Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Vehicle subsystem or accessory control
Reexamination Certificate
2008-03-25
2008-03-25
Keith, Jack (Department: 3663)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Vehicle subsystem or accessory control
Reexamination Certificate
active
10863956
ABSTRACT:
A real-time vehicle dynamics estimation system that employs a vehicle parameter estimator, a vehicle condition detector and a rich steering input detector for estimating vehicle understeer coefficient and front and rear cornering compliances in real time. The vehicle parameter estimator receives a front wheel steering angle signal, a rear wheel steering angle signal, a vehicle lateral acceleration signal, a vehicle yaw rate signal and a vehicle speed signal, and employs a linear parameter estimation algorithm for estimating the understeer coefficient, and the front and rear corning compliance. The vehicle condition detector receives the front wheel steering angle signal, the rear wheel steering angle signal, the vehicle yaw rate signal and the vehicle speed signal, and disables the vehicle parameter estimator if the vehicle is not operating in a linear region. The rich steering input detector receives the front wheel angle signal, the rear wheel angle signal and the vehicle speed signal, and provides an output signal indicating whether the estimated vehicle parameters are reliable and are ready to be used.
REFERENCES:
patent: 5765118 (1998-06-01), Fukatani
patent: 5895433 (1999-04-01), Chen et al.
patent: 5931887 (1999-08-01), Hac
patent: 6112147 (2000-08-01), Ghoneim et al.
patent: 6134509 (2000-10-01), Furusho et al.
patent: 6161905 (2000-12-01), Hac et al.
patent: 6195606 (2001-02-01), Barta et al.
patent: 6508102 (2003-01-01), Margolis et al.
patent: 6547343 (2003-04-01), Hac
patent: 2002/0128770 (2002-09-01), Ooishi
patent: 2002/0143451 (2002-10-01), Hac et al.
patent: 2002/0195293 (2002-12-01), Will
patent: 2003/0130775 (2003-07-01), Lu et al.
patent: 2004/0148077 (2004-07-01), Yasui et al.
Bundorf, R. T., & Leffert, R. L. (1976). The cornering complaince concept for description of vehicle directional control properties. SAE, 760713. Warrendale, PA: Society of Automotive Engineers.
H. E. Tseng, D. Madau, B. Ashrafi, T. Brown, D. Recker. Technical Challenges in The Development of Vehicle Stability Control System. This paper appears in: Control Applications, 1999. Proceedings of the 1999 IEEE International Conference on Publication Date: 1999. Vol. 2, On pp. 1660-1666 vol. 2 Meeting Date: Aug. 22, 1999-Aug. 27, 1999.
M. Arndt, E. L. Ding and T. Massel. Identification of Cornering Stiffness During Lane Change Maneuvers. This paper appears in: Control Applications, 2004. Proceedings of the 2004 IEEE International Conference on. Publication Date: Sep. 2-4, 2004 vol. 1, On pp. 344-349 vol. 1.
Rusty Anderson and David M. Bevly. Estimation of Tire Cornering Stiffness Using GPS to Improve Model Based Estimation of Vehicle States. This paper appears in: Intelligent Vehicles Symposium, 2005. Proceedings. IEEE Publication Date: Jun. 6-8, 2005 On pp. 801-806.
Iserman, R., Diagnosis Methods for Electronic Controlled Vehicles; 5th International Symposium on Advanced Vehicle Control (AVEC 2000), Aug. 22-24, 2000, Ann Arbor, MI USA.
Matsumoto, N., Tomizuka, M., Vehicle Lateral Velocity and Yaw Rate Control with Two Independent Control Inputs, Journal of Dynamic Systems, Measurement and Control, Dec. 1992, vol. 114, pp. 606-613.
Chin Yuen-Kwok
Shin Kwang-Keun
Diacou Ari M.
General Motors Corporation
Keith Jack
LandOfFree
Real-time vehicle dynamics estimation system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Real-time vehicle dynamics estimation system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Real-time vehicle dynamics estimation system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3909658