| 摘要 |
PROBLEM TO BE SOLVED: To realize excellent vibration control performance within a wide frequency range by avoiding marked decrease of the vibration control performance caused by blocking of an orifice passage in a high frequency region with sufficiently ensuring an improving effect in an active vibration control performance based on a resonance action of fluid flowing in the orifice passage in a liquid enclosed type active vibration control device capable of attaining active vibration control efficacy by controlling pressure in a main fluid chamber by exciting an exciting member. SOLUTION: A main fluid chamber 68 in which a wall part is partially composed of a first exciting member 58 and a sub-fluid chamber 70 in which a wall part is partially composed of a second exciting member 61 are communicated to each other by an orifice passage 72 and integrally connected by the first exciting member 58 and the second exciting member 61, and the first and second exciting members 58, 61 are excited by actuators (44, 76, 78, 82, 86, and the like) and an effective piston area of the second exciting member 61 in the sub-fluid chamber 70 is set so as to be larger than that of the first exciting member 58 in the main fluid chamber 68. |
