研究生: |
葉柏晟 Po-cheng Yeh |
---|---|
論文名稱: |
具隨機參數單汽缸引擎動態響應與最佳化設計之研究 A Study on the Dynamic Response and Optimal Design of Single-Cylinder Engine with Random Parameters |
指導教授: |
呂森林
Sen-lin Lu |
口試委員: |
黃聰耀
Cong-yao Huang 劉見賢 Chien-hsien Liu |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 機械工程系 Department of Mechanical Engineering |
論文出版年: | 2009 |
畢業學年度: | 97 |
語文別: | 中文 |
論文頁數: | 93 |
中文關鍵詞: | 隨機變數 、單汽缸引擎 、粒子群最佳化 |
外文關鍵詞: | single-cylinder engine |
相關次數: | 點閱:484 下載:1 |
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本論文主要的目的在研究單汽缸引擎的動態響應與最佳化設計,文中將分析引擎在運轉週期的動態響應,例如:平均扭矩、搖撼力、側向力及各元件之受力等,文中並假設曲柄軸與連桿之長度為隨機變數,汽缸內之氣體壓力為隨機過程,分析這些力矩及受力的平均值及變異係數。最後再利用粒子群最佳化演算法(PSO),以連桿與曲柄軸的長度及連桿的質心位置為設計變數,來設計具最佳化平均扭矩輸出之單汽缸引擎。文中將以數個數值範例來探討連桿與曲柄軸長度比,連桿質心位置及曲軸轉速等參數與單汽缸引擎動態響應的關係。並討論隨機參數動態響應的影響,其結果將與蒙地卡羅模擬值作比較。
The main object of this thesis is to study the dynamic responses and optimal design of a single-cylinder engine. The dynamic responses such as average torque, shaking force, bearing forces acting on the wrist-pin, crank-pin and piston, are analyzed. The crankshaft length and connecting-rod length are assumed to be random variables, and the gas pressure in cylinder is random process. Accordingly the mean and coefficient of variation of the dynamic responses are derived. At last, a single-cylinder engine possessing the optimal average torque output is designed by using the Particle Swarm Optimization (PSO), considering the connecting-rod length, crankshaft length and mass center position of connecting-rod as design variables. Several numerical examples are illustrated to study the relationship between the dynamic responses and the connecting-rod length and crankshaft length ratio, mass center position of the connecting-rod, and crankshaft angular speed. In addition, the effects of random parameters on the dynamic responses will be investigated, and the results will be compared with those obtained by using the Monte Carlo simulation.
【1】 A. A. Smaili, and J. MM. Khetawat, “The Dynamics of Automotive Engine Crankshafts”, Mechanism and Machine Theory, Vol.29 (7), pp.995-1006, 1994.
【2】 黃以文,“虛擬機車引擎之動力模擬”第八屆全國機構與機器設計學術研討會,2005。
【3】 陳志信 “機車曲柄配重設計與結構振動分析,國立台灣大學機械工程研究所,碩士論文,1981。
【4】 鄒文崧,“滑塊曲柄機構與引擎平衡理論和應用”長庚大學機械工程研究所,碩士論文,1998。
【5】 謝旻益, “遺傳演算法於引擎隔振系統之最佳化設計” 台灣科技大學機械工程研究所,碩士論文,2004。
【6】 V.H. Arakelian “Shaking moment cancellation of self-balanced slider–crank mechanical systems by means of optimum mass redistribution” Mechanics Research Communications 33 (2006) 846–850.
【7】 Selćuk Erkaya, Şkr Su, İbrahim Uzmay “Dynamic analysis of a slider-crank mechanism with eccentric connector and planetary gears” Machine Theory, Volume 42, Issue 4, April 2007, Pages 393-408 .
【8】 Kenan Koser “A slider crank mechanism based robot arm performance e and dynamic analysis” Mechanism and Machine Theory 39 (2004) 169–182.
【9】 Jih-Lian Ha, Rong-Fong Fung, Kun-Yung Chen, Shao-Chien Hsien “Dynamic modeling and identification of a slider-crank mechanism” Journal of Sound and Vibration 289 (2006) 1019–1044.
【10】 D. Mundo, H.S. Yan “Kinematic optimization of ball-screw transmission mechanisms” Mechanism and Machine Theory (2006).
【11】 Li Hong, “Analysis of working principle of single-cylinder reciprocating compressor and inertia force”, Coal Technology, Vol.26, No.9, 2007.
【12】 Yohei KOMAITA and Katsuhisa FURUTA “Energy control of slider-crank Mechanism” SICE Annual Conference 2008 August 20-22, 2008, The University Electro-Communications, Japan.
【13】 Eres Sylemez “Classical transmission-angle problem for slider-rank mechanisms” Mechanism and Machine Theory 37 (2002) 419–425.
【14】 H. H. Mabie and F. W. Ocvirk, 1975, Mechanisms And Dynamics of Machinery, 3rd.
【15】 蕭瑞聖 “機車原理與機構” 徐氏基金會, 1988。
【16】 趙士偉,“機車結構減振之設計方法” 國立台灣大學機械工程研究所,碩士論文,2000。
【17】 Hu, X. Eberhart, R. C. and Y. Shi, “Engineering optimization with particle swarm.” Proceedings of the IEEE Swarm Intelligence Symposium 2003 (SIS 2003), 53-57, Indianapolis, Indiana, USA. (2003)
【18】 蘇昱豪,“具隨機粒子與微調機制式粒子群最佳化”台灣科技大學機械工程研究所,碩士論文,2006。
【19】 Y. T. Tsai, F. S. Hsu, C. L. Shen, “A study of optimizing reliability design using genetic algorithms”, The Chinese Society of Mechanical Engineers, Nov.23-24, 2007.
【20】 David H. Myszka, 2002, Machines & Mechanisms Applied Kinematic Analysis.