Title:
SPEED CONTROLLING METHOD FOR MOTOR
Document Type and Number:
Japanese Patent JPS58170387
Kind Code:
A
Abstract:
PURPOSE:To rapidly synchronize a rotating speed of a motor by energizing the motor in response to the time from the external reference pulse to the motor position pulse in response to the arrival of the motor to the prescribed rotating speed. CONSTITUTION:When a motor start signal is supplied to a motor drive circuit for driving the motor, a high level signal is generated from an inverter 3, supplied as a motor drive component to a line 7 through an OR circuit 2 to a motor drive circuit, thereby driving the motor. In this manner, the motor is started rotating, and the rotating speed of the motor is raised. Thus, the motor position pulse is started to be generated. When the rotating speed of the motor becomes larger than the prescribed value, the motor drive component is switched to a pulse train signal generated from a flip-flop 1 from a continuous signal so far. The continuous time of each pulse of the pulse train is the period from the reference pulse to the motor position pulse.
Inventors:
HORIE HIDEO
Application Number:
JP5074182A
Publication Date:
October 06, 1983
Filing Date:
March 29, 1982
Export Citation:
Assignee:
FUJITSU LTD
International Classes:
H02P29/00; (IPC1-7): H02P5/00
Attorney, Agent or Firm:
Koshiro Matsuoka