JPS63294269A - Driving method for ultrasonic wave motor - Google Patents
Driving method for ultrasonic wave motorInfo
- Publication number
- JPS63294269A JPS63294269A JP62126635A JP12663587A JPS63294269A JP S63294269 A JPS63294269 A JP S63294269A JP 62126635 A JP62126635 A JP 62126635A JP 12663587 A JP12663587 A JP 12663587A JP S63294269 A JPS63294269 A JP S63294269A
- Authority
- JP
- Japan
- Prior art keywords
- elastic plate
- vibration
- oscillation
- standing
- excited
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 4
- 238000005452 bending Methods 0.000 claims abstract description 12
- 239000000919 ceramic Substances 0.000 abstract description 8
- 230000010355 oscillation Effects 0.000 abstract 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000000694 effects 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
- H02N2/02—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors
- H02N2/026—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors by pressing one or more vibrators against the driven body
-
- 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
- H02N2/0005—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing non-specific motion; Details common to machines covered by H02N2/02 - H02N2/16
- H02N2/001—Driving devices, e.g. vibrators
- H02N2/003—Driving devices, e.g. vibrators using longitudinal or radial modes combined with bending modes
- H02N2/004—Rectangular vibrators
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は超音波振動エネルギーを利用しなモータに関す
る。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a motor that uses ultrasonic vibration energy.
（従来の技術）
進行波を応用した超音波モータは低速で高１ヘルクが発
生する等の特徴を持ち、例えば特開昭５９−１．２２３
Ｂ５には第２図に示す様なモータが提案されている。(Prior art) Ultrasonic motors that utilize traveling waves have characteristics such as generating a high 1 herk at low speeds.
A motor as shown in FIG. 2 has been proposed for B5.
第２図において弾性体２１にはＡ方向に進行する屈曲波
が励振されている。この場合弾性体の表面粒子は楕円振
動をするため、弾性体上に移動体２２を圧接ずれば移動
体はＢの方向へ動く。In FIG. 2, a bending wave traveling in the direction A is excited in the elastic body 21. In this case, the surface particles of the elastic body vibrate elliptically, so if the moving body 22 is pressed against the elastic body, the moving body moves in the direction B.
（発明が解決しようとする問題点）
しかし上記の様なモータで直線モータをｔｆｔｉ成する
場合、純粋な進行波を励振するために端部からの反射波
の防止に特別な配慮をする必要が生じる。例えば弾性板
の両端部に進行波を完全に吸収するための特殊な振動吸
収体を接合する必要がある。(Problem to be solved by the invention) However, when constructing a linear motor using the motor described above, special consideration must be taken to prevent reflected waves from the ends in order to excite pure traveling waves. arise. For example, it is necessary to attach special vibration absorbers to both ends of the elastic plate to completely absorb traveling waves.
また、弾性体表面の楕円振動の横方向振動成分が小さい
ため移動体の移動速度及びトルクをあまり大きくするこ
とができない。Furthermore, since the transverse vibration component of the elliptical vibration on the surface of the elastic body is small, the moving speed and torque of the moving body cannot be increased very much.
本発明はこの様な従来の欠点を除去せしめた紙送り用超
音波モータを提供することにある。The object of the present invention is to provide an ultrasonic motor for paper feeding which eliminates such conventional drawbacks.
（問題点を解決するための手段）
本発明は弾性体に縦振動と一次元屈曲振動の定在波を同
時に駆動することにより、弾性体表面に楕円振動を励起
することを特徴とする。(Means for Solving the Problems) The present invention is characterized in that elliptical vibration is excited on the surface of the elastic body by simultaneously driving standing waves of longitudinal vibration and one-dimensional bending vibration on the elastic body.
（作用）
上記の様な二つの定在波を同時に励振すると、まず定在
波であることから反射波を抑圧するための特別な装置が
不要となる。(Function) When two standing waves as described above are excited simultaneously, since they are standing waves, a special device for suppressing reflected waves is not required.
また、縦振動の定在波が屈曲振動とは別個に励振される
ため、横方向振動成分が進行波の場合より大きい。従っ
て高速、高トルクが実現できる。Furthermore, since the standing wave of longitudinal vibration is excited separately from the bending vibration, the transverse vibration component is larger than that of the traveling wave. Therefore, high speed and high torque can be achieved.
第３図（ａ）は縦振動と一次元屈曲振動の定在波を同時
に励振するための一つの方法を示している。弾性板３１
の裏面に厚み方向に一様に分極された圧電セラミック板
３２が貼り合せられており、圧電セラミック板の両面に
は金属電極膜３３が設けられている。この電極間に２つ
の振動モードの共振周波数の交流電気信号を交流電源３
４から入力すると縦振動及び−次元屈曲振動の定在波が
弾性体に励振される。第３図（ｂ）は縦振動定在波の変
位分布３５と一次元屈曲振動の定在波の変位分’ｆｉｇ
３６を示している。また、第３図＜ｃ）は２つの定在
波が同時に励振された場合の弾性体表面の粒子の運動を
示すもので、領域■と■及び領域■と■とでは互に逆方
向の楕円振動が励振される。FIG. 3(a) shows one method for simultaneously exciting standing waves of longitudinal vibration and one-dimensional bending vibration. Elastic plate 31
A piezoelectric ceramic plate 32 that is uniformly polarized in the thickness direction is bonded to the back surface of the piezoelectric ceramic plate, and metal electrode films 33 are provided on both sides of the piezoelectric ceramic plate. An AC power supply 3 transmits an AC electric signal at a resonance frequency of two vibration modes between these electrodes.
4, standing waves of longitudinal vibration and -dimensional bending vibration are excited in the elastic body. Figure 3(b) shows the displacement distribution 35 of the standing wave of longitudinal vibration and the displacement of the standing wave of one-dimensional bending vibration.
36 is shown. In addition, Figure 3<c) shows the motion of particles on the surface of an elastic body when two standing waves are excited at the same time. Vibration is excited.
（実施例）
以下本発明の実施例について図面を参照しながら説明す
る。 ）、
第１図は本発明の実施例を示ず図で、弾性板１１の裏面
には両面に金属電極膜の施された圧電セラミック板１２
が貼り合せられている。弾性板１２の」二に紙１３が置
かれ、紙１３は回転可能なローラー１４で弾性板１２に
点圧接されている。(Example) Examples of the present invention will be described below with reference to the drawings. ), FIG. 1 does not show an embodiment of the present invention, and on the back side of the elastic plate 11 is a piezoelectric ceramic plate 12 having metal electrode films on both sides.
are pasted together. A piece of paper 13 is placed on the second side of the elastic plate 12, and the paper 13 is brought into point pressure contact with the elastic plate 12 by a rotatable roller 14.
圧電セラミックに交流信号を入力し、弾性板に縦振動定
在波と一次元屈曲振動定在波を同時に励振すると、弾性
板表面には楕円振動が励振され、ローラーが回転しなが
ら紙を送ることができる。When an AC signal is input to the piezoelectric ceramic and a longitudinal vibration standing wave and a one-dimensional bending vibration standing wave are simultaneously excited in the elastic plate, elliptical vibration is excited on the surface of the elastic plate, and the paper is fed while the roller rotates. Can be done.
なお、高次振動モードを利用しても同様にして紙送りが
実現できる。It should be noted that paper feeding can also be achieved in the same manner using a higher-order vibration mode.
（発明の効果〉
本発明によれば振動吸収装置が不要で、高速、高１ヘル
ク、薄型の超音波による紙送り機構が実現できる。(Effects of the Invention) According to the present invention, a high speed, high 1 herk, and thin ultrasonic paper feeding mechanism can be realized without the need for a vibration absorbing device.
第１図は本発明の実施例を示す図。第２図は従来の超音
波モータの構成を示す図。第３図は縦振動定在波と一次
元屈曲振動の定在波を同時に励振するための方法を示す
図。
図中、１１，２１．３１・・・弾性板、１２．３２・・
・圧電セラミック板、１３・・・紙、１４・・・ローラ
ー、２２・・・移動体、３３・・・電極、３４・電源、
３５・・縦振動変位分布、３６・・・屈曲振動変位分布
、をそれぞれ示している。
第１図FIG. 1 is a diagram showing an embodiment of the present invention. FIG. 2 is a diagram showing the configuration of a conventional ultrasonic motor. FIG. 3 is a diagram showing a method for simultaneously exciting a standing wave of longitudinal vibration and a standing wave of one-dimensional bending vibration. In the figure, 11, 21.31... elastic plate, 12.32...
- Piezoelectric ceramic plate, 13... Paper, 14... Roller, 22... Moving body, 33... Electrode, 34... Power supply,
35...Longitudinal vibration displacement distribution, 36...Bending vibration displacement distribution are shown, respectively. Figure 1
Claims (1)
とする超音波モータの駆動方法。A method for driving an ultrasonic motor characterized by simultaneously driving longitudinal vibration and one-dimensional bending vibration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62126635A JPS63294269A (en) | 1987-05-22 | 1987-05-22 | Driving method for ultrasonic wave motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62126635A JPS63294269A (en) | 1987-05-22 | 1987-05-22 | Driving method for ultrasonic wave motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63294269A true JPS63294269A (en) | 1988-11-30 |
Family
ID=14940073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62126635A Pending JPS63294269A (en) | 1987-05-22 | 1987-05-22 | Driving method for ultrasonic wave motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63294269A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5665918A (en) * | 1994-12-26 | 1997-09-09 | Canon Kabushiki Kaisha | Linear vibration actuator utilizing combined bending and longitudinal vibration modes |
| US6091179A (en) * | 1994-11-09 | 2000-07-18 | Nikon Corporation | Vibration actuator drive device and method of use |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6044439A (en) * | 1983-08-22 | 1985-03-09 | Canon Inc | Sheet carrying device |
| JPS6082548A (en) * | 1983-10-07 | 1985-05-10 | Canon Inc | Sheet transport device |
| JPS6152164A (en) * | 1984-08-21 | 1986-03-14 | Hitachi Maxell Ltd | Cantilever beam supersonic elliptical vibrator |
| JPS63277477A (en) * | 1987-02-02 | 1988-11-15 | Rion Co Ltd | Piezoelectric resonance motor |
-
1987
- 1987-05-22 JP JP62126635A patent/JPS63294269A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6044439A (en) * | 1983-08-22 | 1985-03-09 | Canon Inc | Sheet carrying device |
| JPS6082548A (en) * | 1983-10-07 | 1985-05-10 | Canon Inc | Sheet transport device |
| JPS6152164A (en) * | 1984-08-21 | 1986-03-14 | Hitachi Maxell Ltd | Cantilever beam supersonic elliptical vibrator |
| JPS63277477A (en) * | 1987-02-02 | 1988-11-15 | Rion Co Ltd | Piezoelectric resonance motor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6091179A (en) * | 1994-11-09 | 2000-07-18 | Nikon Corporation | Vibration actuator drive device and method of use |
| US5665918A (en) * | 1994-12-26 | 1997-09-09 | Canon Kabushiki Kaisha | Linear vibration actuator utilizing combined bending and longitudinal vibration modes |
| US5936328A (en) * | 1994-12-26 | 1999-08-10 | Canon Kabushiki Kaisha | Linear vibration actuator utilizing combined bending and longitudinal vibration modes |
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