JPH0260494U - - Google Patents
Info
- Publication number
- JPH0260494U JPH0260494U JP13879488U JP13879488U JPH0260494U JP H0260494 U JPH0260494 U JP H0260494U JP 13879488 U JP13879488 U JP 13879488U JP 13879488 U JP13879488 U JP 13879488U JP H0260494 U JPH0260494 U JP H0260494U
- Authority
- JP
- Japan
- Prior art keywords
- detection means
- oscillation
- secondary coil
- switching
- current
- 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
- 238000001514 detection method Methods 0.000 claims description 8
- 230000010355 oscillation Effects 0.000 claims 5
- 238000010586 diagram Methods 0.000 description 2
Description
第１図はこの考案の一実施例である超音波アク
チエータ駆動回路の構成を示すブロツク図、第２
従来の駆動回路の構成を示すブロツク図である。
１２……トランス、１３……トランジスタ（ス
イツチング制御手段）、１５……掛算回路（乗算
制御手段）、１６……発振回路、１７……ドライ
ブ回路（スイツチング制御手段）、ＰＴ……電流
検出トランス（電流検出手段）、ＣＴ……電圧検
出トランス（電圧検出手段）。
Figure 1 is a block diagram showing the configuration of an ultrasonic actuator drive circuit that is an embodiment of this invention.
1 is a block diagram showing the configuration of a conventional drive circuit. FIG. 12...transformer, 13...transistor (switching control means), 15...multiplication circuit (multiplication control means), 16...oscillator circuit, 17...drive circuit (switching control means), PT...current detection transformer ( CT... Voltage detection transformer (voltage detection means).
Claims (1)
ツチングすることにより、２次コイルから駆動電
流を発生させる超音波アクチエータの駆動回路に
おいて、前記２次コイルの出力電流値を検出する
電流検出手段と、前記２次コイルの出力電圧値を
検出する電圧検出手段と、発振回路と、この発振
回路の発振信号に基づいて前記１次コイルのスイ
ツチングを制御するスイツチング制御手段と、前
記電流検出手段および電圧検出手段の各検出結果
を乗算し、この乗算値が最大となるように前記発
振回路の発振周波数を制御する乗算制御手段とを
具備することを特徴とする超音波アクチエータの
駆動回路。 In an ultrasonic actuator drive circuit that generates a drive current from a secondary coil by switching a power supply supplied to a primary coil of a transformer, a current detection means for detecting an output current value of the secondary coil; Voltage detection means for detecting the output voltage value of the secondary coil; an oscillation circuit; switching control means for controlling switching of the primary coil based on an oscillation signal of the oscillation circuit; and the current detection means and voltage detection means. 1. A drive circuit for an ultrasonic actuator, comprising: multiplication control means for multiplying each of the detection results and controlling the oscillation frequency of the oscillation circuit so that the multiplication value becomes maximum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13879488U JPH0260494U (en) | 1988-10-25 | 1988-10-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13879488U JPH0260494U (en) | 1988-10-25 | 1988-10-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0260494U true JPH0260494U (en) | 1990-05-02 |
Family
ID=31401465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13879488U Pending JPH0260494U (en) | 1988-10-25 | 1988-10-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0260494U (en) |
-
1988
- 1988-10-25 JP JP13879488U patent/JPH0260494U/ja active Pending