Cab suspension systems and associated methods of manufacture and use

A suspension system for mounting a vehicle cab to a vehicle chassis, the suspension system comprising:

• a first semi-active suspension component operably positioned between a first front corner portion of the cab and the chassis;
• a second semi-active suspension component operably positioned between a second front corner portion of the cab and the chassis;
• a passive suspension component operably positioned between a rear portion of the cab and the chassis;
• a first sensor positioned to sense an acceleration of the cab;
• a second sensor positioned to sense displacement of the cab relative to the chassis;
• and
• a controller configured to be operably connected to the first and second semi-active suspension components, the first sensor, and the second sensor, wherein—
• the first sensor is configured to provide a first input signal to the controller related to the acceleration of the cab,
• the second sensor is configured to provide a second input signal to the controller related to the displacement of the cab relative to the chassis, and
• the controller includes at least one non-transitory computer readable medium storing instructions that, when executed by the controller, cause the controller to respond to the first and second input signals by (a) determining a cab velocity based at least in part on the acceleration of the cab, (b) determining a suspension velocity based at least on part on the displacement of the cab relative to the chassis, and (c) changing a damping characteristic of at least one of the first and second semi-active suspension components based at least in part on a product of the cab velocity and the suspension velocity.