Title:
MOTOR DRIVE CONTROLLER
Document Type and Number:
Japanese Patent JP2003033087
Kind Code:
A
Abstract:
To provide a motor drive controller in which the torque being generated from a motor can be kept constant regardless of variation or alteration of power supply voltage by monitoring the power supply voltage and varying a total current flowing through the motor depending on the power supply voltage thereby keeping the current flowing through the coil of the motor at a constant level.
The motor drive controller comprises means for setting a current flowing through a motor, means for detecting a power supply voltage required for driving the motor, and means for altering the motor current being set by the motor current setting means according to voltage information from the voltage detecting means.
Inventors:
MISUMI HIROYOSHI
Application Number:
JP2001214609A
Publication Date:
January 31, 2003
Filing Date:
July 16, 2001
Export Citation:
Assignee:
CANON KK
International Classes:
H02P8/12; H02P8/22; (IPC1-7): H02P8/12; H02P8/22
Attorney, Agent or Firm:
Masuaki Tanaka (1 outside)