CN101860259B - Single-electrical signal-stimulated rotation ultrasonic motor - Google Patents
Single-electrical signal-stimulated rotation ultrasonic motor Download PDFInfo
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- CN101860259B CN101860259B CN 201010178689 CN201010178689A CN101860259B CN 101860259 B CN101860259 B CN 101860259B CN 201010178689 CN201010178689 CN 201010178689 CN 201010178689 A CN201010178689 A CN 201010178689A CN 101860259 B CN101860259 B CN 101860259B
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Abstract
The invention discloses a single-electrical signal-stimulated rotation ultrasonic motor which comprises a mandrel, a group of piezoelectric ceramic sheets, a window-shaped staggered mode converter, a friction disk, a bearing, a spring and a nut, wherein the piezoelectric ceramic sheets, the window-shaped staggered mode converter, the friction disk, the bearing, the spring and the nut are sequentially sleeved on the mandrel, the piezoelectric ceramic sheets are connected with electrode sheets, the mandrel, the piezoelectric ceramic sheets, the electrode sheets and the window-shaped staggered mode converter form the stator part of the ultrasonic motor, the friction disk and the bearing form the rotor part of the ultrasonic motor, and the spring and the nut form a positive-pressure pretightening force adjusting mechanism of the rotor and the stator parts of the ultrasonic motor. In the invention, a single-electrical signal-stimulated working mode is adopted, the elliptical orbit motion of stator end surface particles is realized by utilizing the longitudinal vibration mode of the group of piezoelectric ceramic sheets, a rotor is driven to rotate, and the ultrasonic motor has simple control-driven system, easy manufacture, easy miniaturization and integration, low cost, small control difficulty and broad application prospect.
Description
Technical field
The invention belongs to the ultrasound electric machine field, relate in particular to a kind of piezoelectric ultrasonic motor of single-electrical signal excitation.
Background technology
Ultrasonic motor (Ultrasonic Motor, USM), claim again ultrasound electric machine, it is the electric coupling apparatus of realizing electric energy-mechanical energy conversion by the inverse piezoelectric effect of piezoelectric, because of its have that volume is little, lightweight, noise is little, response is fast, without the advantage such as electromagnetic interference, environmental suitability be strong, obtained increasingly extensive application in technical fields such as medical treatment, Aero-Space, robot, MEMS.
Can be divided into traveling wave type ultrasonic motor and standing wave type ultrasound electric machine according to the Theory of Vibration ultrasound electric machine, great majority row ripple and standing-wave ultrasonic motor all are to adopt two groups of piezoelectric ceramic vibrators to excite stator to produce two mode of oscillations with certain phase difference, the synthetic elliptical orbit that produces of stator faces particle is moved, then by the frictional force drives rotor motion.This ultrasound electric machine is necessary for every group of oscillator and is equipped with a cover and drives ultrasonic-frequency power supply and will control phase difference between the two-way driving power, and cost is high, control is complicated, it is microminiaturized to be unfavorable for realizing.
Single-electrical signal excitation mode conversion hysteria ultrasound electric machine also is a kind of of ultrasound electric machine, and it is the excitation that utilizes one group of piezo ceramic element, and the MODAL TRANSFORMATION OF A device by special construction produces stator to have the complex vibration of two kinds of mode of oscillation components.If exist certain phase difference and frequency close between these two mode of oscillations, the end face particle of stator will produce the elliptical orbit vibration on stator and the rotor contact interface, thereby obtains motion and the moment of torsion of rotor by the friction between stator and the rotor.The ultrasound electric machine that utilizes the MODAL TRANSFORMATION OF A principle to make only needs one group of control circuit and driving power thereof, and control-driven system is simple, and manufacturing cost, control difficulty all can be reduced.
Yet the several types of existing bibliographical information based on MODAL TRANSFORMATION OF A type ultrasound electric machine, exist complex structure, make difficulty, to making the problems such as matching requirements are higher, cost is higher, these problems have restricted their application in industrial production.
Summary of the invention
For overcoming deficiency of the prior art, the object of the present invention is to provide a kind of novel single-electrical signal excitation mode conversion hysteria ultrasound electric machine.
In order to solve the problems of the technologies described above, realize above-mentioned purpose, technical scheme of the present invention is:
A kind of single-electrical signal-stimulated rotation ultrasonic motor, comprise axle and be set in successively one group of piezoelectric ceramic piece on the described axle, window shape dislocation MODAL TRANSFORMATION OF A device, frictional disk, bearing, spring and nut, be connected with electrode slice on the described piezoelectric ceramic piece, described axle, described piezoelectric ceramic piece, described electrode slice, described window shape dislocation MODAL TRANSFORMATION OF A device consists of the stationary part of described ultrasound electric machine, described frictional disk and described bearing consist of the rotor portion of ultrasound electric machine, and described spring and described nut consist of the rotor of described ultrasound electric machine and the malleation prefastening force adjustment mechanism of stationary part.
Further, described window shape dislocation MODAL TRANSFORMATION OF A device and described axle are passed through thread connection.
Further, described window shape dislocation MODAL TRANSFORMATION OF A device is grouped into by lower end barrel portion and upper end window shape dislocation, and wherein said window shape dislocation is divided into two ends have dislocation teeth groove at circumferencial direction cylinder.
Further, described axle is comprised of motor rear cover plate and central shaft, and described motor rear cover plate and described central shaft are integrated.
The present invention adopts single-electrical signal excitation working method, utilizes the longitudinal vibration mode of one group of piezoelectric ceramic to realize that the elliptical orbit of stator faces particle moves, and drives rotor.Adopt the ultrasound electric machine of this working mechanism and structure fabrication only to need one group of control circuit and driving power thereof, control-driven system is simple, and is easy to manufacture, and is easy to microminiaturization, integrated, and cost is low, the control difficulty is little, has a extensive future.
The present invention also has the following advantages:
1. adopt single group oscillator.
Owing to adopt single group oscillator, can realize adopting one tunnel control to drive signal and finish control to ultrasound electric machine, simplified the control circuit structure, the control difficulty is reduced, and realizes easily the integrated of control circuit, and then reduces the control circuit volume.Improve reliability, reduced the control circuit cost.
2. adopt MODAL TRANSFORMATION OF A type stator.
By the stator structure form of particular design, realize the motion of stator faces particle elliptical orbit.Simplified the overall structure of motor, easy to manufacture, manufacturing cost is reduced.Installation requirement is reduced, also be beneficial to the realization of microminiaturized target.
3. adopt the sandwich transducer structure.
Compare with other single excitation ultrasound electric machine, stator of the present invention adopts the sandwich transducer structure, has the large advantage of power capacity.
Description of drawings
The present invention is further detailed explanation below in conjunction with drawings and embodiments.
Fig. 1 is the assembly structure schematic diagram of single-electrical signal excitation ultrasound electric machine of the present invention;
Fig. 2 is the structural representation of window shape dislocation MODAL TRANSFORMATION OF A device in the single-electrical signal excitation ultrasound electric machine stator of the present invention.
Embodiment
As shown in Figure 1, single-electrical signal excitation ultrasound electric machine of the present invention, comprise axle 1 and be set in successively one group of piezoelectric ceramic piece 3 on the axle 1, window shape dislocation MODAL TRANSFORMATION OF A device 4, frictional disk 5, bearing 6, spring 8 and nut 7, be connected with electrode slice 2 and 9 on the piezoelectric ceramic piece 3, axle 1, piezoelectric ceramic piece 3, electrode slice 2 and 9, window shape dislocation MODAL TRANSFORMATION OF A device 4 consist of the stationary part of ultrasound electric machine, frictional disk 5 and bearing 6 consist of the rotor portion of ultrasound electric machines, and spring 8 and nut 7 consist of the rotor of ultrasound electric machines and the malleation prefastening force adjustment mechanism of stationary part.
Wherein, window shape dislocation MODAL TRANSFORMATION OF A device 4 is comprised of two parts: lower end barrel portion 10 and upper end window shape dislocation are divided, wherein window shape dislocation part can be regarded as two ends have dislocation teeth groove at circumferencial direction cylinder, wherein driving gear 13 and end-tooth 14 has realized MODAL TRANSFORMATION OF A to single vibration in circumferencial direction dislocation, make the stator faces particle produce the elliptical orbit motion, rotate thereby drive rotor.Axle 1 is comprised of motor rear cover plate 11 and central shaft 12, and motor rear cover plate 11 and central shaft 12 are integrated.
Ultrasound electric machine external diameter 10mm, length 35mm, used piezoelectric ceramic is PZT-8, is of a size of Ф 10 * Ф 5 * 2.Annular piezoelectric ceramic piece 3 is enclosed within on the axle 1, internal thread by the external screw thread on the axle 1 and window shape dislocation MODAL TRANSFORMATION OF A device 4, the back shroud of axle 1, piezoelectric ceramic piece 3, electrode slice 2,9 and window shape dislocation MODAL TRANSFORMATION OF A device 4 clamp and link together, after connecting by interference fit, frictional disk 5 and bearing 6 be set on the axle 1, can change the decrement of spring 8 by the position of adjusting nut 7 on axle, thereby the precompression of regulating electric machine pair-rotor motor stator, precompression is set as 10N, driving frequency is 93KHz, ultrasound electric machine is stable, and heat radiation is good.
Claims (4)
1. single-electrical signal-stimulated rotation ultrasonic motor, it is characterized in that: comprise axle and be set in successively one group of piezoelectric ceramic piece on the described axle, window shape dislocation MODAL TRANSFORMATION OF A device, frictional disk, bearing, spring and nut, be connected with electrode slice on the described piezoelectric ceramic piece, described axle, described piezoelectric ceramic piece, described electrode slice, described window shape dislocation MODAL TRANSFORMATION OF A device consists of the stationary part of described ultrasound electric machine, described frictional disk and described bearing consist of the rotor portion of ultrasound electric machine, and described spring and described nut consist of the rotor of described ultrasound electric machine and the malleation prefastening force adjustment mechanism of stationary part.
2. single-electrical signal-stimulated rotation ultrasonic motor according to claim 1 is characterized in that: described window shape dislocation MODAL TRANSFORMATION OF A device and described axle are passed through thread connection.
3. single-electrical signal-stimulated rotation ultrasonic motor according to claim 2, it is characterized in that: described window shape dislocation MODAL TRANSFORMATION OF A device is grouped into by lower end barrel portion and upper end window shape dislocation, and wherein said window shape dislocation is divided into two ends have dislocation teeth groove at circumferencial direction cylinder.
4. single-electrical signal-stimulated rotation ultrasonic motor according to claim 2, it is characterized in that: described axle is comprised of motor rear cover plate and central shaft, and described motor rear cover plate and described central shaft are integrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010178689 CN101860259B (en) | 2010-05-21 | 2010-05-21 | Single-electrical signal-stimulated rotation ultrasonic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010178689 CN101860259B (en) | 2010-05-21 | 2010-05-21 | Single-electrical signal-stimulated rotation ultrasonic motor |
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| Publication Number | Publication Date |
|---|---|
| CN101860259A CN101860259A (en) | 2010-10-13 |
| CN101860259B true CN101860259B (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010178689 Expired - Fee Related CN101860259B (en) | 2010-05-21 | 2010-05-21 | Single-electrical signal-stimulated rotation ultrasonic motor |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005967B (en) * | 2010-12-07 | 2012-08-15 | 中国科学院宁波材料技术与工程研究所 | Single drive micro piezoelectric motor for controlling steering with frequency |
| CN103208944B (en) * | 2013-05-08 | 2016-02-24 | 苏州科技学院 | A kind of single-electrical signal drives rotary ultrasonic motor |
| CN103199734B (en) * | 2013-05-08 | 2015-08-05 | 苏州科技学院 | A kind of single-electrical signal drives two-way rotary ultrasonic motor |
| CN103227584B (en) * | 2013-05-08 | 2016-03-23 | 苏州科技学院 | A kind of bi-directional drive linear ultrasonic motor |
| CN103199735B (en) * | 2013-05-08 | 2015-09-02 | 苏州科技学院 | A kind of bi-directional drive rotary ultrasonic motor |
| CN103414374B (en) * | 2013-08-26 | 2016-06-15 | 苏州科技学院 | Single-electrical signal drives two-way rotary ultrasonic motor |
| CN114779619B (en) * | 2022-03-30 | 2022-11-01 | 哈尔滨工业大学 | Self-feedback type piezoelectric drive control method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5115161A (en) * | 1989-12-04 | 1992-05-19 | Nec Corporation | Ultrasonic motor |
| CN1610238A (en) * | 2004-11-12 | 2005-04-27 | 南京航空航天大学 | Double-rotar column travelling-wave type single-phase drive ultrsound electric machine |
| CN1610239A (en) * | 2004-11-12 | 2005-04-27 | 南京航空航天大学 | Cylinder non-contact ultrasound electric machine |
| CN101388624A (en) * | 2008-07-07 | 2009-03-18 | 哈尔滨工业大学 | Longitudinal-shaking sandwich energy converter type collar plate shape dual rotor ultrasonic motor |
-
2010
- 2010-05-21 CN CN 201010178689 patent/CN101860259B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5115161A (en) * | 1989-12-04 | 1992-05-19 | Nec Corporation | Ultrasonic motor |
| CN1610238A (en) * | 2004-11-12 | 2005-04-27 | 南京航空航天大学 | Double-rotar column travelling-wave type single-phase drive ultrsound electric machine |
| CN1610239A (en) * | 2004-11-12 | 2005-04-27 | 南京航空航天大学 | Cylinder non-contact ultrasound electric machine |
| CN101388624A (en) * | 2008-07-07 | 2009-03-18 | 哈尔滨工业大学 | Longitudinal-shaking sandwich energy converter type collar plate shape dual rotor ultrasonic motor |
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| CN101860259A (en) | 2010-10-13 |
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Granted publication date: 20130102 Termination date: 20140521 |