Active wheel steering control

Details Active wheel steering control Active wheel steering control

2006-08-29

2006-08-29

Keith, Jack (Department: 3663)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Vehicle subsystem or accessory control

C701S042000, C701S070000, C180S445000, C180S197000, C303S146000, C303S139000

Reexamination Certificate

active

07099760

ABSTRACT:
A control system that employs closed-loop control for providing active vehicle rear-wheel steering, where the control system receives longitudinal wheel slip inputs to improve the vehicle directional stability. The longitudinal wheel slip inputs can be from one or more of wheel speed, traction control on and automatic braking system on. The control system includes an open-loop controller for generating an open-loop steering control signal, a yaw rate feedback controller for generating a yaw rate feedback signal, and a side-slip rate controller for generating a side-slip rate feedback signal. The open-loop steering control signal, the yaw rate feedback signal and the side-slip rate feedback signal are combined to generate the steering control signal to steer the vehicle rear wheels.

REFERENCES:
patent: 5615117 (1997-03-01), Serizawa
patent: 6959970 (2005-11-01), Tseng
patent: 2002/0198646 (2002-12-01), Bedner et al.
patent: 2003/0130775 (2003-07-01), Lu et al.
patent: 2004/0070268 (2004-04-01), Baumgarten
patent: 2005/0189163 (2005-09-01), Barton et al.
patent: 2005/0209762 (2005-09-01), Lu et al.

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