Title:
SPEED SIGNAL PROCESSOR FOR MOTOR
Document Type and Number:
Japanese Patent JPS5819174
Kind Code:
A
Abstract:
PURPOSE:To enhance the accuracy of a motor by amplifying the output of a speed frequency generator by an amplifier at the constant speed rotating time and then inputting it to a speed control circuit and a stop detecting circuit, thereby removing the offset of the amplifier with the reference signal of a stop detector. CONSTITUTION:After the output of a speed frequency generator FG secured to the middle value of a power voltage at one end by a voltage dividing ratio of resistors R1, R2 is amplified by the amplifier having an operational amplifier 1, resistors R2, R4, R5, a variable resistor 2 and a switch 3, the output is inputted to a constant-speed control circuit 5 and a stop circuit. The stop circuit has an operational amplifier 6, comparators 7, 8, 9, and the influence of the drift and offset of the amplifier is removed by a drive and offset compensating circuit having a resistor R9 and a condenser C2.
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Inventors:
UCHIDA RIYOUHEI
FUJII TOSHIFUMI
WATABE MIYOKAZU
YAMAZAKI TATSUO
FUJII TOSHIFUMI
WATABE MIYOKAZU
YAMAZAKI TATSUO
Application Number:
JP11692681A
Publication Date:
February 04, 1983
Filing Date:
July 25, 1981
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
C08G73/00; H02P29/00; C08G73/14; H02P5/00; (IPC1-7): H02P5/00
Attorney, Agent or Firm:
Masuo Oiwa