研究生: |
吳若華 Wu, Jo-Hua. |
---|---|
論文名稱: |
動態Quasi MMSE回饋控制器之建構與績效分析 Control Performance of Dynamic Quasi Minimum MSE Run-to-Run Controller |
指導教授: |
曾勝滄
Tseng, Sheng-Tsaing |
口試委員: |
徐南蓉
Hsu, Nan-Jung 汪上曉 Wong, Shan-Hill |
學位類別: |
碩士 Master |
系所名稱: |
理學院 - 統計學研究所 Institute of Statistics |
論文出版年: | 2017 |
畢業學年度: | 105 |
語文別: | 中文 |
論文頁數: | 55 |
中文關鍵詞: | 批次控制 、動態系統 、Quasi MMSE控制器 、製程干擾 、轉換函數模型 、回饋控制 |
外文關鍵詞: | run-to-run control, dynamic system, Quasi MMSE controller, process disturbance, Transfer function model, feedback control |
相關次數: | 點閱:6 下載:0 |
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批次控制 (run-to-run control) 在半導體生產製程中扮演極重要的製程監控角色。當生產製程的投入變數對產出變數具有遷移效應 (carry-over effect) 的 transfer function (TF) model 時,文獻上有quasi MMSE控制器被提出來監控此類動態生產製程,唯此控制器僅在製程干擾項服從 IMA(1,1) 模型下被建構出來。因此當製程干擾項服從一般化的 ARIMA(p,1,q) 模型時,其製程的穩定條件及total mean square error (TMSE) 之表現並不甚理想。針對此缺點,本論文提出修正的quasi MMSE動態回饋控制器,並分別推導出此控制器下的製程產出公式、製程穩定條件及製程產出之漸近分配。最後,當實際製程為二階動態模型 TF(2,2) 且其干擾項服從 ARIMA(2,1,2) 時,本文亦探討此控制器與現存控制器之績效表現;結果顯示,本文提出的控制器之優點是不僅能將製程產出值更快速地調整到目標值,同時亦可使製程的TMSE大幅降低。
Run-to-run (R2R) control plays a vital role in monitoring or adjusting the integrated-circuit (IC) manufacturing process. Recently, a dynamic quasi MMSE (qMMSE) controller has been proposed in literature to address R2R problem when the process dynamics and disturbance dynamics exit simultaneously. The controller, however, was constructed only based on a transfer function (TF) model with the process disturbance follows an IMA(1,1) model. Therefore, its control performances on stability conditions and total mean square error (TMSE) may not perform satisfactorily when the true process disturbance follows a general ARIMA(p,1,q) model. To overcome this difficulty, this article first proposed a modified dynamic quasi MMSE (qMMSE) controller and then, the corresponding long-term stability conditions and its limiting distribution are derived. Furthermore, when the process I-O model follows a second-order transfer function (TF) model with the ARIMA(2,1,2) disturbance, we also compared the control performance of our proposed controller with that of existing controllers by using a simulation study. The results demonstrates that using wrong controllers usually cause serious effects on the performances of stability conditions and total mean square error (TMSE).
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