Vehicle supplementary drive system electronic control - provides signal representative of difference between predetermined proportion of command and feedback signals

Thevehicle, such as a motor grader (10), has variable speed reversible main and supplementary drives to respective wheels (18, 26). An electronic control unit comprises speed sensors associated with each drive and control appts. for processing the signals from them. A control signal is produced repr...

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Bibliographische Detailangaben
Hauptverfasser:	KEITH PFUNDSTEIN,DONALD, IVAN HENN,JOHN
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES AUXILIARY DRIVES FOR VEHICLES BLASTING ENGINEERING ELEMENTS AND UNITS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING INSTRUMENTATION OR DASHBOARDS FOR VEHICLES LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS THERMAL INSULATION IN GENERAL TRANSPORTING VEHICLES IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	Thevehicle, such as a motor grader (10), has variable speed reversible main and supplementary drives to respective wheels (18, 26). An electronic control unit comprises speed sensors associated with each drive and control appts. for processing the signals from them. A control signal is produced representative of the difference between a predetermined portion of the command signal from the main drive speed sensors and the feedback signal from the supplementary drive speed sensors. Servo appts. responsive to the control signal changes the speed of the supplementary drive proportionally, to be les than the speed of the main drive by a predetermined percentage. In a second operative mode there is provided a predetermined of overspeed of the supplementary drive.