DYNAMIC DAMPER DEVICE AND CONTROL METHOD FOR DYNAMIC DAMPER DEVICE

摘要

A dynamic damper device (1) is characterized by changing the damper characteristic of a dynamic damper (20) in which a damper mass (31) is coupled to a rotating shaft (13) via an elastic body (41) on the basis of the engine rotation speed of an internal combustion engine (4) that generates power to be transmitted to the rotating shaft (13) and the magnitude of engine torque. Accordingly, the dynamic damper device (1) has the effect of being able to easily perform high-precision damping control and properly reduce vibration. As a result, the dynamic damper device (1) achieves a reduction in NVH and an improvement in fuel efficiency.