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THE AUTOMATIC PARAMETER DESIGN FOR FOCUSING CONTROLLER ON OPTICAL DISK DRIVES 陳韋良、張義芳

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THE AUTOMATIC PARAMETER DESIGN FOR FOCUSING CONTROLLER ON OPTICAL DISK DRIVES

陳韋良、張義芳

E-mail: [email protected]

ABSTRACT

1. MAKE USE OF A SECOND-ORDER SYSTEM TO MEET THE DYNAMIC PROPERTIES OF THE FOCUSING ACTUATOR. IN ORDER TO SIMPLIFY THE DESIGN STEPS AND BE THE AUTOMATION OF THE CONTROLLER DESIGN. 2. MEASURING BY HP35670 DYNAMIC ANALYZER, WE GOT THE DYNAMIC PROPERTIES OF THE COMMERCIAL OPTICAL DISK DRIVES ACTUATOR WITH CURVE FITTING. 3. ACCORDING TO THE DESIGN METHOD OF THE FREQUENCY RESPONSE AND BODE DIAGRAM TO DESIGN A COMPUTER PROGRAM VIA MATLAB TOOLS TO AUTOMATICALLY SELECT EFFICIENT CONTROL PARAMETERS. 4. IN TERMS OF THE SAMPLING RATE AND TUSTIN METHOD, THE PROGRAM WAS TRANSFORMED TO THE Z-DOMAIN.

RESTRICTED BY THE DSP TO EXCHANGE THE PARAMETER TO AVAILABLE NUMBERS AND DOWNLOAD IT TO DSP TO USE. 5. WHEN THE ACTUATOR WORKS AT THE DISK IN 5000 (RPM) AND HAS THE DISTURBANCE FROM SCRAPING, THE CONTROLLER WITH OUR DESIGNED CAN PERFORM BETTER PERFORMANCE

COMPARING WITH THE ONE OF MANUFACTURER'S DESIGNED. IT CAN FOCUS QUICKLY AND REDUCE THE AMPLITUDE OF THE TRANSIENT RESPONSES..

Keywords : CD-ROM, ACTUATOR, FOCUSING, FREQUENCY RESPONSE, AUTOMATION Table of Contents

第一章 緒論 1.1 前言--P1 1.2 文獻回顧--P1 第二章 光碟機伺服控制系統簡介--P4 2.1 聚焦伺服控制--P4 2.2 微調尋軌伺服 控制--P5 2.3粗調尋軌伺服控制--P6 2.4聚焦誤差訊號檢測--P9 2.5尋軌誤差訊號之檢測--P13 第三章 聚焦馬達物理模式的研 究--P15 3.1音圈馬達結構簡介--P16 3.2音圈馬達運作原理--P17 3.3模式推導--P18 第四章 系統鑑別--P25 4.1系統鑑別介 紹--P25 4.2實驗用光碟機硬體架構--P25 4.3作法說明--P27 4.4量測架構--P28 4.5鑑別結果--P29 第五章 控制器的設計--P31 5.1光碟機讀取頭聚焦控制系統--P31 5.2控制器的決定--P33 5.3控制器的設計概念--P36 5.4超前補償器設計流程--P37 第六章  程式製作--P43 6.1使用者介面--P43 6.1.1主畫面部份v44 6.1.2提示文字--P44 6.1.3按鈕--P45 6.1.4規格輸入或輸出--P45 6.1.5 資料擷取與結果輸出--P45 6.2程式操作--P47 6.2.1執行程式--P47 6.2.2顯示DSP參數--P48 6.2.3步階微調--P49 6.2.4微調結 果--P50 6.2.5廠商控制器--P51 6.2.6結果比較--P52 6.2.7開迴路--P53 6.2.8開迴路比較--P54 6.2.9閉迴路--P54 6.2.10閉迴路比 較--P55 6.2.11重新輸入--P56 第七章 控制器的實現及結果--P58 7.1 Matlab自動化程式模擬--P58 7.2自動產生控制器參 數--P60 7.3步階響應比較--P61 7.4廠商的動態響應--P62 7.5超前補償器對系統的影響--P63 7.6頻率響應結果比較--P64 7.7DSP控制器的實現--P66 第八章 結論--P67 參考文獻--P68 附錄--P71

REFERENCES

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參考文獻

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