DAMPER DEVICE

PROBLEM TO BE SOLVED: To provide a damper device whose characteristics can be actively changed.SOLUTION: The damper device includes: a hub 10; a mass body 20 formed in an annular shape, and disposed on an outer side of the hub 10 in a radial direction; a resilient body 30 resiliently connecting the outer peripheral surface of the hub 10 and the inner peripheral surface of the mass body 20; an actuator 0 for changing the resonance frequency f0 of a mass spring system including the mass body 20 and the resilient body 30; a hub vibration detector 60 for detecting the vibration of the hub 10 in a rotational direction; a mass body vibration detector 70 for detects the vibration of the mass body 20 in the rotational direction; and an actuator control unit 80 for controlling the actuator 50 to change the resonance frequency f0 based on a phase difference between the vibration of the hub 10 in the rotational direction detected by the hub vibration detector 60 and the vibration of the mass body 20 in the rotational direction detected by the mass body vibration detector 70.