JPS6352114U - - Google Patents
Info
- Publication number
- JPS6352114U JPS6352114U JP1986146047U JP14604786U JPS6352114U JP S6352114 U JPS6352114 U JP S6352114U JP 1986146047 U JP1986146047 U JP 1986146047U JP 14604786 U JP14604786 U JP 14604786U JP S6352114 U JPS6352114 U JP S6352114U
- Authority
- JP
- Japan
- Prior art keywords
- drive circuit
- circuit
- piezoelectric element
- tracking control
- control input
- 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
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
Description
第１図は本考案の一実施例を示す回路図、第２
図、第３図は、第１図の一部の変更例を示す回路
図、第４図は圧電素子の印加電圧―発生変化量を
示す特性図である。
１……トラツキング制御入力信号、２……バツ
フア、２′，３，４……差動増幅器、５……ドラ
イブ回路、６……圧電素子、７……コンデンサ、
８……可変抵抗器、Ｒ１，Ｒ２……ブリツヂ抵抗
。
Figure 1 is a circuit diagram showing one embodiment of the present invention, Figure 2 is a circuit diagram showing an embodiment of the present invention.
3 are circuit diagrams showing a partial modification of FIG. 1, and FIG. 4 is a characteristic diagram showing the applied voltage of the piezoelectric element versus the amount of change generated. DESCRIPTION OF SYMBOLS 1... Tracking control input signal, 2... Buffer, 2', 3, 4... Differential amplifier, 5... Drive circuit, 6... Piezoelectric element, 7... Capacitor,
8...Variable resistor, R1 , R2 ...Bridge resistance.
Claims (1)
接続したコンデンサと、コンデンサ両端の電圧と
トラツキング制御入力信号とを比較して誤差信号
を出力する誤差検出回路と、トラツキング制御入
力信号と誤差検出回路の誤差信号とがそれぞれ入
力され出力電圧をドライブ回路に帰還接続した差
動増巾回路とを具備したことを特徴とする圧電素
子駆動回路。 A capacitor connected in series to a piezoelectric element driven by a drive circuit, an error detection circuit that compares the voltage across the capacitor with a tracking control input signal and outputs an error signal, and an error signal between the tracking control input signal and the error detection circuit. 1. A piezoelectric element drive circuit comprising: a differential amplification circuit which receives input voltages and connects the output voltages back to the drive circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986146047U JPS6352114U (en) | 1986-09-22 | 1986-09-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986146047U JPS6352114U (en) | 1986-09-22 | 1986-09-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6352114U true JPS6352114U (en) | 1988-04-08 |
Family
ID=31058150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986146047U Pending JPS6352114U (en) | 1986-09-22 | 1986-09-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6352114U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01202178A (en) * | 1988-02-08 | 1989-08-15 | Res Dev Corp Of Japan | Characteristic linearizing method for piezoelectric actuator |
-
1986
- 1986-09-22 JP JP1986146047U patent/JPS6352114U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01202178A (en) * | 1988-02-08 | 1989-08-15 | Res Dev Corp Of Japan | Characteristic linearizing method for piezoelectric actuator |
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