| 研究生: |
葉純妤 Yeh, Chun-Yu |
|---|---|
| 論文名稱: |
利用時間自動機合成操作步驟之案例探討 Case Studies of Generating Operating Procedures Based on Timed Automata |
| 指導教授: |
張珏庭
Chang, Chuei-Tin |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 化學工程學系 Department of Chemical Engineering |
| 論文出版年: | 2020 |
| 畢業學年度: | 108 |
| 語文別: | 中文 |
| 論文頁數: | 239 |
| 中文關鍵詞: | 時間自動機 、批次反應製程 、反應蒸餾塔開俥操作 、串聯蒸餾塔開俥操作 、動態模擬 |
| 外文關鍵詞: | timed automata, batch reactor, reactive distillation, startup operation, distillation sequence, dynamic simulation |
| 相關次數: | 點閱:109 下載:6 |
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在化學製程設計的工作中,過去習慣依賴人為經驗來制定操作步驟,為了減少在制定過程中失誤之發生,同時顧及操作的效率、安全性與成本,本研究將利用UPPAAL自動機軟體為系統中的元件建造模型,運用專業知識與操作經驗設計控制規範,經自動機網路同步運行後產生操作步驟,並進行動態模擬。本研究透過以下三個案例展現此方法的應用過程,過去曾以非時間自動機模型合成批次反應器的操作步驟,但缺乏時間變數的利用,本研究遂改以時間自動機建模,以增加模型的彈性;也曾有合成單一蒸餾塔的開俥步驟,本研究以此案例為基礎,延伸出串聯蒸餾塔系統,以及改良反應蒸餾塔案例的開俥步驟。具體的工作有(1)建造完整的自動機網路,包括一般元件的非時間自動機模型、程序單元的時間自動機模型與控制規範自動機模型;(2)劃分操作階段並產生各階段的路徑圖;(3)將路徑圖整合成順序功能圖(SFC)形式;(4)利用ASPEN Plus Dynamics進行模擬驗證操作步驟的可行性,並進行經濟評估,找出具優勢之選擇。
In designing the chemical processes, the operating procedures have often been generated manually according to experiences. To reduce the manual errors in performing this task and, at the same time, take into account of operational efficiency, safety, and cost, a different approach is adopted in the present study. The system components and control specifications are first modelled with automata on the basis of engineering knowledge and operation experience. The operating procedures are generated by synchronizing of all automata mentioned above with the software UPPAAL and then validated in dynamic simulation studies using ASPEN PLUS DYNAMICS.
The proposed method is illustrated with three examples. In the past, the operating procedures for a batch reactor system have been synthesized based on untimed automata. In the present work, the timed automata are used to model the same process so as to enhance model flexibility. The operating procedures for the startup operations of a single distillation column have also been synthesized in the past. The present study has extended this work to two distillation columns connected in series, and improved the automata for modeling the reactive distillation system. The specific works presented in this theses include: (1) building a complete network of automata models, which include the untimed automata for the simple components, the timed automata model for the processing units and control specifications; (2) dividing operations procedures into several stages and generating the embedded traces of each stage; (3) summarizing all traces with a sequential function chart (SFC); (4) verifying the corresponding procedures with Aspen Plus Dynamics.
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