Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Vehicle subsystem or accessory control
Reexamination Certificate
2006-10-31
2006-10-31
Beaulieu, Y. (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Vehicle subsystem or accessory control
C701S041000, C280S005510, C180S006200, C180S006620
Reexamination Certificate
active
07130729
ABSTRACT:
An active rear-wheel vehicle steering control system that employs both open-loop and closed-loop control, where the open-loop and closed-loop control include adaptive compensation sub-systems that compensate for changes in vehicle dynamic parameters. The control system includes a dynamic parameter estimation sub-system that provides an estimated front-wheel cornering compliance and rear-wheel cornering compliance based on 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. The closed-loop control includes active gain for each of vehicle yaw rate, vehicle yaw rate acceleration, side-slip velocity and side-slip velocity rate, all based on the vehicle speed and vehicle dynamic parameter changes.
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Chen Shih-Ken
Shin Kwang-Keun
Beaulieu Y.
General Motors Corporation
Marra Kathryn A.
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