JPS59164495U

JPS59164495U - drive circuit

Info

Publication number: JPS59164495U
Application number: JP1983058167U
Authority: JP
Inventors: 滝本　宏之
Original assignee: キヤノン株式会社
Priority date: 1983-04-18
Filing date: 1983-04-18
Publication date: 1984-11-05

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図Ａはブラシレスモータの駆動部の一例を示す図、
第１図Ｂは第１図Ａ各部の波形図、第２図Ａはブラシレ
スモータの駆動部の他の例を示す図、第２図Ｂは第２図
Ａ各部の波形図、第３図Ａはブラシレスモータの駆動部
の更に他の例を示す図、第３図Ｂは第３図Ａ各部の波形
図、第４図Ａはブラシレスモータの駆動部の更に他の例
を示す図、第４図Ｂは第４図Ａ各部の波形図、第５図は
本考案の一実施例としての駆動回路を示す図である。３６．３７．３８は駆動コイル、３９はフィルタい４０
は周波数−電圧変換器、４１はアンプ、４２は３相コイ
ル駆動回路である。 ”３ｌ−２ｑ３ｚ −１斗４．７刀２６　　ｚ７　−　　　　　−FIG. 1A is a diagram showing an example of a drive part of a brushless motor,
Fig. 1B is a waveform diagram of each part of Fig. 1A, Fig. 2A is a diagram showing another example of the drive part of a brushless motor, Fig. 2B is a waveform diagram of each part of Fig. 2A, Fig. 3A 3A is a diagram showing still another example of the drive section of a brushless motor, FIG. 3B is a waveform diagram of each part of FIG. 3A, FIG. FIG. B is a waveform diagram of each part of FIG. 4A, and FIG. 5 is a diagram showing a drive circuit as an embodiment of the present invention. 36, 37, 38 is the drive coil, 39 is the filter 40
is a frequency-voltage converter, 41 is an amplifier, and 42 is a three-phase coil drive circuit. "3l-2q3z -1 to 4.7 sword 26 z7 - -

Claims

[Scope of utility model registration request]

1. A drive circuit for a brushless motor, characterized in that a signal obtained from one of the windings of each phase is supplied as a rotation speed detection signal to a control circuit that controls the rotation speed of the motor.