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研究生: 黃耀德
Yau-De Huang
論文名稱: 廣義史都華平台五軸改良型工具機性能分析與設計程序
Analysis and a Design Procedure of a Generalized Stewart Platform Motion-Base for Machine Tools
指導教授: 彭明輝
Ming-Hwei Perng
口試委員:
學位類別: 碩士
Master
系所名稱: 工學院 - 動力機械工程學系
Department of Power Mechanical Engineering
論文出版年: 2001
畢業學年度: 89
語文別: 中文
中文關鍵詞: 史都華平台平行機構性能分析設計程序五軸工具機
外文關鍵詞: Stewart platform, parallel mechanism, mechanical performance, Design Procedure, 5-axis machine tool
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  • 由於史都華平台(Stewart platform)的性能分析方法不夠完備,尚難以提供完整的構型分析與設計於實際應用上,並且對於奇異點的位置無法確定。本研究以廣義不共平面史都華平台為主要研究對象,研發出一套有系統的平行機構性能分析工具與設計程序,以幫助設計者得到符合設計需求的構型。
    本研究從普魯克座標矩陣奇異值在平行機構上所代表的意義,逐步推究出機械性能指標,並推廣至正交向量分析法則完成設計工具的發展,且獲得如下的好處:

    (1)解決普魯克座標矩陣的物理單位非齊次性問題,讓普魯克座標矩陣奇異值所發展的性能指標,具有更客觀與明確物理意義的性能表示性。並整合性能指標與基底向量正交性分析法則的分析資料,充分掌握連桿指向與設計參數對於性能變化的影響趨勢。

    (2)可以因應在實際工業應用上構型的不同應用狀況,設計出符合特定需求與應用的構型。

    (3)在參數研究的過程中,能夠明確掌握設計規格的特性。並獲得將廣義HEXAPOD構型三軸及五軸性能圖示簡化的方法,增加性能分析的效率。

    (4)提供完整的設計程序。經由本研究所法展的設計工具與程序可以快速地分析與設計平行機構。


    第一章 簡介 1 1.1 史都華平台簡介 1 1.2 問題背景與文獻回顧 3 1.3 研究動機與研究範圍 7 1.4 論文內容概要 9 第二章 機械性能指標與基底向量正交性分析法則 10 2.1 加權機械效能(ADVANTAGE)之性能指標 10 2.1.1 權重矩陣Wr 11 2.1.2 權重矩陣WS 13 2.2 加權剛性之性能指標 17 2.3 加權進給速率之性能指標 22 2.4 奇異點的偵測與排除 27 2.5 普魯克座標矩陣基底向量正交性研究(ANGLE OF MISALIGNMENT) 28 2.5.1 普魯克座標矩陣正交性之定義 29 2.5.2 基底向量正交性分析圖形 32 第三章 參數研究 36 3.1 構型選擇與參數基本假設 36 3.2 HEXACT機械性能分析 39 3.3 HEXACT-Ⅰ改良構型的設計與三軸機械性能分析 42 3.3.3 性能指標的應用 45 3.4 HEXACT-Ⅱ改良構型設計參數分析 47 3.4.1 三軸性能指標圖形簡化 49 3.4.1 各參數對性能指標的影響 51 3.5 五軸性能指標圖形 60 3.5.1 平面上的性能分佈 61 3.5.2 以及 平面上的五軸性能分佈 62 3.5.3 簡化五軸性能指標圖形 63 3.6 HEXACT-Ⅱ改良構型最佳化 66 3.6.1 HEXACT-Ⅱ改良構型與史都華平台性能比較 70 3.7 干涉現象分析 74 3.7.1 三軸干涉分析 77 3.7.2 五軸干涉分析 79 第四章 新構型研發的系統化設計程序 85 4.1 設計程序 85 4.2 新構型 88 4.2.1 第三步驟:加權性能指標分析 90 4.2.2 第四步驟:正交向量分析法則 95 4.2.3 第五步驟:HEXACT-Ⅲ構型干涉分析 99 4.3 完成設計 103 4.4 HEXACT-Ⅲ構型與史都華平台性能比較 105 第五章 結論 110 5.1 本研究貢獻 110 5.2 未來研究方向 112 參考文獻 113

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