JPS63294272A - Driving method for ultrasonic wave motor - Google Patents
Driving method for ultrasonic wave motorInfo
- Publication number
- JPS63294272A JPS63294272A JP62126638A JP12663887A JPS63294272A JP S63294272 A JPS63294272 A JP S63294272A JP 62126638 A JP62126638 A JP 62126638A JP 12663887 A JP12663887 A JP 12663887A JP S63294272 A JPS63294272 A JP S63294272A
- Authority
- JP
- Japan
- Prior art keywords
- elastic plate
- oscillation
- vibration
- paper sheet
- plate
- 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 5
- 238000005452 bending Methods 0.000 claims abstract description 14
- 239000000919 ceramic Substances 0.000 abstract description 5
- 230000010355 oscillation Effects 0.000 abstract 6
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 238000005516 engineering process Methods 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
- H02N2/0005—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
-
- 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
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たモータに関す
る。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a motor that utilizes ultrasonic vibration energy.
（従来の技術）
弾性体に縦振動と屈曲振動とを独立して同時に駆動し、
弾性体表面に楕円振動を励起して、これをステータとす
る超音波モータが提案されている。(Conventional technology) By driving longitudinal vibration and bending vibration independently and simultaneously in an elastic body,
An ultrasonic motor has been proposed that excites elliptical vibration on the surface of an elastic body and uses this as a stator.
（発明が解決しようとする問題点）
しかし、」１記の様な構成のモータでは、縦振動と屈曲
振動の振巾極大点が一般には一致しない。(Problems to be Solved by the Invention) However, in a motor configured as described in item 1, the maximum amplitude points of longitudinal vibration and bending vibration generally do not coincide.
従って、モータの速度やＩ・ルクがあまり大きくない。Therefore, the motor speed and I-lux are not very large.
（問題点を解決するための手段）
本発明は縦振動と屈曲振動の振巾極大点を一致させる事
を特徴とする超音波モータの駆動方法である。(Means for Solving the Problems) The present invention is an ultrasonic motor driving method characterized by making the amplitude maximum points of longitudinal vibration and bending vibration coincide.
（作用）
上記の様に縦振動と屈曲振動の振巾極大点が一致する様
な振動モードを選らび、この点を駆動点に利用すると高
速、高トルク超音波モータが実現する。(Function) As described above, by selecting a vibration mode in which the maximum amplitude points of longitudinal vibration and bending vibration coincide, and using this point as a driving point, a high-speed, high-torque ultrasonic motor can be realized.
第２図（ａ）は２つの振動モードの振巾極大点を一致さ
せるための駆動方法を示している。」二下面に金属電極
膜２３を設は厚み方向に一様に分極した圧電セラミック
板２２を弾性板２１の裏面に貼り合せ、電極間に２つの
振動モードの共振周波数に等しい電気信号を入力する。FIG. 2(a) shows a driving method for matching the amplitude maximum points of two vibration modes. A piezoelectric ceramic plate 22 having a metal electrode film 23 on its lower surface is attached to the back surface of the elastic plate 21, and an electric signal equal to the resonance frequency of the two vibration modes is input between the electrodes. .
第２図＜ｂ）は２次の縦振動２４と１次の屈曲振動２５
の振巾変位分布を示している。弾性体の中央部では２つ
の振動モードの振巾変位が極大となるため、この位置で
弾性体表面に励起される楕円振動の振巾変位は極大とな
る。Figure 2<b) shows the second-order longitudinal vibration 24 and the first-order bending vibration 25.
The amplitude displacement distribution is shown. Since the amplitude displacements of the two vibration modes are maximum at the center of the elastic body, the amplitude displacement of the elliptical vibration excited on the surface of the elastic body is maximum at this position.
（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。(Example) Examples of the present invention will be described below with reference to the drawings.
第１図は本発明の実施例を示す図で、弾性板１１には両
生面に金属電極膜を設けた圧電セラミック板１２が貼り
合せられている。そしてこの弾性板は２次の縦振動と１
次の屈曲振動が同じ周波数で駆動される様に設計されて
いる。FIG. 1 is a diagram showing an embodiment of the present invention, in which a piezoelectric ceramic plate 12 having a metal electrode film provided on both sides is bonded to an elastic plate 11. And this elastic plate has two-order longitudinal vibration and one
It is designed so that the next bending vibration is driven at the same frequency.
弾性板」二には紙１３がおかれ、この紙は回転可能なロ
ーラー１４により弾性板の中央部に圧接されている。A paper 13 is placed on the elastic plate 2, and this paper is pressed against the center of the elastic plate 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２次の縦
振動と１次の屈曲振動とを同時に励振すると弾性板表面
には楕円振動が励起される。そしてこの楕円振動の振動
振巾は弾性板の中央部で極大となるので、ローラーが回
転しながら紙は高速、高トルクで送られる。When an alternating current signal is input to the piezoelectric ceramic and the elastic plate is simultaneously excited with second-order longitudinal vibration and first-order bending vibration, elliptical vibration is excited on the surface of the elastic plate. Since the amplitude of this elliptical vibration is maximum at the center of the elastic plate, the paper is fed at high speed and high torque while the roller rotates.
なお、上記実施例は２次の縦振動と１次の１次元屈曲振
動を同時に励振した場合の例であるが、一般には偶数次
数の縦振動と奇数次数の屈曲振動を同時に励振すれば、
各々の振動振巾の極大となる点をほぼ一致させることが
できる。奇数次数の縦振動と偶数次数の屈曲振動を組み
合せてもよい。Note that the above embodiment is an example in which a second-order longitudinal vibration and a first-order one-dimensional bending vibration are simultaneously excited, but in general, if an even-order longitudinal vibration and an odd-order bending vibration are simultaneously excited,
The maximum points of each vibration amplitude can be made to substantially coincide. Odd-order longitudinal vibration and even-order bending vibration may be combined.
また、縦振動と板の２次元屈曲振動の組み合せでもよい
。Alternatively, a combination of longitudinal vibration and two-dimensional bending vibration of the plate may be used.
（発明の効果）
本発明によれば高速、高トルクの超音波紙送り機構が実
現できる。(Effects of the Invention) According to the present invention, a high-speed, high-torque ultrasonic paper feeding mechanism can be realized.
第１図は本発明の実施例を示す図。第２図は縦振動と屈
曲振動の振巾変位の極大値を一致させるための駆動方法
を示す図。FIG. 1 is a diagram showing an embodiment of the present invention. FIG. 2 is a diagram showing a driving method for matching the maximum values of amplitude displacement of longitudinal vibration and bending vibration.
Claims (1)
振動モードの振巾最大点を一致させ、この部分を駆動点
として利用する事を特徴とした超音波モータの駆動方法
。A method for driving an ultrasonic motor, characterized in that longitudinal vibration and bending vibration are simultaneously excited, the amplitude maximum points of these two types of vibration modes are made to coincide, and this portion is used as a driving point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62126638A JPS63294272A (en) | 1987-05-22 | 1987-05-22 | Driving method for ultrasonic wave motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62126638A JPS63294272A (en) | 1987-05-22 | 1987-05-22 | Driving method for ultrasonic wave motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63294272A true JPS63294272A (en) | 1988-11-30 |
Family
ID=14940149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62126638A Pending JPS63294272A (en) | 1987-05-22 | 1987-05-22 | Driving method for ultrasonic wave motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63294272A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999031740A1 (en) * | 1997-12-15 | 1999-06-24 | Nanomotion Ltd. | Conveying means and method |
Citations (5)
| 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 |
| JPS6091873A (en) * | 1983-10-20 | 1985-05-23 | Showa Electric Wire & Cable Co Ltd | Supersonic motor |
| JPS6044495B2 (en) * | 1978-07-20 | 1985-10-03 | トヨタ自動車株式会社 | Combustion chamber of internal combustion engine with auxiliary combustion chamber |
| JPS6152164A (en) * | 1984-08-21 | 1986-03-14 | Hitachi Maxell Ltd | Cantilever beam supersonic elliptical vibrator |
-
1987
- 1987-05-22 JP JP62126638A patent/JPS63294272A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6044495B2 (en) * | 1978-07-20 | 1985-10-03 | トヨタ自動車株式会社 | Combustion chamber of internal combustion engine with auxiliary combustion chamber |
| 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 |
| JPS6091873A (en) * | 1983-10-20 | 1985-05-23 | Showa Electric Wire & Cable Co Ltd | Supersonic motor |
| JPS6152164A (en) * | 1984-08-21 | 1986-03-14 | Hitachi Maxell Ltd | Cantilever beam supersonic elliptical vibrator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999031740A1 (en) * | 1997-12-15 | 1999-06-24 | Nanomotion Ltd. | Conveying means and method |
| US6617759B1 (en) | 1997-12-15 | 2003-09-09 | Nanomotion Ltd. | Conveying means and method |
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