| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a device capable of actively suppressing vibration inputted into a vehicle body through an engine mount with no collision between a case and an inertia mass. <P>SOLUTION: The vibration reducing device 100 includes, between an engine 1 and a car body, a rod rigid body 10 which is supported through elastic bodies 12c and 13c with resonance frequencies set to be lower than the engine rigid body resonance frequency, an elastic component 16 which is provided to the rod rigid body 10 and deformed by a force acting in the axial direction of the rod rigid body 10, an inertia mass 15 which is supported by the elastic component 16, an actuator 17 which generates a force proportional to the axial direction speed of the rod rigid body 10 and makes the inertia mass 15 reciprocate in the axial direction of the rod rigid body 10. In an engine rotational speed where at least an exciting force frequency of a basic order of engine rotation agrees with the resonance frequency of the inertia mass 15, a gain is lowered. <P>COPYRIGHT: (C)2012,JPO&INPIT |
