研究生: |
吳家銘 Chia-ming Wu |
---|---|
論文名稱: |
3C導線製程用高頻火花機之研製 Development of High-Frequency Spark Tester for 3C Cable Production Lines |
指導教授: |
張宏展
Hong-chan Chang |
口試委員: |
吳瑞南
Ruay-nan Wu 郭政謙 Cheng-chien Kuo |
學位類別: |
碩士 Master |
系所名稱: |
電資學院 - 電機工程系 Department of Electrical Engineering |
論文出版年: | 2009 |
畢業學年度: | 97 |
語文別: | 中文 |
論文頁數: | 68 |
中文關鍵詞: | 昇降壓轉換器 、半橋轉換器 、數位信號處理器 |
外文關鍵詞: | buck-boost converter, half-bridge converter, digital signal processor |
相關次數: | 點閱:304 下載:3 |
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本文旨在研製3C導線製程用之高頻火花機。此系統涵蓋高頻高壓產生器、珠鏈電極、放電訊號擷取及栓鎖電路、數位控制器及控制介面等五大部分。於高頻高壓產生器,分為前級昇降壓式直流對直流功率轉換電路、後級半橋諧振濾波電路以及變壓器。前級昇降壓電路主要作為直流對直流之轉換,利用開關切換之責任週期達到輸出電壓可調之目的;後級半橋諧振濾波電路主要作用是將直流轉換成高頻交流方波,再藉由LC之諧振濾波電路,而呈現一高頻弦波,再經由變壓器將電壓昇壓並作隔離。放電信號擷取及栓鎖部分,主要是擷取放電時所產生之放電電流信號並進行判斷分析,再經由栓鎖電路將結果栓鎖,以便DSP檢測放電訊號並作有效處理。數位控制器部分,採用TI生產之數位信號處理器,作為控制核心,經由數位信號處理器之優越控制與運算能力,可準確地偵測放電訊號並快速地處理、分析及檢測線材於生產過程中的瑕疵。最後,藉由人機橾控介面,以利於系統操作與監控。本研究已順利研製出可於3C導線製程中,進行絕緣檢測之高頻火花原型機,將可增進線材生產的品質管制。
The purpose of this thesis is to design a high-frequency spark tester for 3C products cables. The system includes high-frequency high-voltage generator, bead chain electrodes, discharge signal acquisition and lock circuits, digital controller and control interface. The high-frequency high-voltage generator is composed of buck-boost DC-DC converter circuit, half-bridge resonant converter circuit, and transformer. The buck-boost converter uses pulse width modulation technology to achieve the regulation of output voltage. The half-bridge resonant converter transfers dc voltage to high-frequency square-wave ac voltage, and then let it through the LC resonant filter circuit to get a high frequency sinusoidal waveform output. The transformer is used to elevate the voltage level and to provide electrical isolation. The function of the discharge signal acquisition and lock circuit is to acquire and lock the discharge signal in order that the digital signal processor (DSP) can handle it effectively. The digital controller employing the DSP of Texas Instruments is the control center of the spark tester. The DSP can detect discharge signal accurately and check the fault of the isolation of cables because the control and the calculation ability of the DSP is superior. Finally, the man-machine interface is used to operate and monitor this system. The system is built to detect insulation failure of 3C cables in production lines, and to enhance quality control of 3C cables production.
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