English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 64745/64745 (100%)
造訪人次 : 20472089      線上人數 : 324
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋


    請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/2675


    題名: 液晶電視前框動態分析與結構改善;DYNAMIC ANALYSIS AND STRUCTURAL IMPROVEMENT FOR THE BEZEL OF LCD TV
    作者: 陳彥仲;Yen-Chung Chen
    貢獻者: 機械工程研究所碩士在職專班
    關鍵詞: 振動;噪音;結構改善;structural improvement;noise;vibration
    日期: 2006-06-29
    上傳時間: 2009-09-21 11:53:22 (UTC+8)
    出版者: 國立中央大學圖書館
    摘要: 本文的主要目的為探討液晶電視因喇叭聲壓激振的影響,而產生出的振動問題,並尋找解決方案。由於液晶電視的前框無法與液晶面板完全拘束,當喇叭聲壓激振而引起系統共振時,液晶電視的前框會與液晶面板碰撞而產生噪音問題。本文以LabVIEW為訊號擷取控制介面,以取得衝擊鎚與加速規在液晶電視前框各量測點的訊號,在經訊號轉換與運算後,可以得到各量測點的頻率響應。找出系統中發生最大頻率響應的位置,針對此位置進行結構的改良設計,使得系統的頻率響應能夠有效的降低,以降低液晶電視因喇叭聲壓的影響,所引發的噪音問題。 The main purpose of this thesis is to study the vibration problem of a TFT-LCD TV caused by the sound of the loudspeaker and to look for the solution for reducing the corresponding noise due to resonance. Since the TV bezel couldn’t be totally constrained with the TFT-LCD panel, it will collide with the TFT-LCD panel and emerge the vibration when the loudspeaker shakes. This thesis regards LabVIEW as the interface of signal analysis and signal processing to acquire the signal of the impact hammer and the accelerometer on every measure points of the TV bezel. By the signal processing of LabVIEW to acquire the frequency responses and find out the position where the maximum occurs. Finally, the design of TV was modified based on the measurement data. The frequency response of the TV set was improved and the associated noise was also reduced.
    顯示於類別:[機械工程學系碩士在職專班 ] 博碩士論文

    文件中的檔案:

    檔案 大小格式瀏覽次數
    0KbUnknown1017檢視/開啟


    在NCUIR中所有的資料項目都受到原著作權保護.

    社群 sharing

    ::: Copyright National Central University. | 國立中央大學圖書館版權所有 | 收藏本站 | 設為首頁 | 最佳瀏覽畫面: 1024*768 | 建站日期:8-24-2009 :::
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回饋  - 隱私權政策聲明