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Title:
ELECTRIC POWER STEERING DEVICE
Document Type and Number:
Japanese Patent JP2009057047
Kind Code:
A
Abstract:

To provide an electric power steering device capable of estimating an ambient temperature and limiting a current without using any ambient temperature detection means.

The electric power steering device comprises a motor 1 for assisting a steering force of a driver, a controller for determining and controlling a conductive quantity of the motor 1, and a vehicle speed detection means 12, and further comprises an ambient temperature estimating means 15 receiving a vehicle speed signal from the vehicle speed detection means 12 which limits the current quantity conducted to the motor 1 following an output from the ambient temperature estimating means 15.


Inventors:
ZENITANI SUSUMU
OTAGAKI SHIGEKI
Application Number:
JP2008285435A
Publication Date:
March 19, 2009
Filing Date:
November 06, 2008
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
B62D6/00; B62D101/00; B62D113/00; B62D119/00; B62D127/00
Domestic Patent References:
JPH05193391A1993-08-03
JPH06144279A1994-05-24
JP2005335645A2005-12-08
JP2002362392A2002-12-18
JP2004090676A2004-03-25
JP2001138937A2001-05-22
JP2003284375A2003-10-03
JPH0699832A1994-04-12
JPH06219300A1994-08-09
JPH03132472A1991-06-05
JP2002370660A2002-12-24
JP2005007951A2005-01-13
JP2006082797A2006-03-30
JP2005343293A2005-12-15
Attorney, Agent or Firm:
Masuo Oiwa
Toshihide Kodama
Takenaka Ikuo
Keigo Murakami



 
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