Patent ID: 8725379

Claim:
A vehicle body vibration damping control device for suppressing vibrations of a vehicle body, which is a sprung mass of the vehicle on which road wheels are suspended via a suspension unit, through a corrective control of a road wheel braking or driving force, the vehicle body vibration damping control device comprising: a vehicle body vibration estimation section configured to: estimate a first pitching vibration of the vehicle body based on requested braking or driving torque, estimate a first bouncing vibration of the vehicle body based on the requested braking or driving torque, estimate a second pitching vibration of the vehicle body based on speeds of road wheels, and estimate a second bouncing vibration of the vehicle body based on the speeds of road wheels; a priority level setting section configured to: set suppression priority levels for each of the first pitching vibration, the first bouncing vibration, the second pitching vibration, and the second bouncing vibration, set the suppression priority levels for the first and second pitching vibrations to be higher than the suppression priority levels for the first and second bouncing vibrations, and set the suppression priority level for the second pitching vibration to be higher than the suppression priority level for the first pitching vibration; and a damping purpose braking-or-driving force correction quantity calculation section configured to determine a damping purpose braking or driving force correction quantity to suppress the vibrations of the vehicle body, the braking or driving force correction quantity being determined based on the suppression priority levels set by the priority level setting section, such that suppression of pitching vibrations is prioritized over suppression of bouncing vibrations, and suppression of a pitching vibration caused by forward or backward direction external disturbance is prioritized over suppression of a pitching vibration caused by requested braking or driving torque variation.