Steering control apparatus

Details Steering control apparatus Steering control apparatus

2005-09-06

2005-09-06

Hurley, Kevin (Department: 3611)

Motor vehicles

Steering gear

With electric power assist

C701S042000, C180S402000

Reexamination Certificate

active

06938725

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:
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patent: 5623409 (1997-04-01), Miller
patent: 5698956 (1997-12-01), Nishino et al.
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patent: 6686845 (2004-02-01), Oyama
patent: 6838844 (2005-01-01), Shimizu et al.
patent: 2003/0014168 (2003-01-01), Williams
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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