Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/1810
DC FieldValueLanguage
dc.contributor.advisor李吉群zh_TW
dc.contributor.advisorJi-Chun Leeen_US
dc.contributor.author盧怡廷zh_TW
dc.contributor.authorLu, Yi-Tingen_US
dc.date2005zh_TW
dc.date.accessioned2014-06-05T11:41:44Z-
dc.date.available2014-06-05T11:41:44Z-
dc.identifier.urihttp://hdl.handle.net/11455/1810-
dc.description.abstract本研究利用量測一三角錐來校準雷射探頭的位置與方位,使得雷射探頭與觸發式探頭於三次元量床上有共同的參考座標。 由於待測工件表面斜率對雷射探頭量測精度具有嚴重的影響,故本研究提出量測一標準球來求出各量測點的誤差與影響因素,將量測數據利用非線性回歸程式擬合出球面誤差模型的各個係數後,並進一步補償誤差以提升整個量測系統的精度。此外本研究也發現在量測三角錐時若是未補償因平面斜率所導致之量測誤差時,則三角錐頂點會有一偏移量產生導致校準誤差,因此吾人補償量測三角錐時的誤差,並重新計算探頭的位置與方位以及重新獲得球面誤差模型。 相較於傳統量測一斜面來取得擬合數據的方法,本研究具有誤差取得容易、能廣泛獲得不同斜率對誤差的影響,以及實驗器材架設方便等優點。 因此本研究結合雷射探頭的座標校準與球面誤差模型後,即可對三維的自由曲面執行精確的量測。最後分別利用觸發式探頭與雷射探頭來量測一三維自由曲面,並以觸發式探頭所量得的結果為基準來驗證雷射探頭量測的精確度。zh_TW
dc.description.abstractThis paper proposes a novel technique of laser displacement probe alignment with the coordinate measuring machine (CMM). Measuring a pyramid artifact that resides at a specific location with the touch trigger probe and the laser displacement probe, the position and the orientation of the probe is calibrated by using the proposed techniques. When laser displacement probe is used for profile measurement, the accuracy will be seriously affected by the gradient of the surface of an object. This paper presents a spherical error model to account for them. The parameters of this model are estimated by measuring a standard sphere and analyzing these data by means of nonlinear regression. The experimental results show that the model is satisfactory and the measurement errors after compensated are reduced dramatically. Because we do not consider the error of alignment procedure, we compensate error for measuring the pyramid artifact and acquire the new position and the new orientation of the probe. After that, we measure the standard sphere to obtain the spherical error model again. There are two advantages in our approach compared with the calibration scheme by measuring an inclined plane. These advantages are to acquire error of any gradient more easily and to build the experiment setup more conveniently. Finally, we measure a 3D free-form surface by the touch trigger probe and the laser displacement sensor respectively. The accuracy of the laser displacement sensor is verified with comparing the result of the measurement by each other.en_US
dc.description.tableofcontents中文摘要.........I 英文摘要.........II 誌謝.........III 目錄.........IV 圖目錄.........VII 表目錄.........X 符號說明.........XII 第一章 緒論.........1 1-1 前言.........1 1-2 相關文獻回顧.........3 1-3 研究方法與論文架構.........5 第二章 探頭校準與實驗器材架設.........7 2-1 觸發式探頭與雷射探頭的特性分析.........7 2-1-1 觸發式探頭.........7 2-1-2 雷射探頭.........11 2-2 雷射探頭的校準.........13 2-2-1 雷射探頭校準重覆性之研究.........19 2-3 變換探頭位置.........24 2-3-1 觸發式探頭參考座標變換之校準.........24 2-3-2 雷射探頭參考座標變換之校準.........26 2-4 實驗的器材與架構.........28 第三章 雷射探頭之誤差補償 .........31 3-1 斜率造成雷射探頭量測誤差之分析.........31 3-2 球面誤差模型之推導.........34 3-2-1 量測誤差與參考座標轉換之推導.........35 3-2-2 球面誤差模型.........37 3-3 陶瓷標準球量測規劃.........39 3-4 量測結果分析.........41 3-4-1 誤差分析與球面誤差模型之擬合 .........42 3-4-2 補償校準錐斜面量測之誤差.........51 3-4-3 三角量測面方位之分析.........53 第四章 實驗結果與討論.........55 4-1 斜率與量測誤差之關係.........55 4-1-1 量測的路徑規劃.........55 4-1-2 量測結果與分析.........57 4-2 三維自由曲面之量測.........61 4-2-1 自由曲面上量測點的法向量.........61 4-2-2 觸發式探頭量測結果.........62 4-2-3 雷射探頭量測之路徑規劃與量測結果.........63 4-2-4 雷射探頭量測自由曲面之誤差分析.........65 第五章 結論與未來展望.........69 5-1 結論.........69 5-2 未來展望.........70 參考文獻.........71 作者簡介.........74zh_TW
dc.language.isoen_USzh_TW
dc.publisher機械工程學系zh_TW
dc.subjectAlignmenten_US
dc.subject校準zh_TW
dc.subjectLaser Displacement Probeen_US
dc.subjectCoordinate Measuring Machineen_US
dc.subjectError Analysisen_US
dc.subject雷射探頭zh_TW
dc.subject三次元量床zh_TW
dc.subject誤差分析zh_TW
dc.title球面誤差模型於雷射位移探頭誤差補償之研究zh_TW
dc.titleA Study of Error Compensation for Laser Displacement Sensor by Spherical Error Modelen_US
dc.typeThesis and Dissertationzh_TW
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.openairetypeThesis and Dissertation-
item.cerifentitytypePublications-
item.fulltextno fulltext-
item.languageiso639-1en_US-
item.grantfulltextnone-
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