臺灣博碩士論文加值系統

凸輪曲線之設計在引擎系統之性能要求與動態噪音特性等方面佔有極重要的地位，因此此部份設計之研究發展便格外的重要，亦極具設計之附加價值。
本文主要以多項式展開(Polynomial expansion)之方法及參數無因次化(Non-dimensional)的方式對於凸輪曲線進行間斷連續曲線之逼近結合設計，此法雖須經試誤的過程加以進行，但藉由此法可較前人研究結果得到較理想且較佳的設計。
第二部份將探討兩個主題，第一主題是以四次多項式七段曲線模擬法修正其Daniel Clark Park凸輪設計法之曲線缺點，而另一主題則以一市售車引擎凸輪曲線為基礎，而設計其另一最佳化凸輪曲線。
第三部份，將已完成四次七段曲線多項式程式，以MATLAB之GUI方式包裝為視窗介面，使往後使用者能以這套程式來修訂或是設計其理想之凸輪曲線，並觀察其凸輪曲線動態之情形

The design of the cam profile occupies the extremely important position in the performance of the engine system and dynamic noise characteristic, etc.
The performance of a cam-following machine depends directly on the design of the cam profile. For this design, we propose a successive, seven-curve and piecewise-continuous, non-dimensional fourth-order polynomial-expansion assembling technique, using a second-order polynomial expansion for acceleration in the cam rise interval. Through proper setting of the boundary conditions pertaining to the follower motion, the piecewise cam lift profile was connected smoothly for displacement, velocity and acceleration. This technique makes the cam profile design more flexible and reasonable for optimal translational motion of the cam follower.
In the second part, we will probe two themes. The first theme is shortcomings of revising cam design of Daniel Clark Park with fourth order polynomial function. The second topic is based on the cam profile of a motorcycle of engines. The Fourth-order polynomial method is need design a better cam profile.
Third part, we make and become the window interface by way of GUI of MATLAB for the function already finished. The window interface will enable user to revise or design its ideal cam profile, and simulate its dynamic behavior.

摘　要 i
ABSTRACT ii
目 錄 iv
表目錄 vi
圖目錄 vii
第一章 緒論 1
1.1 前言 1
1.2 研究動機 2
1.3 文獻回顧 3
1.4 論文架構 5
第二章 四次多項式多段曲線擬合 6
2.1 理論概要 6
2.1.1 凸輪曲線設計方法 6
2.2 凸輪曲線之邊界條件設定 9
2.2.1 第(I)段斜坡段(Ramp) 13
2.2.2 第(II)段斜坡段-最大加速度段 16
2.2.3 第(III)段最大加速度至最大速度段 18
2.2.4 第(IV)段最大速度至最高位移段 22
第三章 模擬結果與討論 29
3.1 Daniel [13]凸輪曲線設計法 29
3.1.1 理論概要 29
3.1.2 模擬結果與討論 29
3.2 市售機車凸輪曲線探討 35
3.2.1 市售機車GY6引擎概論簡介 35
3.2.2 模擬結果與討論 37
第四章 GUIDE的圖形化介面 45
4.1 概要 45
4.2 介面設計 46
第五章 結論與未來發展 49
5.1 結論 49
5.2 未來展望 49
參考文獻 50
符號彙編 51

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