Earth working – Automatic power control – Motive power control
Patent
1981-09-24
1985-05-07
Stouffer, Richard T.
Earth working
Automatic power control
Motive power control
33318, 73178R, 180131, 318587, A01B 6904
Patent
active
045152217
ABSTRACT:
An agricultural tractor having two longitudinally aligned back wheels on each side receiving an endless track of the "caterpillar" type and steerable front wheels which are controlled automatically by a predetermined line of travel whereby the tractor is maintained within margins equidistant from the line of travel defining a path which it is desired the tractor follow to perform agricultural operations such as plowing. The tractors's actual track is monitored and compared with the desired line of travel by programmed steering operating to correct deviations. A single gyroscope which has its axis of rotation parallel to the earth's axis of rotation stabilizes a platform, keeping it perfectly horizontal for two accelerometers, one aligned with the tractor's longitudinal center line and the other at right angles thereto. The accelerometers monitor accelerations by the tractor to establish its position relative to its starting point and to its deviations from the line of travel. The tractor's steering wheel may be used to override the automatic operation. The tractor travels back and forth along parallel paths and negotiates turns at the end of each run, each such turn being accomplished by programmed steering corrected by actual variations which occur from the programmed turn as signalled by the transverse accelerometer. Preferably, the tractor's implement is automatically raised during each turn.
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Albright Penrose Lucas
Stouffer Richard T.
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