Title:
MOTOR DRIVE SYSTEM, IMAGE FORMATION DEVICE AND TRANSPORTATION DEVICE
Document Type and Number:
Japanese Patent JP2017135768
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To improve stability of motor control.SOLUTION: In a motor drive system, a permanent magnet type motor is formed in such a manner as a plurality of adjoining polar teeth members extending in rotational axial line direction with a specified interval along circumferential direction bite each other, to face a rotor magnet with a plurality of N-poles and S-poles alternately magnetized on an outer periphery. A base end side of each polar teeth has first and second ring-like polar teeth parts connected in ring-like and a magnetic path constriction part formed at each of the first and second ring-like polar teeth parts. A motor drive control device includes a high frequency generation part which generates a high frequency signal that is supplied to an armature coil of the permanent magnet type motor, a current detection part which detects a high frequency current component of the high frequency signal, and a control part which controls rotation of a rotor based on the high frequency signal and the frequency current component.SELECTED DRAWING: Figure 1
Inventors:
SUZUKI HARUYUKI
Application Number:
JP2016011254A
Publication Date:
August 03, 2017
Filing Date:
January 25, 2016
Export Citation:
Assignee:
RICOH CO LTD
International Classes:
H02P6/18; B41J29/38; H02K37/14; H02P8/38; H02P21/00; H02P27/04
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Tadahiko Ito
Previous Patent: Electric-energy-conversion unit
Next Patent: An electricity-receiving device and a power transmission device
Next Patent: An electricity-receiving device and a power transmission device