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

Claim 11:
12. A damping control method for a vehicle which damps a sprung of the vehicle by controlling a control force generating device configured to generate a vertical control force for damping the sprung of the vehicle between at least one wheel and a vehicle body portion corresponding to a position of the wheel, wherein
the method comprises:
a step of determining a predicted wheel passage position where the wheel is predicted to pass,
a step of acquiring a first road surface displacement-related value at the predicted wheel passage position and performing a high-pass filter processing on the first road surface displacement-related value,
a step of acquiring a second road surface displacement-related value at the predicted wheel passage position and performing a low-pass filter processing on the second road surface displacement-related value,
a step of calculating 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 high-pass filter processing and the second road surface displacement-related value after low-pass filter processing, and
a step of controlling 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 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, and
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.