Vibration damping device and electrically driven actuator

An electrically driven actuator between a fixed side and a movable side of an aircraft and moving linearly in an axial direction which is a direction toward the movable side opposite to the fixed side comprising:

• a vibration damping device;
• and
• an electrically driven unit operated by using electricity,
• wherein the vibration damping device includes
• a vibration absorbing unit provided between a first support and a second support provided to face the first support, and expanding and contracting by using electricity,
• a measurement unit that measures vibrations of the second support, and
• a control unit that electrically controls the vibration absorbing unit to cancel the vibrations of the second support which are measured by the measurement unit, and
• wherein the electrically driven unit includes
• a housing provided on a fixed side,
• a shaft movable in the axial direction which is a direction toward a movable side opposite to the fixed side with respect to the housing, and
• a drive unit provided between the housing and the shaft, and driving the shaft with respect to the housing.