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博碩士論文 etd-0724112-023128 詳細資訊
Title page for etd-0724112-023128
論文名稱
Title
可調整之震盪式波浪能量擷取系統之設計
Design of Oscillatory Wave-Energy Acquisition System With Adjustable System Characteristics
系所名稱
Department
畢業學年期
Year, semester
語文別
Language
學位類別
Degree
頁數
Number of pages
88
研究生
Author
指導教授
Advisor
召集委員
Convenor
口試委員
Advisory Committee
口試日期
Date of Exam
2012-07-13
繳交日期
Date of Submission
2012-07-24
關鍵字
Keywords
最佳化、可調整式系統、波浪能量擷取系統、震盪式系統
Optimization, oscillatory system, wave energy acquisition system, adjustable system
統計
Statistics
本論文已被瀏覽 5663 次,被下載 472
The thesis/dissertation has been browsed 5663 times, has been downloaded 472 times.
中文摘要
摘要
本研究的目的在於研發可調整的震盪式波浪能量擷取系統,使系統能在大部分頻率的波浪中擷取能量。根據過去的研究顯示,舊有的震盪式能量擷取系只能在小範圍的頻率範圍內擷取能量,使得系統在提高擷取功率上產生瓶頸。設計可調整的震盪式波浪能量擷取系統的目的就是調整參數以改變系統的運作頻率,突破能量擷取功率的瓶頸。接下來推導各種系統的數學動態模型,透過最佳化搜尋及分析頻率響應圖,找出機構中可以改變運動行為的關鍵參數:浮筒質量、齒輪比和彈簧係數等參數。並決定以三自由度的飛輪式震盪系統為適合進行設計的系統主體架構。最後針對所挑選的參數進行設計。
而透過本研究的分析後發現,新系統在參數最佳化後,讓系統能在大部分的頻率範圍內擷取能量。且經由結果可知,新型的震盪式系統的擷取功率相較於傳統的震盪式系統最多可增加70%左右。
Abstract
This study aims to develop an oscillatory wave-energy acquisition system with adjustable system characteristics. The system is designed to efficiently acquire energy from the sea waves with a wide frequency band. Based on the past studies, the oscillatory wave-energy acquisition system, designed previously, can only acquire energy from the sea waves with a narrow frequency band. Such a limit causes the system to have a low efficiency in acquiring power if the wave has a large frequency band. The main goal of this novel design to allow the system adjusting its system characteristics, based on the dynamic characteristics of sea wave, to attain the optimal power acquisition. In the study, different types of oscillatory systems are first examined whether they are effective to transform their dynamic characteristics when the system parameters are varied. The effectiveness of such transformation is evaluated through an optimization procedure. This procedure is to evaluate whether the frequency response of system can acquire the highest power from a given property of sea wave. Through a detailed analysis, the system structure of a three degree-of-freedom oscillatory wave-energy system is chosen for current purpose. A careful study about the effectiveness of dynamic transformation, via the adjustment of different system parameters, is then studied.
The study shows that the selected system with adjustable capability can effectively acquire energy from a sea wave with large frequency band. The acquired efficiency can increase up to 70% compared to the earlier system.
目次 Table of Contents
致謝

第一章、緒論 1
1-1、研究動機與方法 1
1-2、過去波浪能量擷取系統的發展 4
1-3、內容介紹 10
第二章、最佳系統特性的推導與分析 11
2-1、何謂最佳波浪能量擷取系統 11
2-2、最佳系統之推導與特性.2
2-3、過去震盪式系統之瓶頸與其改善方式 15
第三章 系統之數學模型分析 20
3-1、擷取能量均勻化之最佳化 20
3-2、系統動態模型 25
3-3、影響運作頻率之參數 28
3-4、決定設計之主體架構 36
3-5、波浪頻譜分析及預測 40
第四章、設計可調整系統 45
4-1、可調整重量之浮筒設計概念 45
4-2、可調整重量之浮筒設計 46
4-3、可調整彈性係數之彈簧設計概念 50
4-4、可調整彈性係數之彈簧設計 50
第五章、總結與未來展望 61
5-1、各章節總結及結果 61
5-2、未來展望 62
參考文獻 64
附錄一 66
附錄二 69
附錄三 71
附錄四 75
參考文獻 References
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