Machine Configurations Employing Passive And Controllable Cab Mounts

A machine comprising:

• a frame;
• an operator cab supported by the frame;
• one or more passive mounts operatively connecting the operator cab to the frame;
• two controllable mounts operatively connecting the operator cab to the frame, the two controllable mounts each including:
• a housing;
• a pin mounted within the housing;
• a rheological fluid within the housing;
• and
• coils positioned relative to the housing to generate a field through the rheological fluid;
• and
• an electronic control unit operatively associated with the coils and adapted to change a level of current applied to the coils to adjust an apparent viscosity of the rheological fluid to actively change the damping characteristics of the one or more controllable mounts, wherein the position of each of the two controllable mounts on the frame is known by the electronic control unit, wherein the electronic control unit includes instructions to selectively adjust the apparent viscosity of the rheological fluid of each of the two controllable mounts to actively minimize pitch and roll motion of the cab.

A machine comprising:

• a frame;
• an operator cab supported by the frame;
• one or more passive mounts operatively connecting the operator cab to the frame;
• one controllable mount operatively connecting the operator cab to the frame, the controllable mount including:
• a housing;
• a pin mounted within the housing;
• a rheological fluid within the housing;
• and
• coils positioned relative to the housing to generate a field through the rheological fluid;
• and
• an electronic control unit operatively associated with the coils and adapted to change a level of current applied to the coils to adjust an apparent viscosity of the rheological fluid to actively change the damping characteristics of the controllable mount.