Patent ID: 11945273
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 11:
12. A preview damping control method for a vehicle for reducing a vibration of a sprung of the vehicle using:
an in-vehicle control device including a road surface displacement-related information detection device that detects road surface displacement-related information related to a vertical displacement of at least one of a position of a wheel and a position in front of the wheel while the vehicle is travelling, and a first control unit that controls the road surface displacement-related information detection device, and
a preview reference database control device including a storage device that stores a preview reference database and a second control unit that controls the storage device, wherein
the damping force control method comprises:
a step of associating road surface displacement-related information detected by the road surface displacement-related information detection device with position information capable of identifying a position where the road surface displacement-related information was detected and transmitting the associated information to the second control unit,
a step of calculating a road surface displacement-related value related to a vertical displacement of a road surface based on road surface displacement-related information transmitted from the vehicle or other vehicles,
a step of storing a set of data of the calculated road surface displacement-related value and the corresponding position information associated with each other in the storage device as a part of the preview reference database,
a step of performing preview damping control using the road surface displacement-related information and the position information in the preview reference database, and
a step of assuming that a road surface displacement-related value in a predetermined adjacent region located in a direction crossing a traveling direction of the vehicle with respect to a point where the road surface displacement-related information was detected by the road surface displacement-related information detection device is the same as a road surface displacement-related value at the point in at least one of the step of storing the set of data in the storage device and the step of performing the preview damping control,
a step of storing a set of assumed data in which an assumed road surface displacement-related value and position information capable of specifying a position in a predetermined adjacent region are associated with each other for the predetermined adjacent region in the storage device as a part of the preview reference database.