Title:
DRIVING DEVICE FOR MOTOR
Document Type and Number:
Japanese Patent JPH05161381
Kind Code:
A
Abstract:
PURPOSE: To prevent the torque ripple of a motor from increasing through the common mode noise of an isolating amplifier in the driver of a motor of PWM control system.
CONSTITUTION: In the title driver, ON signal with a constant time length from the rise and fall of PWM pulse is outputted by a hold signal generator 5 and a hold circuit part 6 for holding the output value of an isolating amplifier 4 by this ON signal is equipped so as to prevent the increase of the torque ripple of a motor through the common mode noise of the isolating amplifier 4.
Inventors:
SATO MITSUAKI
Application Number:
JP33969391A
Publication Date:
June 25, 1993
Filing Date:
November 28, 1991
Export Citation:
Assignee:
NEC CORP
International Classes:
H02P7/29; (IPC1-7): H02P5/17
Attorney, Agent or Firm:
Sugano Naka