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作者(中文):何宗翰
作者(外文):Ho, Zonghan
論文名稱(中文):以類神經網路設計與實現伺服器散熱系統溫度控制器
論文名稱(外文):Design and Implementation of Temperature Controller for Server Cooling System by Neural Network
指導教授(中文):陳榮順
指導教授(外文):Chen, Rongshun
口試委員(中文):杜佳穎
陳宗麟
口試委員(外文):Jiaying Tu
Tsunglin Chen
學位類別:碩士
校院名稱:國立清華大學
系所名稱:動力機械工程學系
學號:101033543
出版年(民國):103
畢業學年度:102
語文別:中文
論文頁數:78
中文關鍵詞:類神經網路逆模型控制溫度控制器伺服器散熱系統
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伺服器散熱系統為多輸入多輸出非線性系統(MIMO Nonlinear System),此外每個發熱原件與風扇間也有耦合效應存在,造成此系統難以做確切的流場分析與系統鑑別,其真實情況往往會與模擬結果而有所出入。目前產業界以PID法則來控制伺服器內的發熱元件之溫度,加上以權重表來設定控制風扇與發熱元件之間的影響程度來達到系統輸入與輸出間的效能分配。由於系統趨於複雜而無法得出其數學模型,此控制方式雖能有效解決伺服器的散熱問題,但工程師需要花上龐大的時間來設定這些參數與測試。
本研究以類神經網路(Neural Network,NN)來設計控制器,透過未知系統的真實輸出與輸入來訓練類神經網路內部的權重值(Weighting)與偏權值(Bias),使其對伺服器散熱系統的反函數做函數逼近(Approximate Functions),訓練完成的類神經網路為類神經網路逆模型(Neural Network Inverse Model,NNIM)並具有伺服器散熱系統溫度控制器的功能。測試結果顯示其不但能使發熱元件在三種不同的操作條件下收斂到設定溫度,在動態操作條件下也能使溫度在短時間內收斂回到設定溫度上,顯示其具有在不同操作條件下的適應性。
目錄
摘要 I
致謝 II
目錄 III
圖目錄 VI
表目錄 IX
第一章 緒論
1.1 研究背景與動機
1.2 文獻回顧
1.3 本文架構
第二章 伺服器散熱系統
2.1 PWM風扇技術
2.2 控制平台介紹
2.3 伺服器散熱控制目的
2.4 系統耦合問題與測試
第三章 控制器原理與設計
3.1 類神經網路
3.1.1 基礎模型
3.1.2 基礎架構
3.1.3 學習法則
3.2 類神經網路逆模型控制
3.2.1 訓練與函數逼近
3.2.2 模型與架構
3.2.3 倒傳遞學習演算法
3.2.4 類神經網路控制器
第四章 實驗平台與設備介紹
4.1 實驗硬體設備
4.1.1 伺服器模型
4.1.2 電源供應器與資料擷取器
4.1.3 控制卡
4.2 軟體介紹
4.2.1 MATLAB
4.2.2 LabVIEW
4.3 實驗平台架設
第五章 實驗與結果討論
5.1 類神經網路逆模型之訓練與測試
5.2 仿真伺服器散熱控制器測試
第六章 結論與未來工作
6.1 結論
6.2 未來工作
參考文獻
參考文獻
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