Patent ID: 11897302
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 pair of road surface displacement-related information detection devices that detects road surface displacement-related information related to a vertical displacement of at least one of positions of left and right wheels and positions in front of the left and right wheels, while the vehicle is traveling, and a first control unit that controls the road surface displacement-related information detection devices, 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 preview damping control method comprises:
a step of associating road surface displacement-related information detected by the road surface displacement-related information detection devices 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 value and the position information in the preview reference database, and
a step of assuming that an in-phase component of the road surface displacement-related values at two points corresponding to the left and right wheels is the same as a road surface displacement-related value at a point adjacent to one of the two points in a direction crossing a traveling direction of the vehicle in at least one of the step of storing a set of data in the storage device and the step of performing the preview damping control.