JPS60177693U

JPS60177693U - FG signal detection circuit for DC FG servo motor

Info

Publication number: JPS60177693U
Application number: JP1984063634U
Authority: JP
Inventors: 岡野　光隆
Original assignee: シチズン時計株式会社
Priority date: 1984-04-27
Filing date: 1984-04-27
Publication date: 1985-11-26

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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案に係る直流モータ駆動回路の好適な実施
例を示す回路図、第２図は第１図の各部波形図、第３図
は第１図に示した実施例のロータ、ＦＧコイル及びステ
ータコイルの積層配置を示す説明図である。１０・・・ロータ、１２・・・ステータコイル、１４・
・・駆動トランジスタ、１６・・−ＦＧコイル、１８・
・・増幅器、２０・・・リミッタ、２′２・・・微分回
路、２４・・・速度制御回路、２５・・・零りｐス回路
。Fig. 1 is a circuit diagram showing a preferred embodiment of the DC motor drive circuit according to the present invention, Fig. 2 is a waveform diagram of each part of Fig. 1, and Fig. 3 is a rotor and FG of the embodiment shown in Fig. 1. FIG. 3 is an explanatory diagram showing a stacked arrangement of coils and stator coils. 10... Rotor, 12... Stator coil, 14...
・・Drive transistor, 16・・FG coil, 18・
...Amplifier, 20...Limiter, 2'2...Differentiating circuit, 24...Speed control circuit, 25...Zero ps circuit.

Claims

[Scope of utility model registration request]

A direct current FG in which an FG coil is fixedly disposed on the base side facing a permanent magnet type rotor rotatably supported on the base, and an FG multiplied signal is detected based on a voltage induced in the FG coil when the rotor rotates. In the servo motor FG signal detection circuit, a differentiation circuit that differentiates the FG coil output;
a zero cross circuit that outputs a pulse signal corresponding to the zero cross position from the output of the differentiator circuit, and outputs a speed signal corresponding to the peak position of the output of the front yG coil. FG signal detection circuit.