G - Physics – 05 – D
Patent
G - Physics
05
D
G05D 1/02 (2006.01) G01C 19/56 (2006.01)
Patent
CA 2095442
An automated guided vehicle (AGV) control system which is downward compatible with existing guidewire systems pro- viding both guidewire navigation and communication and autonomous navigation and guidance and wireless communication bet- tween a central controller and each vehicle. Autonomous vehicle navigation comprises travel over paths marked by update mark- ers which may be spaced well apart, such as fifty feet. Redundant measurement capability comprising 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 guid- ance errors caused by such factors as angular rate sensor drift, wear, temperature changes, aging, and early miscalibration during vehicle operation. The control system comprises 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 communications sys- tems.
Bloomfield Bryan Alexander
Christensen L. Bruce
Forman Robert Kent
Guest Vaughn Williams
Mottes Rick Samuel
Borden Ladner Gervais Llp
Hk Systems Inc.
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