Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Vehicle subsystem or accessory control
Patent
1999-09-30
2000-09-12
Nguyen, Tan
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Vehicle subsystem or accessory control
701 41, 180 664, B62D 1100, B62D 1110
Patent
active
061190616
ABSTRACT:
A device for controlling an electro-hydraulic differential steering system of a work machine. A first processing device receives a first signal indicative of a desired steering path, a second signal indicative of a ground speed, a third signal indicative of an engine speed, and a fourth signal indicative of a gage. The first processing device transmits a fifth signal as a function of the first, second, third, and fourth signals, the fifth signal being indicative of a desired pump displacement of the steering system. A second processing device receives a sixth signal indicative of a motor speed of the steering system, and the third signal. The second processing device transmits a seventh signal as a function of the third and sixth signals, the seventh signal being indicative of an actual pump displacement of the steering system. A proportional and integral controller is coupled with the first processing device to receive the fifth signal and coupled with the second processing device to receive the seventh signal.
REFERENCES:
patent: 4076090 (1978-02-01), Krusche et al.
patent: 4161865 (1979-07-01), Day
patent: 4315555 (1982-02-01), Schritt
patent: 5099938 (1992-03-01), Watanabe et al.
patent: 5101919 (1992-04-01), Ossi
patent: 5208751 (1993-05-01), Berkefeld
patent: 5249639 (1993-10-01), Marr et al.
patent: 5487437 (1996-01-01), Avitan
patent: 5489005 (1996-02-01), Marcott et al.
patent: 5497692 (1996-03-01), Marcott
patent: 5520262 (1996-05-01), Marcott
patent: 5553517 (1996-09-01), Yesel et al.
patent: 5590041 (1996-12-01), Cooper
patent: 5787374 (1998-07-01), Ferguson et al.
patent: 5805449 (1998-09-01), Ito
patent: 6039133 (2000-03-01), Zulu
Mistry and Hou, "Steering System of John Deer 8000 Series Track Tractors," FPST-vol. 5, Fluid Power Systems & Technology, ASME 1998, (month is not available).
Section 260 Steering and Brakes Operation Manual TM1622 (Sep. 22, 1997).
Schenkel Nathan T.
Tady Stephen T.
Thate Jeffrey M.
Wilcox Arlyn P.
Caterpillar Inc.
Green Clifton G.
Nguyen Tan
Tran Dalena
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