| 主权项 |
1. An absorber system for a vehicle, comprising:
a cylinder comprising: a housing configured to store working fluid; a piston slidably provided in the housing; and a rod whose one end portion is coupled to the piston and another end portion extends from the housing, the cylinder being provided so as to connect a sprung portion and an unsprung portion of the vehicle to each other, the cylinder being extended and compressed by relative movement of the sprung portion and the unsprung portion; a damping force generator configured to generate a damping force with respect to an operation of the cylinder in extension thereof and an operation of the cylinder in compression thereof by providing resistance to a flow of the working fluid which is caused by the extension and compression of the cylinder, the damping force generator comprising a solenoid and being capable of changing a magnitude of the damping force to be generated, based on a current supplied to the solenoid; and a controller configured to control the damping force generator to control the damping force with respect to the operation of the cylinder in extension thereof and the operation of the cylinder in compression thereof, the controller comprising:
a reference control amount determiner configured to determine a reference control amount as a reference of a target control amount which is a target of a control amount for controlling the damping force with respect to the operation of the cylinder in extension thereof and the operation of the cylinder in compression thereof, the reference control amount serving as the reference in determination of the target control amount;a target control amount determiner configured to determine the target control amount to the reference control amount for one of the operation of the cylinder in extension thereof and the operation of the cylinder in compression thereof and determine the target control amount to a value obtained by multiplying the reference control amount by an extension-compression gain for another of the operation of the cylinder in extension thereof and the operation of the cylinder in compression thereof, the extension-compression gain being based on a ratio between a damping force to be achieved in the operation of the cylinder in extension thereof and a damping force to be achieved in the operation of the cylinder in compression thereof; andan extension-compression gain changer configured to change the extension-compression gain in at least one of a driving-stability-emphasized situation in which driving stability of the vehicle is to be emphasized and a ride-comfort-emphasized situation in which ride comfort of the vehicle is to be emphasized. |
