초록 ▼

A damping force control device and method controls damping forces of dampers at locations of respective wheels. A first target damping force that inhibits vibrations of a vehicle body in the heave direction is calculated for each of the wheels, based on a single wheel model of the vehicle which empl

A damping force control device and method controls damping forces of dampers at locations of respective wheels. A first target damping force that inhibits vibrations of a vehicle body in the heave direction is calculated for each of the wheels, based on a single wheel model of the vehicle which employs the skyhook theory. A second target damping force that inhibits vibrations of the vehicle body in the pitch direction is calculated for each of the wheels, based on a model of front and rear wheels of the vehicle. A third target damping force that inhibits vibrations of the vehicle body in the roll direction is calculated for each of the wheels, based on a model of left and right wheels of the vehicle. One of the first through third target damping forces that has the greatest absolute value is selected for each of the wheels. The damping force exerted by the damper at the location of each wheel is set to the selected target damping force. Such a damping force control device inhibits the vehicle from making pitch or roll movements without damaging the control performance for attenuating vertical vibrations of the vehicle body.

대표청구항 ▼

1. A damping force control device for controlling damping forces of dampers disposed between a vehicle body and respective wheels of a vehicle, comprising a controller that:calculates, for each of the wheels, a first target damping force that inhibits vibrations of the vehicle body in a heave direct

1. A damping force control device for controlling damping forces of dampers disposed between a vehicle body and respective wheels of a vehicle, comprising a controller that:calculates, for each of the wheels, a first target damping force that inhibits vibrations of the vehicle body in a heave direction, based on a single wheel model of the vehicle; calculates, for each of the wheels, a second target damping force that inhibits vibrations of the vehicle body in a pitch direction, based on a model of front and rear wheels of the vehicle; determines an ultimate target damping force for each of the wheels, based on the calculated first and second target damping forces; and outputs a control signal corresponding to the determined ultimate target damping force to each of the dampers such that a damping force exerted by each of the dampers is set to the determined ultimate target damping force.