JPH0488489U - - Google Patents
Info
- Publication number
- JPH0488489U JPH0488489U JP40336490U JP40336490U JPH0488489U JP H0488489 U JPH0488489 U JP H0488489U JP 40336490 U JP40336490 U JP 40336490U JP 40336490 U JP40336490 U JP 40336490U JP H0488489 U JPH0488489 U JP H0488489U
- Authority
- JP
- Japan
- Prior art keywords
- motor
- circuit
- output
- speed
- converter
- 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 1
- 238000010586 diagram Methods 0.000 description 4
- 238000009499 grossing Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
Landscapes
- Jib Cranes (AREA)
Description
第1図は本考案の実施例を示すブロツク図、第
2図は本考案の主要部分の回路動作波形図、第3
図は従来例を示すブロツク図である。
1……交流電源、2……整流平滑回路、3……
スイツチングトランス、4……スイツチング素子
、5……モータ、6……F/V(周波数/電圧)
変換器、7……基準電圧、8……誤差増幅器、9
……可変デユーテイ・レシオ形パルス発生器、1
0……DC―DCコンバータ、13……CR積分
回路、14……基準電圧、15……比較器。
Fig. 1 is a block diagram showing an embodiment of the present invention, Fig. 2 is a circuit operation waveform diagram of the main part of the invention, and Fig. 3 is a block diagram showing an embodiment of the present invention.
The figure is a block diagram showing a conventional example. 1... AC power supply, 2... Rectifier smoothing circuit, 3...
Switching transformer, 4...Switching element, 5...Motor, 6...F/V (frequency/voltage)
Converter, 7... Reference voltage, 8... Error amplifier, 9
...Variable duty ratio pulse generator, 1
0...DC-DC converter, 13...CR integration circuit, 14...Reference voltage, 15...Comparator.
Claims (1)
された直流電源をトランスを介してスイツチング
素子でPWM制御するDC―DCコンバータと、
このDC―DCコンバータの出力で駆動されるモ
ータと、このモータの速度検出器で検出した出力
を前記DC―DCコンバータに入力してPWM制
御する速度制御回路と、前記速度検出器からの出
力信号を受けて速度状態に応じた電圧レベルを出
力するCR積分回路と前記CR積分回路の出力と
基準電圧を比較して速度状態を検出する比較器よ
りなる速度状態検出回路を備えたモータ駆動用ス
イツチング電源。 (2) 前記モータは駆動回路を内蔵したDCブラ
シレスモータであることを特徴とする請求項1記
載のモータ駆動用スイツチング電源。 (3) 前記モータからの速度信号はモータのコミ
ユテータセンサー出力を速度信号とすることを特
徴とする請求項1記載のモータ駆動用スイツチン
グ電源。[Claims for Utility Model Registration] (1) A rectifier circuit, and a DC-DC converter that performs PWM control on a DC power source rectified and smoothed by the rectification circuit using a switching element via a transformer;
A motor driven by the output of the DC-DC converter, a speed control circuit that inputs the output detected by the speed detector of the motor to the DC-DC converter for PWM control, and an output signal from the speed detector. A motor drive switching device comprising a speed state detection circuit comprising a CR integrating circuit which outputs a voltage level according to the speed state based on the received voltage, and a comparator which detects the speed state by comparing the output of the CR integrating circuit with a reference voltage. power supply. (2) The switching power supply for driving a motor according to claim 1, wherein the motor is a DC brushless motor having a built-in driving circuit. (3) The switching power supply for driving a motor according to claim 1, wherein the speed signal from the motor is an output from a commutator sensor of the motor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP40336490U JPH0488489U (en) | 1990-12-13 | 1990-12-13 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP40336490U JPH0488489U (en) | 1990-12-13 | 1990-12-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0488489U true JPH0488489U (en) | 1992-07-31 |
Family
ID=31881153
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP40336490U Pending JPH0488489U (en) | 1990-12-13 | 1990-12-13 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0488489U (en) |
-
1990
- 1990-12-13 JP JP40336490U patent/JPH0488489U/ja active Pending
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