperatures, existing ring plate formula piezoelectric ceramics is ring-like super
Acoustic-electric machine is at low ambient temperatures using being restricted；It is difficult to add in the presence of the monocrystalline ring for the ring-like ultrasonic motor stator of large scale
The problem of work, monocrystalline anisotropy influence.
【The content of the invention】
Present invention aims to overcome that there is provided a kind of SMD ring of high performance piezoelectric monocrystalline for the deficiency of prior art
Type ultrasound electric machine oscillator, the use solved under the ring-like ultrasound electric machine low temperature environment of existing piezoelectric ceramics is limited, for big chi
The problems such as monocrystalline ring of very little ring-like ultrasonic motor stator is difficult to process, monocrystalline anisotropy influences.
To reach above-mentioned purpose, patent of the present invention, which is adopted the following technical scheme that, to be achieved：
A kind of SMD ring-like ultrasound electric machine oscillator of high performance piezoelectric monocrystalline, including the fan-shaped piezoelectric monocrystal sheet of multi-disc,
Each fan-shaped piezoelectric monocrystal sheet surrounds annular, and each piezoelectric monocrystal sheet is along same circumference, multi-disc piezoelectric monocrystal sheet it is upper
Surface and lower surface are coated with electrode respectively, the upper surface of each piezoelectric monocrystal sheet is in the same plane, lower surface be located at it is same flat
On face, each piezoelectric monocrystal sheet polarizes along its thickness direction, and each piezoelectric monocrystal sheet is divided into A areas, B areas and Zone R, A areas and B areas respectively
Piezoelectric monocrystal sheet width is λ/2, and Zone R piezoelectric monocrystal sheet width is λ/4, and wherein λ is traveling wave wavelength, adjacent two in A areas and B areas
Individual piezoelectric monocrystal sheet polarised direction is on the contrary, the piezoelectric monocrystal sheet polarised direction of Zone R and two piezoelectricity lists in adjacent A areas and B areas
Chip polarised direction is opposite.
Further, the multi-disc piezoelectric monocrystal sheet upper and lower surface is gold electrode or silver electrode.
Further, the multi-disc piezoelectric monocrystal sheet is that piezoelectric property is consistent, single-chip machine direction is consistent, material homogeneity
Consistent and thickness direction is the monocrystalline in [001] direction.
Further, the multi-disc piezoelectric monocrystal sheet is high performance piezoelectric monocrystal material.
Further, the high performance piezoelectric monocrystal material is lead niobate lead indate-lead-PMN-PT or lead magnesio-niobate-titanium
One kind in lead plumbate.
Further, including 17 fan-shaped piezoelectric monocrystal sheets, A areas and B areas respectively include 8 piezoelectric monocrystal sheets, and width is
Width is λ/2, and Zone R includes 1, and width is λ/4.
There is advantages below in the present invention：
1), ultrasound electric machine of the invention surrounds annular composition with oscillator using the fan-shaped piezoelectric monocrystal sheet of multi-disc so that super
Acoustic-electric machine stator rigidity reduces, so as to reduce stator resonant frequency, reduces the mechanical loss and piezoelectric monocrystal of motor stator
Mechanical loss.
2), because there is composition segregation phenomenon in high performance piezoelectric single crystal growth process, oscillator of the invention is fanned using multi-disc
The piezoelectric monocrystal sheet of shape surrounds annular composition, can adjust position according to multiple monolithic piezoelectric single-chip properties, eliminate
Influence of the monocrystal material homogeneity of ingredients to ultrasound electric machine performance.In engineer applied, in ultrasound electric machine work, if some is special
Fixed single-chip fracture, can change the specific single-chip.The processing technology of large size single crystal ring is also immature at present, independent small
The processing of size single crystal piece is more convenient.
3), ultrasound electric machine oscillator of the invention encloses composition using piezoelectric monocrystal sheet so that under the particular surroundings such as low temperature,
The performance of ultrasound electric machine is stable, and improves the power density of ultrasound electric machine.
4), the SMD ring-like ultrasound electric machine oscillator of high performance piezoelectric monocrystalline causes ultrasonic motor stator in the position of Z-direction
Increase is moved, in the case of same friction, frictional force increase, the output torque of ultrasound electric machine also increases.
【Brief description of the drawings】
Fig. 1 is a kind of high performance piezoelectric monocrystalline SMD ring-like ultrasound electric machine oscillator point described in embodiment 1
Cloth schematic diagram
Fig. 2 is the SMD ring-like ultrasonic motor stator signal of a kind of high performance piezoelectric monocrystalline described in embodiment 2
Figure
Fig. 3 is the schematic diagram that high performance piezoelectric monocrystalline ring plate formula ring-shaped ultrasonic motor works
Fig. 4 is the Mode Shape figure of the SMD ring-like ultrasonic motor stator vibration of high performance piezoelectric monocrystalline
Fig. 5 is the Harmony response figure of the SMD ring-like ultrasonic motor stator vibration of high performance piezoelectric monocrystalline
【Embodiment】
The application particular content is described in detail below in conjunction with the drawings and specific embodiments.
As shown in figure 1, the SMD ring-like ultrasound electric machine oscillator of high performance piezoelectric monocrystalline of the present invention, including multi-disc are fan-shaped
Piezoelectric monocrystal sheet, each fan-shaped piezoelectric monocrystal sheet surrounds annular, and each piezoelectric monocrystal sheet is along same circumference, multi-disc pressure
The upper and lower surface of electric single-chip is coated with electrode respectively, and the upper surface of each piezoelectric monocrystal sheet is in the same plane, following table
Face is in the same plane, and each piezoelectric monocrystal sheet polarizes along its thickness direction, and each piezoelectric monocrystal sheet is divided into A areas, B areas and Zone R,
Each piezoelectric monocrystal sheet width is λ/2 in A areas and B areas, and Zone R piezoelectric monocrystal sheet width is λ/4, and wherein λ is traveling wave wavelength, A areas and B
Two adjacent piezoelectric monocrystal sheet polarised directions in area are on the contrary, the piezoelectric monocrystal sheet polarised direction of Zone R and adjacent A areas and B areas
Two piezoelectric monocrystal sheet polarised directions it is opposite.
The multi-disc piezoelectric monocrystal sheet upper and lower surface is gold electrode.Multi-disc piezoelectric monocrystal sheet is that piezoelectric property is consistent, monocrystalline
Piece machine direction is consistent, material homogeneity is consistent and thickness direction be [001] direction monocrystalline.Multi-disc piezoelectric monocrystal sheet is iron
Electric monocrystal material, specially lead niobate lead indate-lead-PMN-PT (PIN-PMN-PT) or PMN-PT (PMN-
PT one kind in).
The SMD ring-like ultrasound electric machine oscillator of high performance piezoelectric monocrystalline of the present invention, solves existing piezoelectricity from principle
Use under the ring-like ultrasound electric machine low temperature environment of ceramics is limited, monocrystalline ring for the ring-like ultrasonic motor stator of large scale is difficult to plus
The problems such as work, monocrystalline anisotropic influence.Compared with the ring-like ultrasound electric machine of ring plate formula piezoelectric monocrystal, SMD high-performance pressure
Electric monocrystalline ring-shaped ultrasonic motor performance has been lifted, power density increase, output torque increase, and processing and assembling letter
Just, compact conformation.
Illustrate present invention below by way of specific embodiment：
As shown in figure 1, ultrasound electric machine oscillator includes 17 piezoelectric monocrystal sheets, single-chip A1, A2, A3,, A8 be A
Area, single-chip B1, B2, B3,, B8 be B areas, single-chip R be Zone R, wherein single-chip A1, single-chip A3, single-chip A5, monocrystalline
Piece A7, single-chip R, single-chip B1, single-chip B3, single-chip B5 are identical with single-chip B7 polarised direction, single-chip A2, monocrystalline
Piece A4, single-chip A6, single-chip A8, single-chip B2, single-chip B4, single-chip B6 are identical with single-chip B8 polarised direction, and
And with single-chip A1, single-chip A3, single-chip A5, single-chip A7, single-chip R, single-chip B1, single-chip B3, single-chip B5 and
Single-chip B7 polarised direction is opposite；Single-chip R and two single-chip A8, B8 polarised direction phases in A areas adjacent thereto and B areas
Instead.
As shown in Fig. 2 Fig. 1 oscillator 1 is fixed on the lower surface composition ultrasonic motor stator of metallic elastic body 2, metal elastic
Property body connect power supply common port, single-chip A1, single-chip A2, single-chip A3, single-chip A4, single-chip A5, single-chip A6, list
Chip A7 and single-chip A8 outer surface connects a phase drive signal, single-chip B1, single-chip B2, single-chip B3, single-chip B4,
Single-chip B5, single-chip B6, single-chip B7 and single-chip B8 outer surface connect another phase drive signal, and single-chip R is feedback
Pole.
As shown in figure 3, stator and the composition composition ultrasound electric machine of rotor 3.As shown in figure 4, ultrasound electric machine is operationally, use
Frequency is that the corresponding resonant frequency of certain modality-specific, the two-phase alternating current that amplitude is equal, phase difference is 90 ° are pressed into row energization,
So as to be inspired in track ring, amplitude is identical, and differs 90 ° of two row standing waves, the superposition of this two row standing wave over time and space
Cheng Yilie traveling waves.And when the phase difference of two-phase driving voltage is -90 °, then the direction of advance of traveling wave is also reverse, i.e., rotor is anti-
To rotation.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements done etc. should be included within the scope of the present invention.
Claims (6)
1. a kind of SMD ring-like ultrasound electric machine oscillator of high performance piezoelectric monocrystalline, it is characterised in that：Including the fan-shaped pressure of multi-disc
Electric single-chip, each fan-shaped piezoelectric monocrystal sheet surrounds annular, and each piezoelectric monocrystal sheet is along same circumference, multi-disc piezoelectricity list
The upper and lower surface of chip is coated with electrode respectively, and the upper surface of each piezoelectric monocrystal sheet is in the same plane, lower surface position
In on same plane, each piezoelectric monocrystal sheet polarizes along its thickness direction, and each piezoelectric monocrystal sheet is divided into A areas, B areas and Zone R, A areas
It is λ/2 with each piezoelectric monocrystal sheet width in B areas, Zone R piezoelectric monocrystal sheet width is λ/4, and wherein λ is traveling wave wavelength, A areas and B areas
In adjacent two piezoelectric monocrystal sheet polarised directions on the contrary, the piezoelectric monocrystal sheet polarised direction of Zone R and adjacent A areas and B areas
Two piezoelectric monocrystal sheet polarised directions are opposite.
2. the SMD ring-like ultrasound electric machine oscillator of high performance piezoelectric monocrystalline according to claim 1, it is characterised in that：Institute
Multi-disc piezoelectric monocrystal sheet upper and lower surface is stated for gold electrode.
3. the SMD ring-like ultrasound electric machine oscillator of high performance piezoelectric monocrystalline according to claim 1, it is characterised in that：Institute
Multi-disc piezoelectric monocrystal sheet is stated for piezoelectric property is consistent, single-chip machine direction is consistent, material homogeneity is consistent and thickness direction is equal
For the monocrystalline in [001] direction.
4. the SMD ring-like ultrasound electric machine oscillator of high performance piezoelectric monocrystalline according to claim 1,2 or 3, its feature exists
In：The multi-disc piezoelectric monocrystal sheet is high performance piezoelectric monocrystal material.
5. the SMD ring-like ultrasound electric machine oscillator of high performance piezoelectric monocrystalline according to claim 4, it is characterised in that：Institute
It is one kind in lead niobate lead indate-lead-PMN-PT or PMN-PT to state high performance piezoelectric monocrystal material.
6. the SMD ring-like ultrasound electric machine oscillator of high performance piezoelectric monocrystalline according to claim 4, it is characterised in that：Bag
17 fan-shaped piezoelectric monocrystal sheets are included, A areas and B areas respectively include 8 piezoelectric monocrystal sheets, and width is that width is λ/2, and Zone R includes 1
Piece, width is λ/4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710108993.8A CN107332460B (en) | 2017-02-27 | 2017-02-27 | A kind of ring-like ultrasound electric machine oscillator of high performance piezoelectric monocrystalline patch type |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710108993.8A CN107332460B (en) | 2017-02-27 | 2017-02-27 | A kind of ring-like ultrasound electric machine oscillator of high performance piezoelectric monocrystalline patch type |
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| CN107332460B CN107332460B (en) | 2019-05-24 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110601590A (en) * | 2019-11-05 | 2019-12-20 | 山东理工大学 | Paster type standing wave type double-sided tooth ultrasonic motor stator |
| CN111463344A (en) * | 2019-01-22 | 2020-07-28 | 中国科学院上海硅酸盐研究所 | Preparation method of piezoelectric single crystal element |
| CN112260576A (en) * | 2020-10-30 | 2021-01-22 | 西安科技大学 | Single crystal splicing method for annular ultrasonic motor |
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2017
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111463344A (en) * | 2019-01-22 | 2020-07-28 | 中国科学院上海硅酸盐研究所 | Preparation method of piezoelectric single crystal element |
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| CN112260576A (en) * | 2020-10-30 | 2021-01-22 | 西安科技大学 | Single crystal splicing method for annular ultrasonic motor |
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| CN107332460B (en) | 2019-05-24 |
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