| 摘要 |
PURPOSE: A bracket equipped with a dynamic damper, using MR(Magneto-rheological) fluids is provided to meet a complex characteristic capable of efficiently shutting off high frequency vibration component while having efficient support stiffness at low frequency. CONSTITUTION: A bracket(10) equipped with a dynamic damper(20), using MR fluids(21) comprises a rubber case(22) installed to a side of the side, MR fluids stored in the case, a housing(23) connected to the case, and an electromagnet(24), installed inside the housing. The electromagnet receives voltage according to the output value from an ECU(40) of receiving a signal from an acceleration sensor(30) and then calculating vibration value, and gives magnetic field to the MR fluids. The bracket can be simplified, lightened, and miniaturized, since just the electromagnet for giving magnetic field, to control damping force, is added without using many machine elements.
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