CN102005967B - Single drive micro piezoelectric motor for controlling steering with frequency - Google Patents
Single drive micro piezoelectric motor for controlling steering with frequency Download PDFInfo
- Publication number
- CN102005967B CN102005967B CN201010577392XA CN201010577392A CN102005967B CN 102005967 B CN102005967 B CN 102005967B CN 201010577392X A CN201010577392X A CN 201010577392XA CN 201010577392 A CN201010577392 A CN 201010577392A CN 102005967 B CN102005967 B CN 102005967B
- Authority
- CN
- China
- Prior art keywords
- driving body
- drives
- piezoelectric motor
- stator
- turns
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The invention discloses a single drive micro piezoelectric motor for controlling steering with frequency, comprising a stator and a rotor which can rotate relative to the stator; the stator comprises a driving body, a piezoelectric sheet and a matching sheet, wherein the driving body is provided with a center hole, the piezoelectric sheet and the matching sheet are respectively adhered to two adjacent side planes of the driving body, and at least one of shapes and materials of the piezoelectric sheet and the matching sheet is different; the rotor comprises a rotating body and a cap body, the rotating body penetrates through the center hole of the driving body, and the cap body is fixedly connected with one end of the rotating body; and the cap body is in contact with the driving body, and a gap is available between the rotating body and the hole wall of the center hole of the driving body. The piezoelectric motor has small size and is easy for controlling forward rotation and inversion and plays the important role in miniaturization of a piezoelectric motor system.
Description
Technical field
The present invention relates to the piezo-electric motor field, be specifically related to single micro piezoelectric motor that drives that a kind of FREQUENCY CONTROL turns to.
Background technology
Supersonic motor (Ultrasonic Motor) is called for short USM, is that a kind of inverse piezoelectric effect of utilizing realizes the motor of electric energy to the mechanical energy conversion; Generally by stator; Parts such as rotor constitute, and operation principle is: through the inverse piezoelectric effect of piezoelectric, make to produce elliptic motion with the contacted stator surface particle of rotor; Thereby cause between stator surface particle and the rotor relative motion being arranged; By means of the frictional force of rotor surface, make to produce unidirectional sliding friction between stator, the rotor, finally drive rotor motion.Seeing that the mechanical oscillation of stator are to be produced according to inverse piezoelectric effect by piezoelectric, so ultrasonic motor has another name called piezo-electric motor.
Piezo-electric motor has characteristics such as high displacement resolution, big moment and the slow-speed of revolution, is a kind of high rigidity, high response speed, high-precision driver that can directly drive load.The parts that contain piezo-electric motor can constitute the drive system of high confining force, low noise, realize miniaturization and intellectuality easily.So piezo-electric motor is boundless in the application prospect in fields such as precision optical machinery, measuring instrument, transmission system.
Piezo-electric motor is in order to realize that two-way controlling and driving is the rotating of piezo-electric motor; Often need two cover piezoelectric patches; One cover piezoelectric patches adds sin θ signal; An other cover piezoelectric patches adds cos θ signal, and the driving voltage of two cover piezoelectric patches forms 90 degree voltage phase differences in time, and the phase difference on the matching design space can be realized the rotation of rotor; If the voltage phase difference that will drive originally on the two cover piezoelectric patches changes-90 degree into (as sin θ signal is become cos θ signal; Cos θ signal becomes sin θ signal); The direction of rotation of rotor will change so, thereby realize the two-way controlling and driving of piezo-electric motor.
Because traditional piezo-electric motor will use two cover piezoelectric patches to control rotating, every cover piezoelectric patches all needs a drives, so that the volume of piezo-electric motor system can become is huge, has limited its application in the precision optical machinery field.Along with the progress of the microminiaturized miniaturization of piezo-electric motor, also increasingly high to the requirement that the piezo-electric motor system dimension reduces.If only can be reduced to a piezoelectric patches and a drive system, the size of piezo-electric motor system will reduce greatly so.
Summary of the invention
The invention provides single micro piezoelectric motor that drives that a kind of volume is little and the control of power drives simple frequency turns to.
Single driving micro piezoelectric motor that a kind of FREQUENCY CONTROL turns to, but comprise stator and relative stator rotor rotated; Piezoelectric patches and coupling sheet that described stator comprises the driving body of being with centre bore and is bonded in two adjacent side planes of driving body respectively, described piezoelectric patches has at least a kind of different with shape, the material of coupling sheet; Described rotor comprises the rotary body of the centre bore that runs through driving body and the cap body that is fixedly connected with rotary body one end; Described cap body contacts with described driving body, between the centre bore hole wall of described rotary body and described driving body the space is arranged.
Invent effect better in order to reach, preferred:
Described driving body is the mirror image symmetry along the middle axial plane of piezoelectric patches, is beneficial to mate the design of sheet.In order to guarantee that piezo-electric motor has mirror symmetry preferably; Described driving body further is preferably column; Can be in the class cylinder, the triangular column that have two side planes, square column, the polygon post etc. a kind of, most preferably have the class cylinder or the square column of two side planes.Described column driving body further preferably axially is provided with centre bore along driving body.
The angle of described piezoelectric patches and coupling sheet is preferably 90 degree, is more conducive to control motor through the frequency of voltage and turns to.
Described piezoelectric patches adopts the general patch of piezoelectric material in this area, as selecting piezoelectric ceramic piece etc. for use.
The material of described driving body is a metal, like metals such as copper, steel.
The material of described rotor is a metal, like metals such as copper, steel.
But the material aluminium of described coupling sheet etc.
The other end of described rotary body is provided with elastic mechanism, is used to make the cap body of rotor more closely to contact with the driving body of stator.The composite elastic mechanism that described elastic mechanism can be selected elastic card for use or be made up of spring and pad.
Piezo-electric motor of the present invention has particular structural: two adjacent side planes are bonded with the driving body of piezoelectric patches and coupling sheet respectively; Can only utilize an AC driving signal that the voltage sheet is applied voltage, control the positive and negative two-way rotation of piezo-electric motor through the frequency that changes the stream drive signal.The piezo-electric motor manufacture craft of this structure is simplified greatly, has reduced the demand to power module, and from the control angle, it is simple more and efficient that the control of rotating becomes.
The operation principle of piezo-electric motor of the present invention is: the sin signal that on piezoelectric patches, applies the alternating voltage of lower frequency; Through the inverse piezoelectric effect of piezoelectric patches, make to produce elliptic motion, thereby cause between stator surface particle and the rotor relative motion being arranged with the contacted stator surface particle of rotor; Frictional force by means of rotor surface; Make to produce unidirectional sliding friction between stator, the rotor, finally drive the rotor relative stator and rotate, this rotation is assumed to be and turns clockwise; The frequency of the sin signal of alternating voltage is heightened, based on the inverse piezoelectric effect of piezoelectric patches, finally driven rotor relative stator backward rotation, this rotation is then for being rotated counterclockwise.Piezoelectric patches plays mutual destruction the other side single order with the coupling sheet and swings symmetric effect; Thereby make and just very easily forming or anti-curl with the contacted stator surface of rotor; Coupling sheet and piezoelectric patches different then brought up two kinds of different single orders and swung resonance frequencys; So through driving the different of piezoelectric patches frequency, i.e. may command positive and reverse steering.
Compared with prior art, the present invention has following advantage:
Piezo-electric motor of the present invention adopts two adjacent side planes to be bonded with the driving body of piezoelectric patches and coupling sheet respectively, only uses the AC driving signal of a changeable frequencyization can realize the positive and negative two-way rotation of piezo-electric motor.
Piezoelectric motor configuration of the present invention is simple; Can be designed to the motor that diameter is 0.5～50mm, power drives is simple, has reduced the demand of piezo-electric motor to power module greatly; Thereby reduced the volume of piezo-electric motor system greatly, important effect is played in microminiaturization for the piezo-electric motor system.From the control angle, make the control of piezo-electric motor rotating become simple more and efficient.
Description of drawings
Fig. 1 is a kind of structural representation of piezo-electric motor of the present invention;
Fig. 2 is the structural representation of stator among Fig. 1;
Fig. 3 is the plan structure sketch map of stator among Fig. 2;
Fig. 4 is the structural representation of Fig. 1 rotor;
Fig. 5 is a piezoelectric motor configuration schematic diagram of the present invention.
Embodiment
Like Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4; Single micro piezoelectric motor that drives that FREQUENCY CONTROL of the present invention turns to; But comprise stator and relative stator rotor rotated; Stator can be fixed through the pedestal 1 that is fixedly connected with stator through gripping also, and the centre bore 8 in the driving body 3 runs through pedestal 1; Stator comprises the driving body 3 of being with centre bore 8 and passes through the piezoelectric patches 2 and coupling sheet 9 of 502 glue at 3 two adjacent side planes of driving body respectively that the shape of piezoelectric patches 2 and coupling sheet 9 is identical but material different; Rotor comprises the rotary body 5 of the centre bore 8 that runs through driving body 3 and the cap body 4 that is fixedly connected with rotary body 5 one ends; Cap body 4 contacts with driving body 3, between the hole wall of the centre bore 8 of rotary body 5 and driving body 3 space is arranged.
The other end of rotary body 5 is equipped with elastic card 6, be used for rotor and stator are assembled together, and the cap body 4 that can provide a pretightning force to make rotor contacts well with the driving body 3 of stator.
Driving body 3 is the mirror image symmetry along the middle axial plane of piezoelectric patches; In order to guarantee that driving body 3 has mirror symmetry preferably; Driving body 3 can be column; Can be in the class cylinder, the triangular column that have two sides adjacent planes, square column, the polygon column etc. a kind of, two class cylinder or square columns that the sides adjacent plane included angle is 90 degree most preferably.Centre bore 8 is along the axial setting of column driving body.
As shown in Figure 5, be example with the driving body 3 of square column type, FREQUENCY CONTROL of the present invention turns to, and single operation principle that drives micro piezoelectric motor is following:
When the bottom of the driving body 3 of square column type fixedly the time, the single order resonance directions of the driving body 3 of square column type will have along X-direction with along two kinds of Y directions, and frequency is respectively fx and fy.If coupling sheet 9 is commaterials with piezoelectric patches 2, and when coupling sheet 9 has the 4 rank rotation symmetry of Z axle with piezoelectric patches 2 on the structure, fx=fy.When the material or the structure of slight modification coupling sheet, fx ≠ fy, at this moment; If piezoelectric patches 2 is driven, and driving frequency is when being fx, and the upper surface of the driving body 3 of square column type will produce clockwise curl; If piezoelectric patches 2 is driven, and driving frequency is when being fy, and the upper surface of the driving body 3 of square column type will produce counterclockwise curl; This curl will produce rotation and drive to the cap body that contacts with the upper surface of the driving body 3 of square column type, thereby will drive the rotor rotation.When the driving signal frequency of driving piezoelectric patches 2 was fx, rotor turned clockwise, and when the driving signal frequency of driving piezoelectric patches 2 was fy, rotor was rotated counterclockwise.
For example, piezoelectric patches 2 is applied the sin AC signal that voltage is about the about 18k of 25V frequency, piezo-electric motor is with turning clockwise; Piezoelectric patches 2 is applied the sin AC signal that voltage is about the about 20k of 25V frequency, and motor is with being rotated counterclockwise.
Claims (8)
1. single micro piezoelectric motor that drives of turning to of a FREQUENCY CONTROL; But comprise stator and relative stator rotor rotated; It is characterized in that; Piezoelectric patches and coupling sheet that described stator comprises the driving body of being with centre bore and is bonded in two adjacent side planes of driving body respectively, described piezoelectric patches has at least a kind of different with shape, the material of coupling sheet;
Described rotor comprises the rotary body of the centre bore that runs through driving body and the cap body that is fixedly connected with rotary body one end;
Described cap body contacts with described driving body, between the centre bore hole wall of described rotary body and described driving body the space is arranged;
Utilize an AC driving signal that piezoelectric patches is applied voltage, control the positive and negative two-way rotation of piezo-electric motor through the frequency that changes the stream drive signal.
2. single micro piezoelectric motor that drives that FREQUENCY CONTROL according to claim 1 turns to is characterized in that described driving body is the mirror image symmetry along the middle axial plane of piezoelectric patches.
3. single micro piezoelectric motor that drives that FREQUENCY CONTROL according to claim 2 turns to is characterized in that described driving body is a column.
4. single micro piezoelectric motor that drives that FREQUENCY CONTROL according to claim 3 turns to is characterized in that, described driving body is a kind of in the class cylinder that has two adjacent side planes, triangular column, the square column.
5. single micro piezoelectric motor that drives that FREQUENCY CONTROL according to claim 3 turns to is characterized in that described driving body axially is provided with centre bore along driving body.
6. single micro piezoelectric motor that drives that FREQUENCY CONTROL according to claim 1 turns to is characterized in that, the angle of described piezoelectric patches and coupling sheet is 90 degree.
7. single micro piezoelectric motor that drives that FREQUENCY CONTROL according to claim 1 turns to is characterized in that, the other end of described rotary body is provided with and is used to make the cap body of rotor and the tight elastic mechanism that contacts of driving body of stator.
8. single micro piezoelectric motor that drives that FREQUENCY CONTROL according to claim 7 turns to is characterized in that described elastic mechanism is elastic card or the composite elastic mechanism for being made up of spring and pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010577392XA CN102005967B (en) | 2010-12-07 | 2010-12-07 | Single drive micro piezoelectric motor for controlling steering with frequency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010577392XA CN102005967B (en) | 2010-12-07 | 2010-12-07 | Single drive micro piezoelectric motor for controlling steering with frequency |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102005967A CN102005967A (en) | 2011-04-06 |
| CN102005967B true CN102005967B (en) | 2012-08-15 |
Family
ID=43813096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010577392XA Expired - Fee Related CN102005967B (en) | 2010-12-07 | 2010-12-07 | Single drive micro piezoelectric motor for controlling steering with frequency |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102005967B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102857140B (en) * | 2012-01-11 | 2015-11-04 | 中国科学院宁波材料技术与工程研究所 | One singly drives bidirectional rotary ultra-magnetic telescopic motor transition |
| CN203313086U (en) * | 2012-09-21 | 2013-11-27 | 中国科学院宁波材料技术与工程研究所 | Frequency-control single-drive bidirectional-rod-type piezoelectric motor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1514535A (en) * | 2003-07-30 | 2004-07-21 | 哈尔滨工业大学 | Piezoelectric sheet sticked metal prop stator and micro ultra sonic motor using said stator |
| CN101030740A (en) * | 2006-12-29 | 2007-09-05 | 江苏大学 | Bending single-phase driven rotary ultrasonic motor |
| CN101860259A (en) * | 2010-05-21 | 2010-10-13 | 苏州科技学院 | Single-electrical signal-stimulated rotation ultrasonic motor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2615953B2 (en) * | 1988-12-22 | 1997-06-04 | 日本電気株式会社 | Ultrasonic motor and its driving method |
-
2010
- 2010-12-07 CN CN201010577392XA patent/CN102005967B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1514535A (en) * | 2003-07-30 | 2004-07-21 | 哈尔滨工业大学 | Piezoelectric sheet sticked metal prop stator and micro ultra sonic motor using said stator |
| CN101030740A (en) * | 2006-12-29 | 2007-09-05 | 江苏大学 | Bending single-phase driven rotary ultrasonic motor |
| CN101860259A (en) * | 2010-05-21 | 2010-10-13 | 苏州科技学院 | Single-electrical signal-stimulated rotation ultrasonic motor |
Non-Patent Citations (1)
| Title |
|---|
| JP平2-168870A 1990.06.28 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102005967A (en) | 2011-04-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1959511B1 (en) | A thread driven polyhedron ultrasonic motor | |
| Watson et al. | Piezoelectric ultrasonic micro/milli-scale actuators | |
| CN100428618C (en) | Composite ultrasonic micromotor with slotted metal square column piezoelectric sheet | |
| CN201075845Y (en) | Screwed cap type ultrasound electric machine | |
| CN102983778B (en) | Based on the electric rotating machine of giant magnetostrictive material | |
| CN106208804B (en) | A kind of electric excitation mode of high speed rotation ultrasound electric machine and its stator | |
| CN103023372A (en) | Single-phase-driven SMD (Surface-Mounted Device) longitudinal-torsional ultrasonic micromotor | |
| CN101656490A (en) | Longitudinal bending compound modal linear ultrasonic motor | |
| CN101710802B (en) | Traveling wave type ultrasonic motor of minitype column | |
| JP2007195389A (en) | Ultrasonic motor | |
| CN102355160B (en) | Longitudinal and bending composite mode sandwich two-foot ultrasonic linear motor oscillator with elastic support | |
| CN101563839B (en) | A linear driver | |
| CN102005967B (en) | Single drive micro piezoelectric motor for controlling steering with frequency | |
| CN101895231B (en) | Miniature two-degrees-of-freedom plane motion piezoelectric motor | |
| CN106100440B (en) | One kind being based on out-of-plane bending vibration mode high speed rotation ultrasound electric machine | |
| JP2009254190A (en) | Ultrasonic motor | |
| CN114123857A (en) | Hemispherical shell inertia type multi-degree-of-freedom piezoelectric actuator and working method thereof | |
| CN107834899B (en) | Method for adjusting two-phase modal frequency difference and steering of ultrasonic motor | |
| CN101364775B (en) | Flat dual-stator thread driving ultrasonic minimized motor having thread pair pretensioning | |
| CN102005966B (en) | Boundary condition-based single-drive two-way piezoelectric motor | |
| CN103036472B (en) | Screw-type linear ultrasonic motor | |
| CN103023373A (en) | Two-freedom-degree rotation-line motion micro ultrasonic motor | |
| Jin et al. | A novel traveling wave ultrasonic motor using a bar shaped transducer | |
| CN102013834A (en) | Electrode segmentation type single drive and two-way piezoelectric motor | |
| CN103746600A (en) | Paster bent vibration composite piezoelectric supersonic motor vibrator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120815 Termination date: 20141207 |
|
| EXPY | Termination of patent right or utility model |