Taking the CF700 tractor as research object,design and build up tractor vehicle vibration acceleration test system,measure tractor front and rear axle vertical acceleration as well as seats and cabin floor vertical,transverse and longitudinal vibration acceleration. Seats and cabin floor position joint acceleration RMS are calculated,and vertical and pitching angle vibration acceleration and PSD of tractor centroid are obtained through tractor geometric relation. The results show that the tractor vibration ...