Patent ID: 11890909
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A vibration damping control apparatus for a vehicle, comprising:
a speed obtainment section configured to obtain information regarding speed of the vehicle;
a control force generating apparatus configured to generate control force in a vertical direction for damping vibration of a sprung portion of the vehicle, the control force being applied between at least one wheel and a portion of a body of the vehicle, which portion corresponds to a position of the wheel; and
a control unit configured
to compute a predicted route that the wheel is predicted to pass,
to obtain first data from road surface information which is data in which relationships are established among position information representing a position on a road surface, a road surface displacement related value obtained when a measurement vehicle traveled and passed the position on the road surface, and speed information representing a speed of the measurement vehicle at the time when the measurement vehicle traveled and passed the position on the road surface, the first data representing a time series change of the road surface displacement related value on the predicted route,
to obtain, from the first data, as preview information, the road surface displacement related value at a predicted passage position that the wheel is predicted to pass after elapse of an advance read time from a present point in time,
to compute a target control force which is a target value of the control force by using the preview information, and
to execute preview vibration damping control for controlling the control force generating apparatus on the basis of the target control force,
wherein the control unit is further configured
to obtain the speed Information at the predicted passage position from the road surface information,
to execute a first process on the first data in the case where the speed of the vehicle at the present point in time is higher than a speed represented by the speed information, the first process being a low-pass filter process for reducing or removing components within a frequency band higher than a first cutoff frequency, and
to obtain the preview information from the first data having been subjected to the first process.