Power plants – Pressure fluid source and motor – Having condition responsive control in a system of distinct...
Patent
1991-12-20
1993-10-05
Look, Edward K.
Power plants
Pressure fluid source and motor
Having condition responsive control in a system of distinct...
60431, 60445, 60487, 91515, 91459, F16D 3102
Patent
active
052494225
ABSTRACT:
A drive system for a work vehicle is provided which includes first and second hydrostatic transmissions which are responsive to respective control signals for driving first and second ground engaging devices at a rate responsive thereto. A sensor is provided sensing the position of a manually operable control element and responsively producing a desired speed signal. A memory device is adapted to store data relates the desired speed signal to the first and second control signals in a preselected manner. A processor is provided for receiving the desired speed signal, responsively retrieving at least a portion of the data from the memory device, and producing the first and second control signals in response to the retrieved data and the desired speed signal. An adjusting device is provided for receiving at least one of the control signals, permitting controllable adjustment of the control signal so as to vary the speed of a respective ground engaging device. An overwriting device is provided for receiving the adjusted control signal and overwriting a portion of the stored data in response to the adjusted control signal.
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Smith Vernon R.
Stahl Alan L.
Caterpillar Inc.
Look Edward K.
Nguyen Hoang
Wilbur R. Carl
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