Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
MOTOR DRIVER
Document Type and Number:
Japanese Patent JPS566688
Kind Code:
A
Abstract:
PURPOSE:To perform well-balanced full-wave driving, by providing two drive circuits to cause a forward current and a backward current to flow through windings and by controlling the backward current depending on the difference between a reference voltage and a voltage corresponding to the current flowing through the winding. CONSTITUTION:The first drive circuit 12 for causing a forward half-wave current to alternately flow through polyphase stator windings 14 and the second drive circuit 13 for causing a backward half-wave current to alternately flow through the windings are provided. A signal from a rotor position detector 11 is applied to both the drive circuits to control their operating states. A voltage corresponding to the current flowing through the stator winding 14 is detected and applied to a comparison circuit 15, which compares the voltage with a reference voltage V. The operation of the second drive circuit 13 is controlled depending on the difference between the compared voltage. As a result, the forward and the backward currents flow in a well-balanced state through the polyphase stator windings 14 to produce high torque without causing vibration and torque scattering.

Inventors:
NAKANE HIROSHI
IZUMI MINORU
KAWAKAMI HIROSHI
MORISHITA TATSUO
Application Number:
JP8214479A
Publication Date:
January 23, 1981
Filing Date:
June 29, 1979
Export Citation:
Click for automatic bibliography generation   Help
International Classes:
H02P6/08; G11B19/20; H02P5/00; (IPC1-7): G11B19/20