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Patent Searching and Data


Title:
MOTOR CONTROLLER
Document Type and Number:
Japanese Patent JP2005137080
Kind Code:
A
Abstract:

To provide a motor controller which can realize sine wave drive at low costs even at transient response or at start without using a position detector such as an encoder or the like by detecting the magnetic flux of a motor.

This motor controller is equipped with a magnetic flux detector 102 which detects directly or indirectly the magnetic flux of the motor 100 and a speed controller 106 which drives the motor by sine waves, using the position of the motor detected by a positional signal converter 110 which converts the output of a subtractor 112 for calculating the difference in the quantity of magnetic flux detected by a magnetic flux detector 102.


Inventors:
MATSUURA SADAHIRO
KATO YASUSHI
SUGIURA KENJI
Application Number:
JP2003368659A
Publication Date:
May 26, 2005
Filing Date:
October 29, 2003
Export Citation:
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Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
H02P6/16; H02P6/06; H02P6/08; (IPC1-7): H02P6/16
Attorney, Agent or Firm:
Fumio Iwahashi
Tomoyasu Sakaguchi
Hiroki Naito