Title:
MOTOR DRIVE CIRCUIT
Document Type and Number:
Japanese Patent JP2014171277
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a motor drive circuit capable of avoiding generation of speed ripples in one rotation of an electric angle.SOLUTION: A sinusoidal first signal 11a, a sinusoidal second signal 12a having a phase shifted from the first signal 11a by 180 degrees, and a sinusoidal third signal 13a having a phase shifted from both the first and second signals 11a and 12a by 90 degrees, are inputted from first to third input parts 11-13 to one end of an A-phase coil 21, one end of a B-phase coil 22, and a connection point 23, respectively.
Inventors:
MOTOJIMA TORU
Application Number:
JP2013040317A
Publication Date:
September 18, 2014
Filing Date:
March 01, 2013
Export Citation:
Assignee:
TAMAGAWA SEIKI CO LTD
International Classes:
H02P8/14; H02P29/00
Attorney, Agent or Firm:
Michiharu Soga
Jun Kajinami
Masahiro Taguchi
Ichiro Oi
Kazuhiro Mitsunaga
Jun Kajinami
Masahiro Taguchi
Ichiro Oi
Kazuhiro Mitsunaga