臺灣博碩士論文加值系統

光碟機產業乃為現今電腦周邊儲存媒體中相當熱門的產業之一，而本論文主題即在進行光碟機尋軌與主軸伺服控制晶片之設計。
在本實驗中，利用美商Altera公司所生產之APEX20K複雜式可程式化邏輯晶片來模擬光碟機機台中原有之伺服晶片。並將短程尋軌、長程尋軌、主軸馬達等三項伺服系統以階層式模組建構於APEX20K中並配合DVD實驗平台加以驗證。
本論文已達成取代其原有之跨軌伺服系統及主軸馬達伺服系統，在長程尋軌中並藉由二次元規劃之理論方法建構一合適之速度曲線以降低搜尋時間，而在等線速度模式下，主軸馬達轉速之變化亦配合自行設計之長跳軌功能進行整合測試完成，成功達成等線速度之主軸馬達伺服控制。

In this thesis, a CPLD-based servo controller for a DVD-player is implemented and verified through experiments.
Long-seek servo for moving pickup head at long distance, short-seek for precise positioning of the pickup head and spindle servo for rotating disks are implemented in a CPLD. In test bench, these three servo blocks are realized as CPLD modules for further experimental validity.
In long-seek servo, response of 10,000 tracks jump is performed with a suitable electronic damper and velocity profile, while in short-seek servo, the precise positioning is performed and the prescribed velocity profile is followed. In spindle servo at CLV mode, data PLL and spindle PLL are performed in accordance with the long-seeking module. The variation of rotational speed is also presented for verification.

中文摘要 I
Abstract II
致謝辭 III
Contents IV
Lists of Figures VII
Lists of Tables IX
Chapter 1 Introduction 1
1.1 Background 1
1.2 Motivations 3
1.3 Literature Survey 6
1.4 Organization of the Thesis 8
Chapter 2 The Optical Disk Servo Drive System 9
2.1 Servo Control Systems in a DVD Drive 9
A. Focusing Servo System 12
B. Tracking Servo System 12
C. Seeking Servo System 13
D. Spindle Motor Servo System 13
2.2 Spindle Servo Control System in a DVD Drive 14
A. Data Slicer 16
B. Data Phase-Locked Loop 17
C. Spindle Phase-Locked Loop 18
2.3 Long-Seek Servo Control System in a DVD Drive 18
A. Block Diagram of Long-Seek Servo Control System 19
B. Dual-stage Actuators 20
2.4 Short-Seek Servo Control System in a DVD Drive 23
A. Block Diagram of Long-Seek Servo Control System 23
B. Parallel Phase-Lead Phase-lag Controller with Multi-Sampling-Rate 24
Chapter 3 The Experimental Setup 27
3.1 The Test Bench 28
A. Mechanisms 29
B. PCBA 29
C. Introduction of the CPLD 30
3.2 The Interface Circuits 30
A. 8255 Input/Output Interface Cards 30
B. Feedback Signal from Servo Chip 31
C. Low-Pass Filter for Control Effort 32
D. Data Slicer 32
3.3 Spindle Servo Module 33
A. Data Slicer 34
B. Data PLL 35
C. Spindle PLL 39
3.4 Long-Seek Servo Modules 40
A. Track Jump Counter 41
B. Velocity Estimator 44
C. Velocity Profile 44
D. Electronic Damper 45
E. Control Effort Generator 47
3.5 Short-Seek Servo Modules 48
A. Track Jump Counter 49
B. Velocity estimator 49
C. Velocity Profile 50
D. Controller 52
Chapter 4 Experimental Results 57
4.1 Experimental Results of Long-Seek Servo System 57
4.2 Experimental Results of Short-Seek Servo System 62
4.3 Experimental Results of Spindle Servo System 64
4.4 Discussion of Experimental Results 69
Chapter 5 Summary and Recommendations 71
5.1 Summary and Contribution of the Thesis 71
5.2 Recommendations for Future Study 72
References 73
Appendix A-1 Introduction of QuartusII 74
Appendix A-2 Introduction of APEX20K 75
Appendix B-1 TRO from D/A Converter 76
Appendix B-2 FMO and DMO from 3rd Low-Pass Filters 77
Appendix B-3 Circuits for Data Slicer 78

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[2] Chin-Shou Huang, On the Seek-Servo Controller Parameter Optimization of an Optical Disk Drive, Master’s Thesis, Department of Power Mechanical Engineering, National Tsing Hua University, Taiwan, 2000.
[3] Shin-Po Wang, Design and Implementation of a Spindle Servo Control Chip for CD-ROM, Master’s Thesis, Department of Power Mechanical Engineering, National Tsing Hua University, Taiwan, 2000.
[4] Ming-Hung Huang, The Modular Design and Implementation of a Servo Control Chip, Master’s Thesis, Department of Power Mechanical Engineering, National Tsing Hua University, Taiwan, 1999.
[5] Jian-Ming Huang, Design and Implementation of a Short-Seek Servo Chip for CD-ROM, Master’s Thesis, Department of Power Mechanical Engineering, National Tsing Hua University, Taiwan, 2001.
[6] Chang-Hui Liu, Design and Implementation of the Time-Optimal Trajectory for a Seek-Servo of Optical Disk Drive, Master’s Thesis, Department of Power Mechanical Engineering, National Tsing Hua University, Taiwan, 2001.
[7] 黃仁宏, 光碟機跨軌漏數偵測與粗調伺服系統之研究, Master’s Thesis, Department of Electric and Control Engineering, National Chiao Tung University, Taiwan, 1998.
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