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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/35581

    Title: Vibration control in a drum-type washing machine via magnetorheological fluid (MR) damper
    Other Titles: 磁流變液減振器在滾筒洗衣機振動控制的應用
    Authors: 曹仲達;Chao, Chung-ta
    Contributors: 淡江大學航空太空工程學系碩士班
    田豐;Tyan, Feng
    Keywords: 磁流變液;磁流變液減振器;洗衣機;MR fluid;MR damper;washing machine;ANSYS
    Date: 2009
    Issue Date: 2010-01-11 06:48:38 (UTC+8)
    Abstract: 本論文在滾筒洗衣機的結構方面上呈現了完整的三維多體動態模型。由於在洗衣機減振方面上,大部份的參
    變液減振器本身對電壓的限制(0v ~ 2.25v)來判斷所需要的電壓大小再輸入給磁流變液減振器提供適當的阻
    This paper presents a three-dimensional multibody dynamic model for a washing machine with front loading type
    in details. Owing to most of vibration reduction techniques for washing machines with physical experiments, we present
    the mathematical model for the washing machine completely including the suspension system between the case and the
    basket and the bearing model between the basket and the drum. A drum-type washing machine is operated under varing
    spin-drying stage and load imbalances, so we require varying damping force to reduce the vibration of a washing machine.
    We use low-cost, controllable MR dampers as the suspension system for moderate-force vibration control in a washing
    machine. The response about the vibration of a washing machine was improved with the bearing model between the basket
    and the drum including the planar-universal joint in the front part and the translational-spherical joint in the rear
    part instead of a revolute joint between the basket and the drum. The controller synthesis is to find the moderate
    voltages for MR dampers providing the moderate forces to reduce the vibration of the washing machine. We present a PI
    controller and a voltage algorithm to get the applied voltage for MR dampers in the range between 0v ~ 2.25v.
    From the simulation results, it is clear that the vibrations of the basket and case are suppressed after two MR dampers
    Appears in Collections:[Graduate Institute & Department of Aerospace Engineering] Thesis

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