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研究生: 吳邦瑜
Wu, Bang-Yu
論文名稱: 無人水面載具導引律實體驗證平台開發
A Real Verification Platform Design for Guidance Law Performances of Unmanned Surface Vehicles
指導教授: 陳永裕
Chen, Yung-Yue
學位類別: 碩士
Master
系所名稱: 工學院 - 系統及船舶機電工程學系
Department of Systems and Naval Mechatronic Engineering
論文出版年: 2020
畢業學年度: 108
語文別: 中文
論文頁數: 83
中文關鍵詞: 測試平台Matlab平面運動機構
外文關鍵詞: Testing Platform, Matlab, Planar Motion Mechanism
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  • 到了21世紀的今天,隨著陸上資源不斷開採,在可預期的將來可能會遇到資源枯竭的問題,而廣闊的海洋潛藏著豐富的礦產、漁業資源,因此探索海洋一直是各國發展之主力。目前無人載具導航之導引律(Guidance Law)設計已經行之有年,得益於Mathwork公司的Matlab套裝軟體針對設計導引律中常用到的數學問題都有相應之函式可以提供設計者快速調用與驗證。本研究利用一艘未知參數之船殼,先對其船殼進行距地高量測,並根據其距地高資料建模,並透過Solidwork求出約略重心位置以決定設備擺放之位置,利用編寫好Matlab函式由ATmega系列晶片轉換成致動器控制命令,使Matlab在設計無人船導引律時,除了電腦端模擬以外,更可以透過本研究的方式在相對應的實船上快速驗證導引律應用於實船上之可行性。為了滿足導引律設計後模擬所需之船體參數,我們透過平面運動機構(Planar Motion Mechanism, PMM)得到該船流體動力係數,再將其帶入三自由度的運動方程式來到完整數學模型,並透過卡爾曼濾波器建立一個透過地磁儀取得磁方位角的方式,最後透過水槽測試比對致動器輸出期望推力與真實推力輸出,以驗證船體機構設計是否如預期的輸出控制命令。

    The guidance law of unmanned surface vehicle navigation (Guidance Law) has been designed for many years. However, an off-line hardware verification platform and a standard process are not yet announced. For solving these issues, a platform which integrates software, hardware and measurement of ship models’ hydrodynamic parameters is proposed in this investigation for off-line quickly verifying a designed ship’s overall performance without a large amount of sea trails. The famous software Matlab which contains powerful mathematical functions for the mathematical problems commonly are used in the development of this platform for calculations of the proposed guidance law, collecting sensors’ messages and output desired actuators’ commands. In this study, unknown parameters of the used hull, including center of gravity, viscus coefficients, and damping coefficients are precisely estimated through Solidwork and Planar Motion Mechanism (PMM). Main software platform is constructed via using Matlab because of its friendly and abundant mathematical tools, and this arrangement of software usage offers designers of surface vessels a really convenient programming environment. The major calculator adopted in this study is an industrial desktop for the purpose of swiftly executing required programs and communicates with low level microcontrollers or DSP.

    摘要 ii Extended Abstract iii 誌謝 vii 目錄 viii 圖目錄 xii 表目錄 xvi 符號說明 xvii 第一章 介紹 1 1.1引言 1 1.2研究動機 1 1.3文獻回顧 3 1.4論文架構 4 第二章 理論與數學模型 5 2.1 大地座標系與自體座標系 5 2.2無人水面載具動態方程式 7 2.2.1載具運動學 7 2.2.2載具動力學 8 第三章 全船系統架構 11 3.1硬體設備介紹 11 3.2舵機與推進器控制部 12 3.3GPS與九軸感測器架構 20 3.4使用者介入之無線遙控系統 23 第四章 無人船系統流體動力參數量測 24 4.1平面運動機構系統架構與功能 24 4.2前置作業 25 4.2.1重心量測 25 4.2.2轉動慣量量測 28 4.3PMM試驗種類介紹 34 4.3.1靜態試驗 34 4.3.2動態試驗 35 4.4流體動力參數計算 39 4.4.1計算流程 39 4.4.2PMM運動方程式 40 4.4.3PMM之數學模型 40 4.5試驗週期(T)與平擺速度( )之關係 42 第五章 載具數學模型 44 5.1PMM實驗結果 44 5.1.1斜航試驗結果 44 5.1.2橫移試驗結果 46 5.1.3縱移試驗結果 46 5.1.4平擺試驗結果 46 5.1.5具漂流角之平擺試驗結果 46 5.2流體動力參數代入載具動態方程式 46 5.2.1質量慣性矩陣 47 5.2.2科氏力矩陣 47 5.2.3流體阻尼矩陣 48 第六章 磁方位角誤差抑制 49 6.1無人船方位角感測校正演算法 49 6.2地磁儀靜態基準值補償 50 6.3地磁儀動態誤差抑制 52 6.3.1概述 52 6.3.2 實驗設備 53 6.3.3 地磁儀與船身姿態轉換 54 6.3.4 自回歸滑動平均模型(ARMA model) 56 6.3.5 遞迴最小平方法 57 6.3.6 卡爾曼濾波器 58 第七章 載具推力驗證 62 7.1量測方法 63 7.1.1 X軸向力量測 63 7.1.2 Y軸向力量測 64 7.1.3 沿Z軸力矩量測 65 7.1.4 動力分配 66 7.2量測結果 68 7.2.1 X軸向力量測結果 68 7.2.2 Y軸向力與沿Z軸力矩量測結果 72 第八章 結論 81 參考文獻 82

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