Patent ID: 11912090
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A damping control device for a vehicle having wheels including a front wheel and a rear wheel, the damping control device comprising:
a control force generating device configured to generate a vertical control force for damping a sprung portion of the vehicle between each of the wheels and a portion of a vehicle body that corresponds to a position of each of the wheels;
an information acquirer configured to acquire pieces of road surface displacement related information related to vertical displacements of a road surface at a predicted passing position where each of the wheels is predicted to pass at a timing when a predetermined period has elapsed from a current time, each piece of the road surface displacement related information including at least one of road surface displacements that are the vertical displacements of the road surface at the predicted passing position, a road surface displacement speed that is a time derivative of the road surface displacements at the predicted passing position, an unsprung displacement that is a vertical displacement of an unsprung portion of the vehicle at the predicted passing position, and an unsprung speed that is a time derivative of the unsprung displacement at the predicted passing position; and
a control unit configured to control the control force generating device to change the control force, wherein the control unit is configured to
calculate, as a first control force, the control force for the front wheel when the front wheel passes through the predicted passing position, based on the road surface displacement related information at the predicted passing position of the front wheel,
calculate, as a second control force, the control force for the rear wheel when the rear wheel passes through the predicted passing position, based on the road surface displacement related information at the predicted passing position of the rear wheel,
calculate a combined control force by adding together the first control force and the second control force,
calculate a first final target control force that is a final target value of the control force for the front wheel and a second final target control force that is a final target value of the control force for the rear wheel by distributing the combined control force at a predetermined distribution ratio,
control the control force generating device such that the control force generating device generates the control force that agrees with the first final target control force in the front wheel at the timing when the front wheel passes through the predicted passing position of the front wheel, and
control the control force generating device such that the control force generating device generates the control force that agrees with the second final target control force in the rear wheel at the timing when the rear wheel passes through the predicted passing position of the rear wheel.