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研究生:羅貫中
研究生(外文):LO, KUAN-CHUNG
論文名稱:基於IEEE 1588協定具回授控制之精確時間同步系統開發
論文名稱(外文):Development of a Precise Time Synchronization System Based on IEEE 1588 Protocol with Feedback Control
指導教授:蔡孟伸蔡孟伸引用關係
指導教授(外文):TSAI, MEN-SHEN
口試委員:蔡孟伸呂光欽林金墩
口試委員(外文):TSAI, MEN-SHENLU, KUANG-CHINLIN, JIN-DUN
口試日期:2020-07-15
學位類別:碩士
校院名稱:國立臺北科技大學
系所名稱:自動化科技研究所
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2020
畢業學年度:108
語文別:中文
論文頁數:98
中文關鍵詞:IEEE 1588精確時間同步模糊控制器
外文關鍵詞:IEEE 1588Time synchronizationFuzzy feedback controller
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近年來隨著科技的脈動,時間同步技術被廣泛應用於自動控制、電力網路、傳統工業及醫療救災,提供各獨立系統相同的時間戳及觸發源。高精度的時間戳可在突發事件發生後,更精確的描述事發過程,以利後續解決問題,提高設備的安全性及可靠性。
IEEE 1588時間協定是目前常見的時間同步技術之一,此協定提供亞微秒等級的精確度,常用於量測或控制系統。協定透過乙太網路傳輸封包的方式,不僅降低架設成本,也可為無法接收到GPS訊號的場域如地底或太空提供高精度的時間同步。現今常用於網路基地台、金融交易及海底感測網路。
本論文使用高精度的時間參考源作為主時鐘,採用具備回授控制器的嵌入式開發系統作為從時鐘。透過使用模糊控制器降低因石英震盪器的頻率偏移造成的內部時間誤差。經由Wireshark封包擷取軟體及示波器波形統計以驗證基於IEEE 1588協定的高精度時間同步系統。

Time synchronization technologies have been widely used in automatic control, power network, traditional industry and disaster relief. Time synchronization provides the same timestamp and trigger sources for each independent system. Whenever an emergency occurs, through high-precision timestamp, more accurate core problem can be found to solve the fundamental issue thus improving safety and reliability for the systems. Therefore, time synchronization technologies have become an important foundation for technological progress.
Currently, the most precision protocol for time synchronization technologies is the IEEE 1588. This protocol provides sub-microsecond accuracy for measurement or control systems. The transmission of packets through the Ethernet not only reduces the installation cost, but also provides high-precision time synchronization in fields where GPS signals cannot be received, such as underground or space. Thus, the IEEE 1588 time protocol has been commonly used in network base stations, financial transactions, and undersea sensing networks nowadays.
This thesis uses a high-precision time reference source as the master clock. An embedded system with a feedback control mechanism as the slave clock is developed in this thesis. By utilizing a Fuzzy Controller, the internal time error caused by the frequency drifts of the oscillator is reduced. Wireshark and waveform statistics function provided by an oscilloscope are used for verification.

第 1 章 緒論 1
1.1 背景與動機 1
1.2 論文架構 3
第 2 章 時間同步技術 4
2.1 IRIG時間碼 5
2.2 NTP 9
2.3 IEEE 1588 12
2.4 時間同步技術應用 15
2.4.1 脈衝訊號 16
2.4.2 UNIX時間戳 17
2.4.3 位置檢測 18
第 3 章 IEEE 1588時間同步協定架構 20
3.1 PTP設備時鐘類型 20
3.2 同步機制 30
3.3 訊息格式 35
3.4 回授控制器 44
3.4.1 比例-積分回授控制器 44
3.4.2 模糊回授控制器 45
第 4 章 系統架構設計與實測結果 49
4.1 系統架構設計 49
4.1.1 主時鐘設置 51
4.1.2 透明時鐘設置 57
4.1.3 嵌入式開發板 58
4.1.4 具回授控制器的精密校正架構 60
4.2 系統實測與結果驗證 68
4.2.1 IEEE 1588協定封包驗證 68
4.2.2 秒脈衝訊號偏移驗證 76
第 5 章 結論與未來展望 94
5.1 結論 94
5.2 未來展望 94
參考文獻 96

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