Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Vehicle subsystem or accessory control
Patent
1996-03-08
1998-10-27
Nguyen, Tan Q.
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Vehicle subsystem or accessory control
701 42, 701 44, 701 50, 180422, 180445, 56 102F, A01B 6900, G06F 1700
Patent
active
058289712
ABSTRACT:
The automatic steering device for an electrically controllable hydraulic steering system automatically controls steered wheels (HR) of a steered vehicle, especially an agricultural machine, according to at least one electronic steering control signal (SHL,SHR). The automatic steering device includes one or more locating devices (OV) producing one or more locating signals (OS), a regulating device (ST) which periodically digitizes the locating signal or signals (OS), and produces the at least one electronic steering control signal by a logic combination of the digitized locating signal or signals and a predetermined locating criterion, particularly a lateral displacement of the vehicle from an edge of an agricultural material, to minimize a deviation of the locating signal or signals determined according to the predetermined criterion so that the at least one electronic steering control signal (SHL,SHR) increases in an approximately proportional manner in the vicinity of a null deviation from the predetermined locating criterion but increases progressively beyond the vicinity of the null deviation. A fuzzification of the control criteria and a defuzzification of at least one intermediate parameter to form the at least one electronic steering control signal (SHL,SHR) are disclosed.
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JP 61-13311 Nihon Yusouki K.K. and Minoru Okada, Patents Abstracts of Japan Jan. 1986.
Autermann Ludger
Diekhans Norbert
Hagedorn Stefan
Huster Jochen
Claas KGaA
Nguyen Tan Q.
Striker Michael J.
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