Active damping device, vehicle, method for controlling active damping device

Abstract

Provided is an active damping device (X) that suppresses vibrations of an object (T) to be damped by utilizing a reaction force generated when an auxiliary mass () is driven by an actuator (). The active damping device (X) includes a stiffness/damping controller () that multiplies the displacement and the operating speed of the actuator () by the stiffness gain (k) and the damping gain (c) and provides feedback of the multiplication result so that the natural frequency of a damping device machine system (X) becomes equal to the excitation frequency (ω) of the object (T) to be damped and the damping device machine system (X) is controlled to have properties of counteracting the damping thereof. The stiffness/damping controller () is configured to adjust the stiffness gain (k) and the damping gain (c) according to the varying excitation frequency (ω). The active damping device (X) capable of suitably suppressing the vibration corresponding to the excitation frequency component even when the excitation frequency varies can thus be provided.