臺灣博碩士論文加值系統

本論文中我們針對考慮慣性效應之平面連桿機構提出一種新的動態力量傳遞性能標(DFTI)並建立其分析程序。這個指標可作為考慮質量之連桿機構其力量傳遞性能的分析工具。本分析工具是在達蘭貝特法則與虛功原理等動力學分析方法下所建構而成。研究中可知在相同桿件尺寸下，考慮桿件質量之機構的力量傳遞性能將比靜態條件下的力量傳遞性能大幅降低，在動態條件下相同尺寸之力量傳遞性能優劣與靜態條件下之優劣無絕對關係。動態條件下之慣性力對傳遞性的影響可以藉由質心位置的改變，達到改善特定位置之傳遞性能。本論文針對不同機構尺寸間之傳遞性能，提出正規劃動態力量傳遞性能指標(NDFTI)以進行比較，並提出平均力量傳遞性能指標(MDFTI)作為最佳化機構尺寸設計之目標函數。設計結果顯示，經由尺寸、質心位置參數最佳化設計所得之機構傳遞性能，相較於未最佳化前具有改善的效果。本文所提出之指標可以作為考慮慣性效應之動態力量傳遞性能量測工具，並可應用於最佳化機構尺寸設計。

In this thesis, a new dynamic force transmission index(DFTI) is proposed and analysis procedure is established for planar linkage mechanisms with the inertial effects. The index can be used as an analytic tool of the force transmission performance on the linkages with mass. The method is based on the D′Alembert’s principle and virtual work principle. In this research it is found that the dynamic force transmission performance is substantially lower than the static force transmission performance; and the force transmission performance has no obvious correlation between the dynamic and the static conditions of the same dimension. The dynamic force transmission performance can be improved by changing the positions of the center of mass of links. In this thesis, we propose the normalized dynamic force transmission index (NDFTI) to compare the force transmission performance of mechanisms with different dimensions. The mean dynamic force transmission index (MDFTI) is used as the objective function in the optimization process. The results shows that the linkage mechanisms with optimized parameters of link dimension and position of center of mass outperform those linkages without optimization design process in the aspect of force transmission performance. The indices can be used as quantitative measure of the force transmission performance and appropriate for the optimum design of planar linkage mechanisms considering inertial effects.

第一章　緒論
1.1前言 1
1.2文獻回顧 2
1.3研究動機 5
1.4論文架構 6
第二章　理論背景
2.1前言 7
2.2力量傳遞性能之定義 8
2.2.1廣義機械效益 8
2.2.2有效力量比 12
2.2.3動態力量傳遞性能指標 16

第三章　動態力量傳遞性能分析
3.1前言 19
3.2單自由度單迴路連桿機構 19
3.2.1運動分析 19
3.2.2力量分析 24
3.2.3動態力量傳遞性能分析 28
3.3單自由度多迴路連桿機構 46
3.3.1動態力量傳遞性能分析 46
3.4討論 52
第四章　動態力量傳遞性能最佳化
4.1前言 54
4.2動態力量傳遞性能最佳化之數學模型 54
4.3最佳化設計過程 58
4.4討論 64
第五章　結論與未來展望
5.1結論 65
5.2未來展望 66
參考文獻 67

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