Work vehicle magnetorheological fluid joystick systems providing machine state feedback

A work vehicle magnetorheological fluid (MRF) joystick system utilized onboard a work vehicle, the work vehicle MRF joystick system comprising:

• a joystick device, comprising:
• a base housing;
• a joystick movably mounted to the base housing;
• and
• a joystick position sensor configured to monitor movement of the joystick relative to the base housing;
• an MRF joystick resistance mechanism controllable to vary an MRF resistance force impeding joystick movement relative to the base housing in at least one degree of freedom;
• and
• a controller architecture coupled to the joystick position sensor and to the MRF joystick resistance mechanism, the controller architecture configured to:
• monitor a current ground speed of the work vehicle;
• and
• selectively command the MRF joystick resistance mechanism to adjust the MRF resistance force based, at least in part, on the current ground speed of the work vehicle.

A work vehicle magnetorheological fluid (MRF) joystick system utilized onboard a work vehicle having a boom-mounted implement, the work vehicle MRF joystick system comprising:

• a joystick device, comprising:
• a base housing;
• a joystick movably mounted to the base housing;
• and
• a joystick position sensor configured to monitor movement of the joystick relative to the base housing;
• an MRF joystick resistance mechanism controllable to vary an MRF resistance force impeding joystick movement relative to the base housing in at least one degree of freedom;
• and
• a controller architecture coupled to the joystick position sensor and to the MRF joystick resistance mechanism, the controller architecture configured to:
• estimate a variable load resisting movement of the boom-mounted implement in at least one direction;
• and
• selectively command the MRF joystick resistance mechanism to increase the MRF resistance force as the variable load increases.