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題 名 | 應用於高科技廠房振動環境之半主動控制吸振器=Semi-Active Vibration Absorber for Vibration Control in High-Teck Fab |
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作 者 | 洪振發; 張淑華; 盧韜仁; 曾嘉豪; 吳庭豪; | 書刊名 | 應用聲學與振動學刊 |
卷 期 | 4:2 2012.12[民101.12] |
頁 次 | 頁35-43 |
分類號 | 446.11 |
關鍵詞 | 減振; 半主動控制; 共振; 非共振; 吸振器; Vibration attenuation; Semi-active control; Resonant; Non-resonant; Vibration absorber; |
語 文 | 中文(Chinese) |
中文摘要 | 本文旨在探討應用於高科技廠房之半主動控制吸振器,以配合其營運操作狀態高微振標準。考慮現代高科技廠房高馬力設施頗多,降低振源之振動控制為首要考量,本文發展「調整勁度以改變振動特性」之吸振器,搭配半主動控制,針對變頻高馬力設施之運轉機械所引起的振動(包含共振與非共振頻率)進行減振。本研究以主系統所承受可變頻率之簡諧激振力下,設計一型半主動控制減振器,不只考慮主系統共振狀態之減振,也考慮非共振狀態下之減振。減振器主體為懸臂樑末端掛載一固定質量塊,透過直流馬達轉動齒輪、帶動懸臂樑兩側齒條即可控制懸臂樑之長度,因而改變掛載質量懸臂樑之自然頻率,待懸臂樑長度改變達要求頻率後,以磁力鎖固定懸臂樑前端部位,以簡化控制上的難度,避免減振器產生額外模態,經實驗證明,本設計可有效地降低共振及非共振狀態之振動量。 |
英文摘要 | In high-tech fabs, the operating frequency of high power facilities should be avoided the resonant to the main structures. For the requirement of high microvibration standard the forced vibration excited by the high power facility at non-resonant condition is also remarkable, and should be also taken into account. In this paper a new type of Semi-Active vibration absorber has been developed. The vibration absorber consists of mass block, cantilever beam, magnet lock system, vibration and distance sensors, controller and servo motor. The mass block is fixed on the tip of cantilever beam, and the control process is driven by a servo motor and a transmit gears. Portion of cantilever was cut in form of gear tracks, which can be driven by servo motor through transmit gear to regulate the length of the cantilever beam, and the natural frequency of absorber will also be regulated. After the mass locates in right position (i.e., the natural frequency of absorber is in assigned condition), the magnetic lock will clamp the cantilever beam. The design has the benefit of simplified control system, and extra unknown vibration modes will be averted. The semi-active vibration control system is designed not only for reduce vibration level in resonant condition, but also considered for vibration attenuation in non-resonant conditions. The results of experiment show that the effectiveness of vibration attenuation for main system in resonant and non-resonant condition is remarkable. |
本系統中英文摘要資訊取自各篇刊載內容。