JPS6464381A - Piezoelectric element control device - Google Patents
Piezoelectric element control deviceInfo
- Publication number
- JPS6464381A JPS6464381A JP62220139A JP22013987A JPS6464381A JP S6464381 A JPS6464381 A JP S6464381A JP 62220139 A JP62220139 A JP 62220139A JP 22013987 A JP22013987 A JP 22013987A JP S6464381 A JPS6464381 A JP S6464381A
- Authority
- JP
- Japan
- Prior art keywords
- potential
- piezoelectric element
- leakage current
- contact
- electrode
- 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
- 239000003990 capacitor Substances 0.000 abstract 2
- 230000007423 decrease Effects 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
PURPOSE:To eliminate an influence of leakage current by providing a means for setting a potential drift at a contact due to the leakage current to an initial state. CONSTITUTION:If an input signal Vin is input to an operational amplifier 1, a voltage is impressed on an electrode 5 in such a way that a potential at a contact 3 becomes Vin. When a leakage current at a piezoelectric element 4 is more than that at a capacitor 2, the potential at the contact 3 rises. Accordingly, a potential at the electrode 5 drops, and a displacement amount at the piezoelectric element 4 decreases. When the leakage current at the piezoelectric element 4 is less than that at the capacitor 2, a reverse phenomenon occurs. During this process, a switch 8 is closed; the potential at the contact 3 is set to a ground potential; at the same time, the electrode 5 is set to the ground potential. If this operation is executed, an influence due to the leakage current can be eliminated. If an appropriate resistor R is inserted between switches 8, 9 and the ground, it is possible to prevent the piezoelectric element 4 from being broken down by an chance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62220139A JPS6464381A (en) | 1987-09-04 | 1987-09-04 | Piezoelectric element control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62220139A JPS6464381A (en) | 1987-09-04 | 1987-09-04 | Piezoelectric element control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6464381A true JPS6464381A (en) | 1989-03-10 |
Family
ID=16746510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62220139A Pending JPS6464381A (en) | 1987-09-04 | 1987-09-04 | Piezoelectric element control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6464381A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014519802A (en) * | 2011-06-17 | 2014-08-14 | エッペンドルフ アクチェンゲゼルシャフト | Actuator device with control device |
| US9422520B2 (en) | 2009-12-23 | 2016-08-23 | Eppendorf Ag | System and method for generating a tool motion |
-
1987
- 1987-09-04 JP JP62220139A patent/JPS6464381A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9422520B2 (en) | 2009-12-23 | 2016-08-23 | Eppendorf Ag | System and method for generating a tool motion |
| JP2014519802A (en) * | 2011-06-17 | 2014-08-14 | エッペンドルフ アクチェンゲゼルシャフト | Actuator device with control device |
| US10031493B2 (en) | 2011-06-17 | 2018-07-24 | Andreas Schirr | Actuator apparatus with control device |
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