Title:
STOP CONTROLLER FOR MOTOR
Document Type and Number:
Japanese Patent JPS5446316
Kind Code:
A
Abstract:
PURPOSE:To improve stopping accuracy by constituting negative feedback with rotation detecting means for motor and stop control circuit for integrating the rotation and controlling to make integrated rotation to zero. CONSTITUTION:During running of magnetic tape switch 28 is connected to a side and capstan motor 18 is controlled through drive circuit 29 to constant speed by control signal provided from running servo device 27. Upon provision of tape stop command switch 28 is connected to b side and capstan motor 18 is stopped through drive circuit 29 by stop control signal supplied from stop control circuit 30 on the basis of rotation signal. Here negative feedback loop is constituted with drive circuit 29, capstan motor 18, rotation detecting means 31 and stop control circuit 30 to control to make time integrated rotation to zero.
Inventors:
NAKATAKE MASAMICHI
Application Number:
JP11377777A
Publication Date:
April 12, 1979
Filing Date:
September 20, 1977
Export Citation:
Assignee:
HITACHI ELECTRONICS
International Classes:
H02P3/00; H02P3/06; H02P3/08; (IPC1-7): H02P3/06