CN106208804B - A kind of electric excitation mode of high speed rotation ultrasound electric machine and its stator - Google Patents
A kind of electric excitation mode of high speed rotation ultrasound electric machine and its stator Download PDFInfo
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- CN106208804B CN106208804B CN201610615815.XA CN201610615815A CN106208804B CN 106208804 B CN106208804 B CN 106208804B CN 201610615815 A CN201610615815 A CN 201610615815A CN 106208804 B CN106208804 B CN 106208804B
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- phase
- carbon fiber
- stator
- piezoelectric ceramics
- electric machine
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- 238000002604 ultrasonography Methods 0.000 title claims abstract description 24
- 230000005284 excitation Effects 0.000 title claims abstract description 9
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 28
- 239000004917 carbon fiber Substances 0.000 claims abstract description 28
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000000919 ceramic Substances 0.000 claims abstract description 27
- 230000033001 locomotion Effects 0.000 claims abstract description 18
- 230000010287 polarization Effects 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 13
- 239000007787 solid Substances 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 4
- 238000005452 bending Methods 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000010355 oscillation Effects 0.000 description 3
- 238000005086 pumping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 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
-
- 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
- H02N2/16—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors using travelling waves, i.e. Rayleigh surface waves
- H02N2/166—Motors with disc stator
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- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The present invention provides a kind of high speed rotation ultrasound electric machine and its electric excitation modes of stator, which is made of rosette and carbon fiber pipe, including rosette, carbon fiber pipe and piezoelectric ceramics.Four potsherds are used to excite the out-of-plane bending operation mode of the two spaces difference pi/2 of stator lower end surface；With the sinusoidal signal that two-way time phase difference is pi/2 while the two orthogonal operation modes are motivated, make to generate elliptic motion in the outer inclined-plane of carbon fiber pipe both ends, rubbed effect drive rotor movement.The ultrasound electric machine has the characteristics that structure is simple, revolving speed is high, does not need bearing and light weight.
Description
Technical field
The present invention relates to ultrasound electric machine field, the electric excitation side of specifically a kind of high speed rotation ultrasound electric machine and its stator
Formula.
Background technique
Ultrasound electric machine is vibrated using the inverse piezoelectric effect excitation ultrasound of piezoelectric ceramics, by the novel work of frictional force drives
Dynamic device, rotary-type ultrasound electric machine belong to one kind of ultrasound electric machine.Compared with traditional electromagnetic machine, ultrasound electric machine has big torque matter
Ratio, quick response, precision positioning and the advantages that without electromagnetic interference are measured, in biologic medical, precision actuation, optical device and aviation
The fields such as space flight are with a wide range of applications.Existing ultrasound electric machine patent discovery is retrieved, with small on micro air vehicle
The high revolving speed ultrasound electric machine of type is as the considerably less of actuator.
Summary of the invention
The present invention in order to solve problems in the prior art, provides the electric shock of a kind of high speed rotation ultrasound electric machine and its stator
Mode is encouraged, motor body is stablized with performance, and revolving speed is high, and structure is simple, and light-weight, the requirement to potsherd is more single, processing
The features such as required precision height and lower matching requirements, and help to improve the output revolving speed of motor.
High speed rotation ultrasound electric machine provided by the invention includes stator and rotor, it is characterised in that: the stator includes
Rosette and carbon fiber pipe across rosette center, rosette bottom are fixed with four piezoelectric ceramics, and first
Piezoelectric ceramics and third piece piezoelectric ceramics positive polarization area are in that two quadrants constitute A phases upward, second piezoelectric ceramics and
4th piezoelectricity Tao Fujihuaqu is in that two quadrants constitute B phase upward.A phase and all the way B phase external drive signal all the way
It is the sinusoidal signal of pi/2 for phase difference；The rotor includes solid shafting and the tapered table top for covering the top on solid shafting,
Solid shafting passes through carbon fiber pipe center and engages with the inclined-plane at carbon fiber pipe both ends.
It is further improved, the rosette outer circle is connected with metal ring by several banners, opens on metal ring
There are several through-holes.
It is further improved, the carbon fiber pipe both ends are provided with chamfering.
Be further improved, the part that the rotor top passes through carbon fiber pipe is cased with spring and snap ring, by spring and
Snap ring applies precompression to rotor.
The present invention also provides a kind of electric excitation modes of the stator of high speed rotation ultrasound electric machine, it is characterised in that including with
Lower step: first piezoelectric ceramics positive polarization area in diagonal position is in downward with third piece piezoelectric ceramics positive polarization area upward
Two quadrants are arranged to make up A phase, and second in diagonal position piece piezoelectric ceramics positive polarization area is pressed with the 4th upward
Electroceramics positive polarization area is in that two quadrants are arranged to make up B phase downward, passes to same frequency sinusoidal signal respectively to A phase and B phase,
Phase difference between A phase and B same frequency sinusoidal signal is pi/2, and two orthogonal operation modes of stator are fired simultaneously out, make
Round metal disk generates traveling wave locomotion, and the particle on end face has the motion profile of ellipse, and vibration is passed to carbon fiber
Pipe, and push the rotor rotation being pressed on carbon fiber pipe.
It is further improved, the positive and negative direction of the rotor rotation is determined by the phase difference of A, B two-phase sinusoidal signal, i.e. pi/2
Phase official post electric mover forward motion ,-pi/2 phase official post electric mover counter motion.
The beneficial effects of the invention are that:
1. the innovation of structure: structure is simple, reliable for operation, without electromagnetic interference；Piezoelectric ceramics concentrates near axle center,
Under high speed rotation use environment, centrifugal force is smaller, is not susceptible to destroy.
2. the innovation of ultrasound electric machine application background: miniature drone field can be directly applied to.
3. the innovation of operation mode: the round metal disk out-of-plane bending vibration excited by piezoelectric ceramics: through FEM calculation,
Its bending vibration modes is easy to excite the out-of-plane bending vibration of stator rosette, and the amplitude that harmonic response calculates is higher, helps to mention
The output revolving speed of high motor, peak value can achieve 5000rmin, and stabilized (steady-state) speed is in 3500rmin.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of stator；
Fig. 2 is electronics and rotor assembling schematic diagram；
Fig. 3 is overall structure of the present invention；
Fig. 4 does bending vibration schematic illustration in the face x-z for stator rosette；
Fig. 5 is that stator A phase mode of oscillation emulates schematic diagram；
Fig. 6 is that stator B phase mode of oscillation emulates schematic diagram.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings.
Overall structure of the present invention is as shown in figure 3, include stator and rotor, the stator is as shown in Figure 1, include round metal
Disk 2 and carbon fiber pipe 1 across 2 center of rosette, rosette bottom faces are fixed with four piezoelectric ceramics 8, in pair
First piezoelectric ceramics of Angle Position and third piece piezoelectric ceramics positive polarization area are in that two quadrants constitute A phase, place upward
It is upward in that two quadrants constitute B phase in second piezoelectric ceramics of diagonal position and the 4th piezoelectricity Tao Fujihuaqu,
A phase and B phase external drive signal is the sinusoidal signal that phase difference is pi/2 all the way all the way；The rotor and stator assembly such as Fig. 2
Shown, rotor includes solid shafting 6 and the tapered table top 7 for covering the top on solid shafting 6, and solid shafting 6 passes through in carbon fiber pipe 1
It is engaged with the inclined-plane at 1 both ends of carbon fiber pipe centre.
It is further improved, 2 outer circle of rosette is connected with metal ring 4, metal ring 4 by several banners 5
On be provided with several through-holes 3.
It is further improved, 1 both ends of carbon fiber pipe are provided with chamfering.
Be further improved, the part that the rotor top passes through carbon fiber pipe 1 is cased with spring and snap ring, by spring and
Snap ring applies precompression to rotor.
The present invention also provides a kind of electric excitation modes of the stator of high speed rotation ultrasound electric machine, comprising the following steps: place
In first piezoelectric ceramics positive polarization area of diagonal position be downward in upward two four points with third piece piezoelectric ceramics positive polarization area
One of circle best-fit constitute A phase, second piezoelectric ceramics positive polarization area in diagonal position upward with the 4th piezoelectric ceramics just
Polarized area is in that two quadrants are arranged to make up B phase downward, passes to same frequency sinusoidal signal, A phase and B phase respectively to A phase and B phase
It is pi/2 with the phase difference between frequency sinusoidal signal, two orthogonal operation modes of stator are fired simultaneously out (stator round metal
It is as shown in Figure 4 that disk in the face x-z does bending vibration principle), so that round metal disk is generated traveling wave locomotion, the particle on end face has ellipse
Round motion profile, and vibration is passed into carbon fiber pipe, and push the rotor rotation being pressed on carbon fiber pipe.
As shown in Figure 5 and Figure 6, coordinate system is established using rosette central point as shown in the figure as origin, when rosette exists
When doing bending vibration in the face x-z, the out-of-plane bending vibration model of rosette is defined as A pattern state at this time；It together should round metal
When disk does bending vibration in y-z plane, the out-of-plane bending vibration model of rosette is defined as Type B mode at this time；A pattern state and
Type B mode is two groups of orthogonal out-of-plane bending vibration mode of homotype.
When A phase applies pumping signalApply pumping signal when identical with BWhen, it can be same
When motivate the two orthogonal bending vibration modes in the face rosette x-z and y-z plane, since the two mode differ in space phase
Pi/2, therefore be that rosette end face generates elliptic motion after two bending vibration modes superpositions, mode of oscillation is transferred on carbon fiber pipe
Inclined-plane also generate elliptic motion, rubbed effect drive rotor rotation.
The positive and negative direction of rotor rotation determines by the phase difference of A, B two-phase sinusoidal signal, i.e. pi/2 phase official post motor
Sub- forward motion ,-pi/2 phase official post electric mover counter motion.
There are many concrete application approach of the present invention, the above is only a preferred embodiment of the present invention, it is noted that for
For those skilled in the art, without departing from the principle of the present invention, it can also make several improvements, this
A little improve also should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of high speed rotation ultrasound electric machine, including stator and rotor, it is characterised in that: the stator includes rosette
(2) and the carbon fiber pipe (1) across rosette (2) center, rosette bottom faces are fixed with four piezoelectric ceramics (8),
First piezoelectric ceramics and third piece piezoelectric ceramics positive polarization area in diagonal position are in that two quadrants constitute A upward
Phase, second piezoelectric ceramics and the 4th piezoelectricity Tao Fujihuaqu in diagonal position are in that two quadrants are constituted upward
B phase, all the way A phase and B phase external drive signal is the sinusoidal signal that phase difference is pi/2 all the way；The rotor includes solid shafting
(6) and the tapered table top (7) on the top on solid shafting (6) is covered, solid shafting (6) passes through carbon fiber pipe (1) center and carbon fiber
The inclined-plane engagement at dimension pipe (1) both ends.
2. high speed rotation ultrasound electric machine according to claim 1, it is characterised in that: rosette (2) outer circle is logical
It crosses several banners (5) to be connected with metal ring (4), several through-holes (3) is provided on metal ring (4).
3. high speed rotation ultrasound electric machine according to claim 1, it is characterised in that: open at described carbon fiber pipe (1) both ends
There is chamfering.
4. high speed rotation ultrasound electric machine according to claim 1, it is characterised in that: the rotor top passes through carbon fiber
The part of pipe (1) is cased with spring and snap ring, applies precompression to rotor by spring and snap ring.
5. a kind of electric excitation mode of the stator of high speed rotation ultrasound electric machine, it is characterised in that the following steps are included: in diagonal
First piezoelectric ceramics positive polarization area of position is in upward two quadrants with third piece piezoelectric ceramics positive polarization area downward
Be arranged to make up A phase, second in diagonal position piece piezoelectric ceramics positive polarization area upward with the 4th piezoelectric ceramics positive polarization area
It is arranged to make up B phase in two quadrants downward, passes to same frequency sinusoidal signal respectively to A phase and B phase, A phase and B same frequency are just
Phase difference between string signal is pi/2, and two orthogonal operation modes of stator are fired simultaneously out, generates round metal disk
Traveling wave locomotion, the particle on end face has the motion profile of ellipse, and vibration is passed to carbon fiber pipe, so that carbon fiber pipe
Also the movement of elliptical orbit is done, the particle on the medial slope of carbon fiber pipe both ends also has the motion profile of ellipse, generates ellipse
Justify traveling wave locomotion, contacted on the medial slope of carbon fiber pipe both ends with rotor, precompression is applied to rotor by spring and generates friction
Push rotor rotation of the dynamic pressure on carbon fiber pipe.
6. the electric excitation mode of the stator of high speed rotation ultrasound electric machine according to claim 5, it is characterised in that: described turn
The positive and negative direction of son rotation is determined that is, pi/2 phase official post electric mover forward direction is transported by the phase difference of A, B two-phase sinusoidal signal
Dynamic ,-pi/2 phase official post electric mover counter motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610615815.XA CN106208804B (en) | 2016-08-01 | 2016-08-01 | A kind of electric excitation mode of high speed rotation ultrasound electric machine and its stator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610615815.XA CN106208804B (en) | 2016-08-01 | 2016-08-01 | A kind of electric excitation mode of high speed rotation ultrasound electric machine and its stator |
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| Publication Number | Publication Date |
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| CN106208804A CN106208804A (en) | 2016-12-07 |
| CN106208804B true CN106208804B (en) | 2019-07-19 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106976558B (en) * | 2017-04-28 | 2023-06-23 | 南京航空航天大学 | Patch type piezoelectric driving four-rotor flying device and working method thereof |
| CN109667914B (en) * | 2019-01-23 | 2020-08-04 | 河南科技大学 | High-speed rotating mechanism with self-adaptive eccentric adjustment function |
| CN110450945A (en) * | 2019-02-28 | 2019-11-15 | 南京航空航天大学 | The four axis minute vehicles based on the curved compound sheet ultrasound electric machine of diameter |
| CN110492785A (en) * | 2019-08-09 | 2019-11-22 | 南京航空航天大学 | A kind of rotary-type ultrasound electric machine of rood beam and its control method |
| CN111245290B (en) * | 2020-01-20 | 2021-02-19 | 哈尔滨工业大学 | Single-degree-of-freedom piezoelectric turntable and excitation method thereof |
| CN113224972B (en) * | 2021-04-28 | 2022-06-17 | 南京航空航天大学 | Single-stator three-degree-of-freedom spherical ultrasonic motor and excitation method thereof |
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| CN1299181A (en) * | 2000-12-08 | 2001-06-13 | 南京航空航天大学 | Standing wave type self-correcting ultrasonic motor |
| CN2826820Y (en) * | 2005-08-23 | 2006-10-11 | 浙江大学 | Standing wave type ultrasonic motor |
| CN101123405A (en) * | 2007-09-07 | 2008-02-13 | 华南农业大学 | Rotary ultrasonic motor and its implementation method |
| CN101867316A (en) * | 2010-06-08 | 2010-10-20 | 浙江大学 | Conical surface floating rotor ultrasonic motor |
| CN101873080A (en) * | 2010-05-21 | 2010-10-27 | 浙江大学 | Traveling-wave ultrasonic motor |
| CN201656811U (en) * | 2009-11-12 | 2010-11-24 | 南京航空航天大学 | In-plane traveling wave rotary ultrasonic motor |
| CN104377988A (en) * | 2014-12-09 | 2015-02-25 | 河北大学 | Standing-wave type ultrasonic motor of two driving frequency |
| CN104410324A (en) * | 2014-11-27 | 2015-03-11 | 南京航空航天大学 | Micro rotary linear traveling wave piezoelectric motor |
-
2016
- 2016-08-01 CN CN201610615815.XA patent/CN106208804B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1299181A (en) * | 2000-12-08 | 2001-06-13 | 南京航空航天大学 | Standing wave type self-correcting ultrasonic motor |
| CN2826820Y (en) * | 2005-08-23 | 2006-10-11 | 浙江大学 | Standing wave type ultrasonic motor |
| CN101123405A (en) * | 2007-09-07 | 2008-02-13 | 华南农业大学 | Rotary ultrasonic motor and its implementation method |
| CN201656811U (en) * | 2009-11-12 | 2010-11-24 | 南京航空航天大学 | In-plane traveling wave rotary ultrasonic motor |
| CN101873080A (en) * | 2010-05-21 | 2010-10-27 | 浙江大学 | Traveling-wave ultrasonic motor |
| CN101867316A (en) * | 2010-06-08 | 2010-10-20 | 浙江大学 | Conical surface floating rotor ultrasonic motor |
| CN104410324A (en) * | 2014-11-27 | 2015-03-11 | 南京航空航天大学 | Micro rotary linear traveling wave piezoelectric motor |
| CN104377988A (en) * | 2014-12-09 | 2015-02-25 | 河北大学 | Standing-wave type ultrasonic motor of two driving frequency |
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| CN106208804A (en) | 2016-12-07 |
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