JPS55150285A - Method of suppressing self-oscillation of electromechanical converter - Google Patents
Method of suppressing self-oscillation of electromechanical converterInfo
- Publication number
- JPS55150285A JPS55150285A JP5727679A JP5727679A JPS55150285A JP S55150285 A JPS55150285 A JP S55150285A JP 5727679 A JP5727679 A JP 5727679A JP 5727679 A JP5727679 A JP 5727679A JP S55150285 A JPS55150285 A JP S55150285A
- Authority
- JP
- Japan
- Prior art keywords
- bimorph
- self
- oscillation
- sigmas1
- voltage
- 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.)
- Granted
Links
- 238000006073 displacement reaction Methods 0.000 abstract 2
- 230000001052 transient effect Effects 0.000 abstract 2
- 230000002194 synthesizing effect Effects 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
- B06B1/0603—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a piezoelectric bender, e.g. bimorph
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
PURPOSE:To abruptly displace a bimorph without self-oscillation in an electromechanical converter by superimposing second drive voltage having the same period, amplitude and 180 deg. of phase difference as and from the self-oscillation components in the first drive voltage to the first drive voltage. CONSTITUTION:When predetermined voltage 22 is stepwisely applied to a bimorph, it can respond with a wave 23 of T/2 with self-vibration period T until the initial peak value due to the transient theory. When the Q factor of the bimorph is approx. 10, the excessive amount is approx. 1, and the amplitude sigmat1 is twice the ideal displacement sigmas1. Accordingly, the bimorph is displaced by sigmas1/2 by the pulse 24. The response of the bimorph for the pulse waveform 24 is the synthesized negative and positive stepwise voltage 25 and 26, and the responses to the respective voltage becomes self-oscillation with the period T and the amplitude sigmas1. Therefore, when synthesizing them by taking into consideration with the symbolts, the bimorph responds with the waveform 29. When it is now driven by the synthesized waveform 20 of the pulse 24 and the stepwise voltage 22, the transient response of the bimorph becomes the waveform 31. After the rise time of the T/2 period the displacement sigmas1 becomes constant to abruptly displace without self-oscillation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54057276A JPS6019677B2 (en) | 1979-05-10 | 1979-05-10 | Method for suppressing self-excited vibration of electro-mechanical conversion elements |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54057276A JPS6019677B2 (en) | 1979-05-10 | 1979-05-10 | Method for suppressing self-excited vibration of electro-mechanical conversion elements |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55150285A true JPS55150285A (en) | 1980-11-22 |
| JPS6019677B2 JPS6019677B2 (en) | 1985-05-17 |
Family
ID=13051006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54057276A Expired JPS6019677B2 (en) | 1979-05-10 | 1979-05-10 | Method for suppressing self-excited vibration of electro-mechanical conversion elements |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6019677B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5656034U (en) * | 1979-10-08 | 1981-05-15 | ||
| JPH0430317A (en) * | 1990-05-25 | 1992-02-03 | Matsushita Electric Ind Co Ltd | Driving signal generator for electromechanical conversion element and resonance frequency detector |
| WO2020152091A1 (en) * | 2019-01-25 | 2020-07-30 | Robert Bosch Gmbh | Readout signal generator and method for operating a capacitive device |
-
1979
- 1979-05-10 JP JP54057276A patent/JPS6019677B2/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5656034U (en) * | 1979-10-08 | 1981-05-15 | ||
| JPS626579Y2 (en) * | 1979-10-08 | 1987-02-16 | ||
| JPH0430317A (en) * | 1990-05-25 | 1992-02-03 | Matsushita Electric Ind Co Ltd | Driving signal generator for electromechanical conversion element and resonance frequency detector |
| WO2020152091A1 (en) * | 2019-01-25 | 2020-07-30 | Robert Bosch Gmbh | Readout signal generator and method for operating a capacitive device |
| CN113795729A (en) * | 2019-01-25 | 2021-12-14 | 罗伯特·博世有限公司 | Readout signal generator and method for operating a capacitive device |
| JP2022518491A (en) * | 2019-01-25 | 2022-03-15 | ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | How to operate the read signal generator and capacitive device |
| US11733068B2 (en) | 2019-01-25 | 2023-08-22 | Robert Bosch Gmbh | Readout signal generator and method for operating a capacitive device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6019677B2 (en) | 1985-05-17 |
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