Electric power steering apparatus
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United States of America Patent
Stats
-
Mar 13, 2007
Grant Date -
Mar 3, 2005
app pub date -
May 16, 2003
filing date -
Jul 2, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An electric power steering apparatus is provided, which has a first device for detection of steering torque, a motor, a motor drive unit, a second device for determining a target current based upon at least a signal of steering torque, a third device for detection of a motor current, and a control unit for generating a signal for motor drive based upon at least a deviation between the target current and motor current and transmitting the signal for motor drive to the motor drive unit. The apparatus has a feature that the control unit includes a fourth device for weakening a magnetic field within the motor according to the deviation or a value computed based upon the deviation.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
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