Patent ID: 11919353
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 8:
9. A damping control method for a vehicle for damping a sprung portion of the vehicle by controlling an actuator configured to generate a vertical control force for damping the sprung portion between at least one wheel and a portion of a vehicle body that corresponds to a position of the wheel, the damping control method comprising:
determining a predicted wheel passing position where the wheel is predicted to pass;
acquiring road surface displacement related information related to a vertical displacement of a road surface ahead of the wheel;
calculating a target control force for reducing vibration of the sprung portion when the wheel passes through the predicted wheel passing position as a value proportional to a road surface displacement related value having a phase that has been advanced to advance a phase of a transfer function from the road surface displacement related value based on the road surface displacement related information to the target control force by a phase advance amount larger than 0 degrees;
controlling the actuator such that the control force generated by the actuator becomes the target control force when the wheel passes through the predicted wheel passing position;
acquiring the road surface displacement related values at the predicted wheel passing position and in a frequency determination range ahead of the predicted wheel passing position based on the road surface displacement related information; and
increasing the phase advance amount as a major frequency of the road surface displacement related values in the frequency determination range increases.