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Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Motonobu Funato0
Kazuki Najima0
Takashi Kawashima0
Shinya Sato0
Akira Ide0
Date of Patent
April 10, 2007
0Patent Application Number
112939140
Date Filed
December 5, 2005
0Patent Primary Examiner
Patent abstract
The control device records, in advance, a current data table which specifies relationships between currents in respective phases in a three-phase motor and rotation angles of a rotor of the three-phase motor, obtains, from the current data table, a rotation angle of the rotor of the three-phase motor corresponding to a current in each phase in the three-phase motor detected by a current sensor before driving of the three-phase motor, and obtains an initial position of the rotor.
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