Method of controlling recovery in electric power steering...

Details Method of controlling recovery in electric power steering... Method of controlling recovery in electric power steering...

2006-08-29

2006-08-29

Morris, Lesley D. (Department: 3611)

Motor vehicles

Steering gear

With electric power assist

C180S444000, C701S041000, C701S042000

Reexamination Certificate

active

07096994

ABSTRACT:
The present invention relates to a method of controlling recovery in an electric power steering system which can enhance the recovery control function during recovery after steering when discriminating a recovery state using a steering angle and a steering angular velocity by determining whether or not the steering angular velocity is more than a predetermined value and carrying out recovery control only in the corresponding recovery state.The method of controlling recovery of the present invention comprises a first step of setting a recovery gain and a recovery pattern; a second step of obtaining a recovery current; a third step of determining whether the steering angular velocity is more than a predetermined value; and a fourth step of obtaining a motor driving current and performing the recovery control function by controlling the operation of the motor according to the obtained motor driving current.

REFERENCES:
patent: 5881836 (1999-03-01), Nishimoto et al.
patent: 6041887 (2000-03-01), Kojo et al.
patent: 6360151 (2002-03-01), Suzuki et al.
patent: 6729435 (2004-05-01), Yamada et al.
patent: 6856869 (2005-02-01), Takahashi
patent: 2002/0060538 (2002-05-01), Hara et al.
patent: 3923654 (1990-02-01), None
patent: 1 300 321 (2003-09-01), None

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