Steering control apparatus

Details Steering control apparatus Steering control apparatus

2006-01-10

2006-01-10

Hurley, Kevin (Department: 3611)

Motor vehicles

Steering gear

With electric power assist

C180S402000, C701S042000

Reexamination Certificate

active

06983818

ABSTRACT:
In the control of an electric power steering apparatus, where so-called lead steering control is performed in which a steering wheel angle signal is output through a lead filter to correct reaction delay of a driver and a vehicle, a delay in control response occurs due to feedback of a road surface reaction force torque. When road surface reaction force torque is fed back to the steering wheel, it is added through a low-pass filter having a time constant equal to a reaction delay time constant of a driver. A sum signal is output through a lead filter to a second motor for controlling a steering shaft.

REFERENCES:
patent: 6686845 (2004-02-01), Oyama
patent: 6863150 (2005-03-01), Tanaka et al.
patent: 2001/0047233 (2001-11-01), Kleinau et al.
patent: 2003/0069675 (2003-04-01), Kifuku et al.
patent: 2003/0076065 (2003-04-01), Shafer et al.
patent: 2000-128002 (2000-09-01), None
Krämer et al., “Potential Functions And Benefits Of Electronic Steering Assistance”,Robert Bosch Gmbh, 1996, pp. 2678-2704, Germany.

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