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Title:
ELECTRIC POWER STEERING DEVICE
Document Type and Number:
Japanese Patent JP2008296801
Kind Code:
A
Abstract:

To provide an electric power steering device capable of suppressing reverse input through a steering wheel without giving adverse influence to steering feeling.

When ECU 30 controls generation of assistant force by a motor 40 according to a correction current value i1 set according to a torque variation amount dT/dt, i.e., a variation amount per a unit time of steering torque T, the correction current value i1 is set to a larger current value (reverse input suppression gain G=G1) than a usual current value (reverse input suppression gain G=1) when front/rear acceleration a is not an acceleration threshold value a0 or lower (not during braking) or when an absolute value of the steering torque T is not a torque threshold value Tb or lower (during steering) to control the motor 40 when the front/rear acceleration a is the acceleration threshold value a0 or lower (during braking) and the absolute value of the steering torque T is the torque threshold value Tb or lower (not during steering).


Inventors:
AONO SHINYA
Application Number:
JP2007146557A
Publication Date:
December 11, 2008
Filing Date:
June 01, 2007
Export Citation:
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Assignee:
JTEKT CORP
International Classes:
B62D6/00; B62D5/04
Domestic Patent References:
JP2006111048A2006-04-27
JP2003306161A2003-10-28
JP2001328553A2001-11-27
JPH068837A1994-01-18
JPH0811731A1996-01-16
JP2006131191A2006-05-25
JPS6378878A1988-04-08
Attorney, Agent or Firm:
Akito Tashita
Katsuhiko Tateishi