Patent ID: 11884118
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A damping control apparatus for a vehicle which comprises:
a control force generating device configured to generate a vertical control force for damping a sprung of the vehicle between at least one wheel and a vehicle body portion corresponding to a position of the wheel;
an electronic control unit configured to control the control force generating device; and
a road surface displacement-related information acquisition device configured to acquire road surface displacement-related information related to a vertical displacement of a road surface, wherein
the electronic control unit is configured to:
determine a predicted wheel passage position where a wheel is predicted to pass,
perform a high-pass filter processing on a first road surface displacement-related value,
perform a low-pass filter processing on a second road surface displacement-related value,
calculate a target control force for reducing a vibration of the sprung when the wheel passes through the predicted wheel passage position based on a sum of the first road surface displacement-related value after the high-pass filter processing and the second road surface displacement-related value after the low-pass filter processing, and
control the control force generating device so that a control force generated by the control force generating device when the wheel passes through the predicted wheel passage position becomes the target control force,
the first and second road surface displacement-related values are two different road surface displacement-related values among a road surface displacement-related value acquired based on road surface displacement-related information stored in a storage device that stores road surface displacement-related information acquired based on a vertical motion state quantity of the vehicle or other vehicles when the vehicle or the other vehicles travels in association with the information of a position where the vertical motion state quantity is detected, a road surface displacement-related value calculated by a calculation unit based on the vertical motion state quantity of the vehicle, and a road surface displacement-related value acquired by a preview sensor that acquires a road surface displacement-related value in front of the vehicle,
the second road surface displacement-related value has a higher possibility that a position where a control force corresponding to the target control force is generated misaligns with the predicted wheel passage position as compared with the first road surface displacement-related value, and
the road surface displacement-related information acquisition device includes at least two devices for acquiring the first and second road surface displacement-related values among the storage device, the calculation unit, and the preview sensor.