Patent ID: 6898501

Claim:
In a work vehicle comprising a chassis, an operator's cab disposed above the chassis and an active cab suspension system, an apparatus for determining when a component of the work vehicle experiences vibration above a predetermined threshold and providing an indication when the vibration is above the predetermined threshold, the apparatus comprising: a sensor supported by the chassis and configured to sense the bumpiness of terrain proximate to the work vehicle and to develop a first signal indicative of the vibration in the component caused by the bumpiness; a signal processor coupled to the sensor and configured to develop, in response to the first signal, a second signal indicative of whether the vibration experienced by the component is above the predetermined threshold; and an apparatus coupled to the signal processor and configured to provide, in response to the second signal, an increase in the gain of the active cab system to transmit vibration to the cab when the vibration attributable to the bumpiness of the terrain is above the predetermined threshold.