Motor vehicles – Steering gear – With electric power assist
Reexamination Certificate
2005-05-24
2005-05-24
DePumpo, Daniel G. (Department: 3611)
Motor vehicles
Steering gear
With electric power assist
C701S042000
Reexamination Certificate
active
06896094
ABSTRACT:
A steering system (10) and method (70) for controlling the steering of a vehicle having a steering assembly including a steering wheel (12), a steering column (14) connected to said steering wheel (12), and an electric motor (20) operatively engaged with the steering assembly for supplying torque assist. A steering angle sensor (32) is employed for sensing an angular position θcof the steering column (14). The steering system has first and second H-infinity controllers (64A and64B) coupled in a feedback path (44) for generating first and second feedback signals as a function of the driver torque and first and second characteristics (JCand KC) of the steering system. One of the first and second feedback signals is selected and the selected feedback signal is combined with a feedforward signal to generate a motor control signal (U) as a function of the estimated torque.
REFERENCES:
patent: 4703821 (1987-11-01), Shimizu
patent: 4840389 (1989-06-01), Kawabe et al.
patent: 4871039 (1989-10-01), Daido et al.
patent: 5038269 (1991-08-01), Grimble et al.
patent: 5198981 (1993-03-01), Collier-Hallman et al.
patent: 5202830 (1993-04-01), Tsurumiya et al.
patent: H1410 (1995-01-01), Hartley
patent: 5627750 (1997-05-01), Kono et al.
patent: 5631529 (1997-05-01), Shimizu et al.
patent: 5642722 (1997-07-01), Schumacher et al.
patent: 5690087 (1997-11-01), Schumacher et al.
patent: 5697867 (1997-12-01), Kono et al.
patent: 5732373 (1998-03-01), Endo
patent: 5809438 (1998-09-01), Noro et al.
patent: 5819714 (1998-10-01), Bush et al.
patent: 5836418 (1998-11-01), Kim
patent: 5857443 (1999-01-01), Kono et al.
patent: 5859774 (1999-01-01), Kuzuya et al.
patent: 5861725 (1999-01-01), Endo et al.
patent: 5908457 (1999-06-01), Higashira et al.
patent: 6148949 (2000-11-01), Kobayashi et al.
patent: 6250419 (2001-06-01), Chabaan et al.
patent: 6293366 (2001-09-01), Chabaan et al.
patent: 6407524 (2002-06-01), Endo et al.
patent: 6450112 (2002-09-01), Deghuee
patent: 1125823 (2001-08-01), None
“Vehicle Dynamics and Control Synthesis for Four-Wheel Steering Passenger Cars,” by You et al., Dec. 1998, pp. 449-461.
“Electric Power Steering with H-Infinity Control Designed to Obtain Road Information,” by N. Sugitani, Y. Fujuwara, K. Uchida, and M. Fujita, Proc. Of the ACC, Albuquerque, New Mexico, Jun. 1997, 5 pages.
“Power Steering ‘Road Feel’,” by F. J. Adams, SAE Paper 8300998, 1983, 9 pages.
“Analysis of Stiffness and Feel for a Power-Assisted Rack and Pinion Steering Gear,” by J. Baxter, SEA paper 880706, 1998, 7 pages.
“Control and Steering Feel Issues in the Design of an Electric Power Steering System,” by A. Zaremba, M. Liubakka, and R. Stuntz, Proc. Of the ACC, 1998, 5 pages.
“Vibration Control Based on Dynamic Compensation in an Electric Power Steering System,” by A. Zaremba, M. Liubakka, and R. Stuntz, Prep. Of the Int. Conf. On Control of Oscillations and Chaos, St. Petersburg, vol. 3, 1997, pp. 453-456.
“Dynamic Analysis and Stability of a Power Assist Steering System,” by A. Zaremba and R. Davis, Proc. Of the ACC, Seattle, Washington, Jun. 1995, pp. 4253-4257.
Brown Gregory P.
DePumpo Daniel G.
Ford Global Technologies LLC
LandOfFree
H-infinity control and gain scheduling method for electric... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with H-infinity control and gain scheduling method for electric..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and H-infinity control and gain scheduling method for electric... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3406579