Motor vehicles – Steering gear – With fluid power assist
Reexamination Certificate
2005-08-09
2005-08-09
Lerner, Avraham (Department: 3611)
Motor vehicles
Steering gear
With fluid power assist
C180S446000
Reexamination Certificate
active
06926114
ABSTRACT:
Disclosed herein in an exemplary embodiment is a method for providing variable assist in an active steering system of a vehicle. The method comprises: receiving an input signal that includes at least one of, a variable ratio command signal, a stability command signal, a hand wheel position signal, a vehicle speed signal indicative of a speed of the vehicle, a signal indicative of an operator selected function, and a signal indicative a vehicle operating mode. The method also comprises: generating an assist command to an assist mechanism responsive to the input signal wherein the assist mechanism is operatively coupled to the differential actuator and a road wheel of the steering system to provide an assist torque responsive to the motion of the output shaft. The active steering system includes a hand wheel operatively coupled to an input of a differential actuator and a motor operatively coupled to the differential actuator. The differential actuator is configured to translate motion of the input into motion of the output shaft, where the motion of the output shaft is further responsive to the motor and wherein the output shaft is coupled to the road wheel of the steering system.
REFERENCES:
patent: 4871040 (1989-10-01), Zuraski et al.
patent: 4932492 (1990-06-01), Sauvageot et al.
patent: 5050697 (1991-09-01), Umemura
patent: 5285867 (1994-02-01), Pedersen et al.
patent: 5704446 (1998-01-01), Chandy et al.
patent: 6205371 (2001-03-01), Wolter-Doll
patent: 6547031 (2003-04-01), Magnus
patent: 6568499 (2003-05-01), Nakazawa et al.
patent: 6575265 (2003-06-01), Richardson et al.
patent: 6678594 (2004-01-01), Byers et al.
patent: 6681881 (2004-01-01), Andonian et al.
patent: 2003/0146038 (2003-08-01), Mills et al.
SAE Technical Paper Series; 1999-01-0395; Improvement in Driver-Vehicle System Performance by Varying Steering Gain with Vehicle Speed and Steering Angle: VGS (Variable Gear-Ratio Steering System); International Congress and Exposition, Detroit, MI; Mar. 1-4, 1999; pp. 117-126.
Bednar Edward J.
Bolourchi Farhad
Boswell Karen A.
Dickinson John E.
Martens John D.
Delphi Technologies Inc.
Lerner Avraham
Smith Michael D.
LandOfFree
Assist modification in active front steering does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Assist modification in active front steering, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Assist modification in active front steering will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3523245