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2007 Fiscal Year Final Research Report Summary

Vibration Suppression of a WashingMa.chine Using Discontinuous Spring Characteristics And a Ball Balancer

Research Project

Project/Area Number 18560228
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Dynamics/Control
Research InstitutionNagoya University

Principal Investigator

ISHIDA Yukio  Nagoya University, Departmentof Engineering, Professor (10092991)

Co-Investigator(Kenkyū-buntansha) INOUE Tsuyoshi  Nagoya University, Deparbnentof Engineerin, Asscoiate Professor (70273258)
JUN Liu  Nagoya University, Departmentof Engineering, Assistant Professor (70345924)
IKEDA Takashi  Shimane University, Department of Engineering, Professor (50115523)
NAGASAKA Imao  Chubu University, Department of Engineering, Associate Professor (60102779)
Project Period (FY) 2006 – 2007
KeywordsRotating Machinery / Vibration Suppression / Washing Machine
Research Abstract

A vibration suppression device using discontinuous spring characteristics was applied to a practical vertical two-drum type washing machine. The effect of this device was investigated by experiments. By investigating various conditions, a most appropriate type was Sound. Analytical model was derived from this experimental set-up and the results of theoretical analysis was compared with the experimental results were compared- Steady-state operation and nonstationary oscillation with a constant acceleration are compared. As the results, the proposed method was effective.
Next, a ball balancer was used together with the above mentioned device with discontinuous spring characteristics. Discontinuous spring characteristics is effective to eliminate resonance and a ball balancer is effective to suppress vibrations above the major critical speed.This method was also investigated by experiments. It was verified that the amplitude at the main resonance are suppressed to a specified level and the amplitude became almost zero in the post critical speed range as expected effect.

  • Research Products

    (2 results)

All 2007

All Presentation (2 results)

  • [Presentation] 自動ボールバランサと不連続ばねを併用した洗濯・脱水機の制振2007

    • Author(s)
      劉 軍, 石田 幸男
    • Organizer
      日本機械学会D&D2007講演会
    • Place of Presentation
      広島大学工学部
    • Year and Date
      2007-09-26
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] Vibration Suppression of a Washing Machine Using Discontinuous Spring Charaduristics And a Ball Balancer2007

    • Author(s)
      Jun, Liu, Yukio, Ishida
    • Organizer
      D&D Conference 2007, Japan Sodety of Mechbanical Engineers
    • Place of Presentation
      Hiroshima Univerity, Department of Engineering
    • Year and Date
      2007-09-26
    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2010-02-04  

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