A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
WORK VEHICLE MAGNETORHEOLOGICAL FLUID JOYSTICK SYSTEMS HAVING ADJUSTABLE JOYSTICK RETURN POSITIONS
In embodiments, a work vehicle magnetorheological fluid (MRF) joystick system includes a joystick device. The joystick device includes, in turn, a base housing and a joystick, which is rotatable relative to the base housing and which is biased toward a joystick return position. An MRF joystick resistance mechanism is controllable to vary an MRF resistance force impeding movement of the joystick relative to the base housing, while a controller architecture is coupled to the MRF joystick resistance mechanism. The controller configured to: (i) selectively enable an operator adjustment of the joystick return position by a work vehicle operator; and (ii) when enabling the operator adjustment of the joystick return position, command the MRF joystick resistance mechanism to maintain the MRF resistance force at a predetermined level until the operator adjustment of the joystick return position is terminated.
WORK VEHICLE MAGNETORHEOLOGICAL FLUID JOYSTICK SYSTEMS HAVING ADJUSTABLE JOYSTICK RETURN POSITIONS
In embodiments, a work vehicle magnetorheological fluid (MRF) joystick system includes a joystick device. The joystick device includes, in turn, a base housing and a joystick, which is rotatable relative to the base housing and which is biased toward a joystick return position. An MRF joystick resistance mechanism is controllable to vary an MRF resistance force impeding movement of the joystick relative to the base housing, while a controller architecture is coupled to the MRF joystick resistance mechanism. The controller configured to: (i) selectively enable an operator adjustment of the joystick return position by a work vehicle operator; and (ii) when enabling the operator adjustment of the joystick return position, command the MRF joystick resistance mechanism to maintain the MRF resistance force at a predetermined level until the operator adjustment of the joystick return position is terminated.
WORK VEHICLE MAGNETORHEOLOGICAL FLUID JOYSTICK SYSTEMS HAVING ADJUSTABLE JOYSTICK RETURN POSITIONS
GRAHAM BRETT S (author) / VANDEGRIFT ALEX R (author)
2021-11-04
Patent
Electronic Resource
English
IPC:
E02F
Baggern
,
DREDGING
/
F15B
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL
,
Druckmittelbetriebene Systeme allgemein
/
G05G
CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
,
Steuer- oder Regelvorrichtungen oder Steuer- oder Regelsysteme gekennzeichnet ausschließlich durch mechanische Einzelheiten
WORK VEHICLE MAGNETORHEOLOGICAL FLUID JOYSTICK SYSTEMS REDUCING UNINTENDED JOYSTICK MOTIONS
| European Patent Office | 2021
Work vehicle magnetorheological fluid joystick systems reducing unintended joystick motions
| European Patent Office | 2021
Work vehicle magnetorheological fluid joystick systems reducing unintended joystick motions
| European Patent Office | 2023
Work vehicle magnetorheological fluid joystick systems operable in modified joystick stiffness modes
| European Patent Office | 2021
WORK VEHICLE MAGNETORHEOLOGICAL FLUID JOYSTICK SYSTEMS OPERABLE IN MODIFIED JOYSTICK STIFFNESS MODES
| European Patent Office | 2021