Electricity: motive power systems – Positional servo systems – Vehicular guidance systems with single axis control
Patent
1996-04-25
1997-07-22
Ip, Paul
Electricity: motive power systems
Positional servo systems
Vehicular guidance systems with single axis control
318586, 901 1, 180167, 180168, B62D 128
Patent
active
056507038
ABSTRACT:
An automated guided vehicle (AGV) control system which is downward compatible with existing guidewire systems providing both guidewire navigation and communication and autonomous navigation and guidance and wireless communication between a central controller and each vehicle. FIGS. 90, 91, 92, 93, and 94 provide a map showing relative orientation of the schematic circuits seen in FIGS. 90A-B, 91A-B, 92A-B, 93A-B, and 94A-B, respectively over paths marked by update markers which may be spaced well apart, such as fifty feet. Redundant measurement capability using inputs from linear travel encoders from the vehicle's drive wheels, position measurements from the update markers, and bearing measurements from a novel angular rate sensing apparatus, in combination with the use of a Kalman filter, allows correction for navigation and guidance errors caused by such factors as angular rate sensor drift, wear, temperature changes, aging, and early miscalibration during vehicle operation. The control system employs high frequency two-way data transmission and reception capability over the guidewires and via wireless communications. The same data rates and message formats are used in both guidewire and wireless communications systems. Substantially the same communications electronics are used for the central controller and each vehicle. Novel navigation and guidance algorithms are used to select and calculate a non-linear path to each next vehicle waypoint when the vehicle is operating in the autonomous mode. The non-linear path originates with an initial direction equal to the heading of the vehicle as it enters the path and a waypoint heading defined as part of the message received from the central control system which plans and controls travel of each vehicle in the system.
REFERENCES:
patent: 4347573 (1982-08-01), Friedland
patent: 4556940 (1985-12-01), Katoo et al.
patent: 4680715 (1987-07-01), Pawelek
patent: 4727492 (1988-02-01), Reeve et al.
patent: 4817000 (1989-03-01), Eberhardt
patent: 5075693 (1991-12-01), McMillan et al.
patent: 5127486 (1992-07-01), Yardley et al.
patent: 5175480 (1992-12-01), McKeefery et al.
patent: 5179329 (1993-01-01), Nishikawa et al.
patent: 5187664 (1993-02-01), Yardley et al.
patent: 5191528 (1993-03-01), Yardley et al.
patent: 5202832 (1993-04-01), Lisy
patent: 5204814 (1993-04-01), Noonan et al.
patent: 5220263 (1993-06-01), Onishi et al.
patent: 5245335 (1993-09-01), Hill et al.
patent: 5267173 (1993-11-01), Tanizawa et al.
patent: 5280431 (1994-01-01), Summerville et al.
patent: 5329449 (1994-07-01), Tanizawa et al.
patent: 5341540 (1994-08-01), Soupert et al.
patent: 5347456 (1994-09-01), Zhang et al.
patent: 5367456 (1994-11-01), Summerville et al.
patent: 5369591 (1994-11-01), Broxmeyer
patent: 5387853 (1995-02-01), Ono
Bloomfield Bryan A.
Christensen L. Bruce
Forman Robert K.
Guest Vaughn W.
Mottes Rick S.
HK Systems Inc.
Ip Paul
LandOfFree
Downward compatible AGV system and methods does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Downward compatible AGV system and methods, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Downward compatible AGV system and methods will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1562088