JPS54100687A - Piezoelectric actuator - Google Patents
Piezoelectric actuatorInfo
- Publication number
- JPS54100687A JPS54100687A JP769678A JP769678A JPS54100687A JP S54100687 A JPS54100687 A JP S54100687A JP 769678 A JP769678 A JP 769678A JP 769678 A JP769678 A JP 769678A JP S54100687 A JPS54100687 A JP S54100687A
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric
- resistance
- piezoelectric element
- damping
- metal 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
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
PURPOSE: To obtain the excellent damping effect of a bimorph type piezoelectric vibrator without adding a mechanical damping method to its outside, by connecting a resistance in series to a piezoelectric element.
CONSTITUTION: Bimorph type piezoelectric vibrator 13 consists of elastic metal plate 16 and piezoelectric elements 15 stuck to both the sides of it, and its center part is fixed to stand 14 via holders 7 and 8 of an insulator. Lead wires, fitted to electrodes stuck to surfaces of piezoelectric elements 15, are connected to driver circuit 17 via resistance 18. Piezoelectric element 15 is capacitive, bending displacement occurs by an applied voltage, and sudden rise step power applied to elastic metal plate 16 causes an attenuation vibration to occur. As a result, series resistance 18 is inserted into piezoelectric element 15 to lower the charging speed, so that damping can be attained. In this way, the excellent damping effect can be obtained without adding a damping method of complex structure to the outside, and an inexpensive piezoelectric actuator of simple structure can be realized.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP769678A JPS54100687A (en) | 1978-01-25 | 1978-01-25 | Piezoelectric actuator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP769678A JPS54100687A (en) | 1978-01-25 | 1978-01-25 | Piezoelectric actuator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54100687A true JPS54100687A (en) | 1979-08-08 |
Family
ID=11672924
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP769678A Pending JPS54100687A (en) | 1978-01-25 | 1978-01-25 | Piezoelectric actuator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54100687A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5961555U (en) * | 1982-10-14 | 1984-04-23 | オムロン株式会社 | Piezoelectric bimorph drive circuit |
JPS6048513A (en) * | 1983-08-26 | 1985-03-16 | Hitachi Ltd | Positoning mechanism |
JPS60149033A (en) * | 1984-01-14 | 1985-08-06 | Copal Co Ltd | Exposure control device |
JPS6177124A (en) * | 1984-09-21 | 1986-04-19 | Nec Kansai Ltd | Displacement magnifying mechanism |
US6724560B2 (en) | 2000-04-20 | 2004-04-20 | Fujitsu Limited | Head assembly employing microactuator in recording medium drive |
-
1978
- 1978-01-25 JP JP769678A patent/JPS54100687A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5961555U (en) * | 1982-10-14 | 1984-04-23 | オムロン株式会社 | Piezoelectric bimorph drive circuit |
JPS6048513A (en) * | 1983-08-26 | 1985-03-16 | Hitachi Ltd | Positoning mechanism |
JPS60149033A (en) * | 1984-01-14 | 1985-08-06 | Copal Co Ltd | Exposure control device |
JPS6177124A (en) * | 1984-09-21 | 1986-04-19 | Nec Kansai Ltd | Displacement magnifying mechanism |
US6724560B2 (en) | 2000-04-20 | 2004-04-20 | Fujitsu Limited | Head assembly employing microactuator in recording medium drive |
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