Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Vehicle subsystem or accessory control
Reexamination Certificate
2005-05-31
2005-05-31
Camby, Richard M. (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Vehicle subsystem or accessory control
C701S042000, C701S070000, C303S139000, C303S146000
Reexamination Certificate
active
06901319
ABSTRACT:
The present invention is a method for controlling a ground vehicle, for automated steering control of the vehicle or the like. The method of the present invention includes using a GPS receiver or the like and an inertial gyro or the like for providing automated steering control of the ground vehicle. A difference between a measured off-track error and a lateral error command is fed into a lateral error control loop, producing a lateral velocity command. Then, a difference between a measured lateral velocity and the lateral velocity command is fed into a lateral velocity control loop, producing a yaw rate command. Finally, a difference between a measured yaw rate, the yaw rate command, and a curved track yaw rate for the intended path of the vehicle is computed and fed into a yaw rate control loop, producing a valve command for steering the ground vehicle on or towards its intended path. Inputs such as measured wheel slip and the like are used to estimate the steering authority of the steered wheels of the vehicle; the estimated steering authority and/or the actions of a user driving the vehicle are used to adjust the gain of the yaw rate control loop.
REFERENCES:
patent: 5742918 (1998-04-01), Ashrafi et al.
patent: 5742919 (1998-04-01), Ashrafi et al.
patent: 5809434 (1998-09-01), Ashrafi et al.
patent: 6499559 (2002-12-01), Mc Cann et al.
patent: 6658342 (2003-12-01), Hac
patent: 6671595 (2003-12-01), Lu et al.
patent: 6675094 (2004-01-01), Russell et al.
Miller Byron K.
Nelson Frederick W.
Schick Troy E.
Camby Richard M.
Deere & Company
Suiter - West PC LLO
LandOfFree
System and method for controlling a ground vehicle does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for controlling a ground vehicle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for controlling a ground vehicle will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3439231