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系統識別號 U0002-0408200618151400
中文論文名稱 自主足球機器人系統之行為式控制
英文論文名稱 Behavior-based Control of an Autonomous Soccer Robot System
校院名稱 淡江大學
系所名稱(中) 機械與機電工程學系碩士班
系所名稱(英) Department of Mechanical and Electro-Mechanical Engineering
學年度 94
學期 2
出版年 95
研究生中文姓名 陳子原
研究生英文姓名 Zi-Yuan Chen
學號 693340589
學位類別 碩士
語文別 中文
口試日期 2006-07-12
論文頁數 102頁
口試委員 指導教授-王銀添
委員-李祖聖
委員-翁慶昌
中文關鍵字 全方位移動  全方位影像  自主式移動機器人 
英文關鍵字 Omnidirectional drive  Omnidirectional image  Autonomous mobile robot 
學科別分類 學科別應用科學機械工程
中文摘要 本論文完成一套自主足球機器人系統,設計的系統具有全方位移動、全方位視覺及網路遠端操作等功能。首先,以正逆運動學推導全方位移動機器人的運動方程式,以進行運動控制器設計。其次,搭配視覺回授規劃機器人的行為式控制(behavior-based control),使機器人自主完成特定行為。本研究規劃的機器人行為包括物件追蹤(object tracking)、移至球後(get position to kick the ball)、與避障(obstacle avoidance)等三種。其中避障行為以切線蟲演算法為基礎,改變其部份方法,達到機器人避障移動之效果。
全方位影像處理方面,包含全景影像轉換、物件辨識、與無障礙區域(free space)偵測。全景影像轉換在影像失真不影響物件辨識的前提下,以座標轉換的方式完成。物件辨識應用人臉辨識中的眼口定位法進行辨識,以求得穩定的物件位置輸出。無障礙區域偵測利用全方位攝影機以仿聲納(Sonar-like)探測方式進行偵測達到如測距儀(range finder)般的效果,將偵測結果提供給避障行為進行處理。
英文摘要 An autonomous soccer robot system is developed in this thesis, and this system provided with an omnidirectional drive, an omnidirectional vision, and a network remote control. First of all, the forward and inverse differential kinematics of the omnidirectional-driven robot is inferred, based on which a kinematics controller of the robot is designed. Secondly, combined with the vision feedback, the behavior-based control is devised for the soccer robot to achieve specific behaviors autonomously. Finally, three different behaviors are planned, including object tracking, getting position to kick the ball, and obstacle avoidance. The behavior of obstacle avoidance is developed and modified based on Tangent Bug algorithm.
The image processing of omnidirectional vision includes three stages, namely, panoramic transformation, object recognition, and free space detection. The panoramic image is utilized for visual servo control on the premise that the distortion of image will not affect the performance of object recognition in the process. The function of object recognition provides stable outputs of object positions by applying the method for analyzing segmentation of human faces. As regards the process of free space detection, it provides a similar performance of laser rangefinders by deploying the omnidirectional vision system as a sonar-like detection device. The results of image processing are provided as the feedback for the behavior-based control.
論文目次 目 錄

致謝 Ⅰ
中文摘要 Ⅱ
英文摘要 Ⅲ
目錄 Ⅳ
圖目錄 Ⅵ
表目錄 XI
第1章 序論 1
1.1 研究動機 1
1.2 全方位移動平台 2
1.3 文獻探討 3
1.3.1 機器人系統架構相關文獻 3
1.3.2 全方位驅動機器人相關文獻 4
1.3.3機器人避障相關文獻 5
1.4 研究範圍 8
1.5 論文架構 9

第2章 自主機器人之行為式控制 10
2.1 全方位移動 10
2.2 機器人運動方程式 11
2.3 物件追蹤行為 14
2.4 移至球後行為 14
2.5 避障行為 16
2.6 單部機器人行為導航 19

第3章 視覺回授系統設計 23
3.1 全方位視覺 23
3.2 全景影像轉換 25
3.3 色彩空間與影像分割 27
3.4 影像中物件之辨識 33
3.5 無障礙區域偵測 34
3.6 影像處理流程 36

第4章 行動機器人平台系統與機構設計 40
4.1 行動機器人系統架構與規格 40
4.2 移動平台驅動系統 41
4.3 PIC Motor Controller 43
4.4 直流馬達驅動電路 45
4.5 直流馬達與馬達驅動電路測試 48
4.6 移動平台靜力學分析 50
4.8 操作程式介面 52

第5章 實驗與結果分析 54
5.1 機器人移動分析與測試 54
5.2 追蹤測試 62
5.3 移至球後實測 65
5.4 避障測試 68
5.5 機器人行為導航測試 68

第6章 結論與未來研究方向 70
6.1 研究成果 70
6.2 未來研究方向 70

參考文獻 72
相關廠商網頁 76
附錄A 近年服務型機器人的發展 77
附錄B 全方位移動機構的發展 84
附錄C 全方位視覺的發展 89
附錄D 色彩座標系統 93
附錄E Windows-based網路通訊 99


圖 目 錄

圖1.1 機器人系統 2
圖1.2 軟體架構 3
圖1.3 Trackies機器人系統 4
圖1.4 1999年Clockwork Orange 4
圖1.5 2006年WinKIT 4
圖1.6 細胞分割法圖例 7
圖1.7 蟲演算法移動示意圖 7
圖1.8 環境模型狀態 7
圖1.9 極座標直方圖 7
圖1.10 (a)Polar histogram(b)Masked Polar histogram 8
圖1.11 切線蟲演算法流程示意圖 8
圖1.12 障礙物的簡化與繞行 8
圖1.13 環境狀態分析 8
圖1.14 機器人整體架構圖 9
圖2.1 車型移動與全方位移動 11
圖2.2 全方位移動基本架構座標圖 11
圖2.3 1號車輪狀態 12
圖2.4 運動控制器 14
圖2.5 機器人動作模式 14
圖2.6 球場相對關係示意圖 16
圖2.7 狀態示意圖 16
圖2.8 狀態目標 16
圖2.9 移至球後路徑 16
圖2.10 由感測器取得之無障礙區域 18
圖2.11 障礙物邊緣簡化 18
圖2.12 無障礙區域的邊界處理 18
圖2.13 機器人可移動區域 18
圖2.14 避障移動方向示意 18
圖2.15 避障路徑範例 19
圖2.16 behavior-based navigation 結構 20
圖2.17 model-based navigation 結構 20
圖2.18 機器人導航流程圖 21
圖2.18 機器人導航流程圖 21
圖2.19 球場狀態分類 22
圖3.1 全方位攝影機 24
圖3.2 由攝影機上取得的實際影像 24
圖3.3 雙曲面鏡 24
圖3.4 QuickCam Pro 4000 24
圖3.5 像素距離(pixel)與實際距離(cm)關係 24
圖3.6 全景影像轉換 26
圖3.7 全景影像轉換(一) 26
圖3.8 全景影像轉換(二) 26
圖3.9 全景影像轉換對應關係 27
圖3.10 顏色分布與閥值示意圖 28
圖3.11 顏色分布與閥值修正示意圖 29
圖3.12 HV座標展開示意圖 29
圖3.13 擷取影像 30
圖3.14 RGB閥值分割 30
圖3.15 HSV–RGB閥值分割 30
圖3.16 YUV–RGB閥值分割 30
圖3.17 黃色在RGB空間的分布狀態 32
圖3.18 黃色在HSV空間的分布狀態 32
圖3.19 黃色在RGB空間的色彩模型 33
圖3.20 臉部亮度投影示意圖 34
圖3.21 眼口定位示意圖 34
圖3.22 極座標與俓向投影示意圖 34
圖3.23 無障礙區域偵測方法 35
圖3.24 無障礙區域偵測示意圖 35
圖3.25 偵測結果示意圖 35
圖3.26 影像處理流程圖 37
圖3.27 機器人上的全方位攝影機影像 38
圖3.28 (a)全景影像轉換結果 38
圖3.28 (b)影像中各物體分布的辨識結果 38
圖3.28 (c)利用徑向投影方法累計曲線圖 38
圖3.28 (c)利用徑向投影方法累計曲線圖 38
圖3.29 (a)最後得到物體之位置 39
圖3.29 (b)Landmark辨識結果 39
圖3.30 無障礙區域判斷 39
圖4.1 機器人整體系統架構圖···························································································41
圖4.2 機器人機構設計圖與實體照片···············································································41
圖4.3 (a)驅動輪模組·······································································································42
圖4.3 (b)模組爆炸圖·······································································································42
圖4.4 全方位移動車台機構圖···························································································42
圖4.5 PIC18F4XXX 系列腳位圖·······················································································44
圖4.6 PIC 微處理器電路板································································································45
圖4.7 H 電橋示意圖···········································································································45
圖4.8 電壓隔絕放大電路···································································································46
圖4.9 光偶合器電路···········································································································46
圖4.10 由於功率晶體引起的臂間短路·············································································47
圖4.11 直流馬達驅動電路板·····························································································47
圖4.12 週期102μs 時馬達特性曲線圖·············································································48
圖4.13 週期256μs 時馬達特性曲線圖·············································································49
圖4.14 週期512μs 時馬達特性曲線圖·············································································49
圖4.15 全方位移動平台靜力示意·····················································································50
圖4.16 全方位移動平台自由體圖·····················································································50
圖4.17 機器人與遙控端通信架構·····················································································50
圖4.18 伺服端操作程式介面·····························································································53
圖4.19 機器人端操作程式介面·························································································53
圖5.1 全方位移動平移與三輪速度分佈···········································································55
圖5.1 全方位移動平移與三輪速度分佈···········································································55
圖5.2 各角度平移最高速度分布·······················································································56
圖5.3 各角度平移所需總驅動力分布···············································································56
圖5.4 各角度平移最大驅動力分布···················································································57
圖5.5 (a)機器人移動測試方向示意圖············································································58
圖5.5 (b)機器人移動操作程式介面···············································································58
圖5.6 前後平移···················································································································59
圖5.7 左右平移···················································································································59
圖5.8 右前斜向平移···········································································································59
圖5.9 左前斜向平移···········································································································60
圖5.10 左後斜向平移·········································································································60
圖5.11 右後斜向平移·········································································································60
圖5.12 繞圓························································································································61
圖5.13 場地尺寸與配置及機器人繞場路徑規畫······························································62
圖5.14 初始位置·················································································································63
圖5.15 繞場軌跡1/4···········································································································63
圖5.16 繞場軌跡2/4···········································································································63
圖5.17 繞場軌跡3/4···········································································································63
圖5.18 繞場軌跡4/4···········································································································63
圖5.19 追蹤物件在影像平面之軌跡·················································································64
圖5.20 追蹤物件角度、距離與時間之關係·····································································64
圖5.21 移致球後測試規劃·································································································65
圖5.22 移至球後軌跡1······································································································66
圖5.23 移至球後軌跡2······································································································66
圖5.24 移至球後軌跡3······································································································66
圖5.24 移至球後軌跡3······································································································66
圖5.25 移至球後在影像平面之軌跡·················································································67
圖5.26 (a)球與機器人正前方夾角與時間之關係··························································67
圖5.26 (b)球與機器人距離與時間之關係·····································································67
圖5.26 (c)球與球門間夾角與時間之關係······································································67
圖5.27 避障測試初始狀態1······························································································68
圖5.28 避障行為軌跡1······································································································68
圖5.29 避障測試初始狀態2······························································································68
圖5.30 避障行為軌跡2······································································································68
圖5.31 導航測試初始狀態1······························································································69
圖5.32 機器人移動軌跡1··································································································69
圖5.33 導航測試初始狀態2······························································································69
圖5.34 機器人移動軌跡2··································································································69


表 目 錄

表3.1 各色彩空間分割效能 31
表4.1 全方位車輪規格 43
表4.2 直流馬達尺寸 43
表5.1 全方位移動三輪配速 58
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