臺灣博碩士論文加值系統

本論文主要是以模糊理論來設計一個較快穩定收斂的主軸馬達速度控制器。本文所提之方法係首先建立誤差及誤差變化之控制法則知識庫，然後根據實際誤差及實際誤差變化利用控制法則知識庫以模糊推論求得控制命令。控制目的為馬達的速度設定，主要部分包括將速度誤差及速度誤差變化轉為歸屬函數及配合模糊邏輯關係矩陣得到想要輸出的歸屬函數，最後應用解模糊化的過程得到輸出的數值解。
文中以一三相九槽十二極光碟機主軸馬達作為驅動系統之控制對象，設計出模糊控制器，並與電腦 matlab simulink 模擬做比較。實驗結果顯示，模糊控制器不但具備優良的控制特性，亦具有更高的強健性，且本文的結果可提供馬達作穩定度分析。此外，模糊控制器之設計不需要具備系統模型之知識，因此具有簡單與通用的特性。

This thesis presents the design of spindle motor speed controller using fuzzy theorem and provides a method for convergency of stability more rapidly. We established the knowledge base of control rules from the speed error and the change in speed error, and the proposed inference engine used the knowledge base to calculate the control signal according to the actual speed error and the actual change in speed error. The purpose of control is the setting of motor’s speed. We transform the speed error and the change in speed error into membership function and get the membership function of output signal from the operation with fuzzy logic relation matrix, and get the numerical value of output signal from the process of defuzzyfication.
A fuzzy controller of a three-phase, nine-slot and 12-pole spindle motor for CD-ROM drive has been designed. The experimental results are verified with the computer simulation results using the matlab simulink. The experimental results show that the speed controller using fuzzy controller has good performances and is more robust. From the results of this thesis, we can investigate the stability analysis for the spindle motor. The design of fuzzy controller does not require accurate mathematical model of the system and is easy to implement.

中文摘要 Ⅰ
英文摘要 Ⅱ
誌謝 Ⅳ
目錄 Ⅴ
圖目錄 Ⅷ
表目錄 Ⅹ
縮寫及符號對照表 XI
第一章 緒論 1
1.1研究動機 1
1.2研究目的 2
1.3研究方法 3
1.4本論文的貢獻 3
1.5論文內容概述 3
第二章 模糊理論基礎概念 5
2.1前言 5
2.2模糊集合簡介 5
2.2.1模糊集合與明確集合之比較 5
2.2.2常用的歸屬函數 8
2.2.3模糊集合的基本運算 9
2.2.4模糊集合的基本定律與性質 12
2.3模糊關係 13
2.3.1模糊關係的基本運算 14
2.3.2模糊關係的合成 14
2.3.3模糊蘊含 15
2.4模糊控制器 15
2.4.1模糊化介面 16
2.4.2資料庫 17
2.4.3規則庫 17
2.4.4推論引擎 17
2.4.5解模糊化介面 20
第三章 光碟機主軸馬達簡介
3.1主軸馬達的發展 22
3.1.1馬達型態 23
3.1.2轉速的變化 24
3.2主軸馬達的數學模式 25
3.2.1三相軸法 25
3.2.2兩項軸法 27
第四章 主軸馬達模糊速度控制器 30
4.1定義模糊控制器的輸入與輸出變數 30
4.2定義模糊集合與歸屬函數 31
4.3訂定控制規則 33
4.4定義模糊推論的方法 38
4.5解模糊化 41
第五章 實驗與模擬結果 43
5.1開回路實驗 43
5.1.1無載的響應圖 44
5.1.2有載的響應圖 46
5.2軟體模擬 49
5.2.1無載的響應圖 51
5.2.2有載的響應圖 53
5.3閉回路實驗 56
5.3.1無載的響應圖 57
5.3.2有載的響應圖 59
第六章 結論與建議 62
6.1結論 62
6.2建議 62
參考文獻 63
作者簡介 66

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