Motor vehicles – Steering gear – With electric power assist
Reexamination Certificate
2005-02-15
2005-02-15
Lerner, Avraham (Department: 3611)
Motor vehicles
Steering gear
With electric power assist
C318S632000
Reexamination Certificate
active
06854560
ABSTRACT:
An electric power steering apparatus for performing steering assist. The apparatus is provided with an operation amount sensor for sensing an operation amount of an operation member for steering a motor vehicle; a reference assist characteristics setting section for setting reference assist characteristics; and a motor driving target value setting section for setting a motor driving target value in accordance with a corrected assist characteristics obtained by shifting the reference assist characteristics along the axis of coordinates of the operation amount. The apparatus is further provided with a shifting amount setting section for setting, when forward stroke steering is done, the shifting amount to zero, while setting, when return stroke steering is done, the shifting amount to a value at which corrected assist characteristics is obtained in which the absolute value of the motor driving target value corresponding to the operation amount is increased.
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Nishiyama Akihiro
Shimizu Yoshinobu
Koyo Seiko Co. Ltd.
Lerner Avraham
Rabin & Berdo P.C.
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