Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Hiromi Inaba0
Tsunehiro Endo0
Naoto Ohnuma0
Daigo Kaneko0
Ikuo Yamato0
Date of Patent
April 3, 2007
0Patent Application Number
099822340
Date Filed
October 19, 2001
0Patent Primary Examiner
Patent abstract
In order to control the position of a mobile body without using a position detector, a magnetic pole position of a rotor of a synchronous motor is estimated based on electrical quantities in relation to electric power supplied to the synchronous motor and then the mobile body position is estimated based on the estimated magnetic pole position.
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