本論文是針對史蒂芬生第Ⅲ型六連桿機構的運動產生問題，解決此機構三個位置運動產生的兩種特殊情況。第一種情況為三個接地插銷的位置已經指定；第二種情況為輸出桿的尺寸與形狀已被指定。本文找出這兩種問題的解析解，每個情況皆以例題說明，又分別探討這兩種情況的解題程序是否皆可找出解答，發現除非在非常特殊情況，這些解題程序都可找到答案。

Two special cases in motion generation of Stephenson Ⅲ six-bar linkage are treated in this thesis. The first case is the situation that location the three fixed pins have been specified; and in the second case both the size and shape of the output link are specified. In each case the problem solving procedure lead to analytical solutions. An example for each case is given for explanation. Also, except in very special cases, solutions can always be found by the methods suggested in this thesis.

第一章 緒論	1
第一節 前言	1
第二節 文獻回顧:	3
第二章 指定接地插銷位置的運動產生問題	6
第一節 問題敘述	6
第二節 解題步驟:	8
第三章 指定輸出桿尺寸的運動產生問題	14
第一節 問題敘述	14
第二節 解題步驟:	16
第四章 結果與討論	26
第一節 指定接地插銷位置的分析結果	26
第二節 指定輸出桿尺寸的分析結果	28
第五章 結論	30
參考文獻	31

圖目錄
圖一 瓦特六連桿機構 (a)第Ⅰ型 (b)第Ⅱ型	33
圖二 史蒂芬生六連桿機構 (a) 第Ⅰ型(b) 第Ⅱ型 (c) 第Ⅲ型	34
圖三 史蒂芬生第Ⅲ型六連桿起始位置示意圖	35
圖四 史蒂芬生第III型六連桿之起始位置與第j個位置	36
圖五 向量A、Bei

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