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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 吳文中(Wen-Jong Wu) | |
dc.contributor.author | Shu-Chen Wen | en |
dc.contributor.author | 溫淑甄 | zh_TW |
dc.date.accessioned | 2021-07-11T14:44:30Z | - |
dc.date.available | 2021-11-01 | |
dc.date.copyright | 2016-11-01 | |
dc.date.issued | 2016 | |
dc.date.submitted | 2016-08-02 | |
dc.identifier.citation | [1] 彥坂昌男. (2011). 日本工具機產業是否前途光明. Available: http://www.nippon.com/hk/currents/d00007/
[2] F. Gray, 'Pulse code communication,' US Patent No. 2632058 A, 1953. [3] 趙晨宇, '絕對式光學編碼器之研發,' 國立台灣大學工程科學及海洋科學系暨研究所碩士論文, 2016. [4] E. H. Hall, 'On a new action of the magnet on electric currents,' American Journal of Mathematics, vol. 2, pp. 287-292, 1879. [5] R. D. Foskett 'Photoelectric incremental encoder providing output indication of amount and direction of relative motion between two members,' US Patent No. 3449588 A, 1969. [6] F. P. Quintián, N. Calarco, A. Lutenberg, and J. Lipovetzky, 'Performance of an optical encoder based on a nondiffractive beam implemented with a specific photodetection integrated circuit and a diffractive optical element,' Applied optics, vol. 54, pp. 7640-7647, 2015. [7] P. Bacchi and P. S. Filipski, 'Virtual absolute position encoder,' US Patent No. US5852413 A, 1998. [8] G. T. Buračas and G. M. Boynton, 'Efficient design of event-related fMRI experiments using M-sequences,' Neuroimage, vol. 16, pp. 801-813, 2002. [9] 陳文藝、楊輝, '一種單碼道絕對式光學編碼器的编解碼方法,' 光電工程, vol. 40, pp. 142-149, 2013. [10] 鄭洪、林昌東, '位移連續編碼原理的研究及應用,' 計量學報, vol. 24, pp. 29-31, 2003. [11] E. Mayer and U. Benner, 'Scale and position measuring system for absolute position determination,' US Patent No. 6742275 B2, 2004. [12] A. Argeseanu, D. Popovici, O. Cornea, and I. Torac, 'A new algorithm and device for absolute linear encoders dedicated to long distance applications,' in Optimization of Electrical and Electronic Equipment, 2008. OPTIM 2008. 11th International Conference on, 2008, pp. 181-188. [13] D. Hopp, C. Pruss, W. Osten, J. Seybold, K.-P. Fritz, T. Botzelmann, et al., 'Diffractive incremental and absolute coding principle for optical rotary sensors,' Applied optics, vol. 50, pp. 5169-5177, 2011. [14] 陳新、王晗、陳新度、劉强、吳志雄, '一種绝對光栅尺的多軌道编碼方法,' CN Patent No. 103557878 B, 2015. [15] P. G. Farrell, Essentials of error-control coding: John Wiley & Sons, 2006. [16] (2014). 機器視覺 Vision 基礎知識-上集. Available: http://www.labviewpro.net/forum_post_detail.php?post=8061&fid=7 [17] C. G. Relf, Image acquisition and processing with LabVIEW: CRC press, 2003. [18] D. L. MacAdam, 'Projective transformations of ICI color specifications,' JOSA, vol. 27, pp. 294-299, 1937. [19] D. A. Kerr, 'Chrominance subsampling in digital images,' The Pumpkin,(1), November, 2005. [20] A. Rosenfeld and A. C. Kak, Digital picture processing vol. 1: Elsevier, 2014. [21] G. G. RuchikaChandel, 'Image Filtering Algorithms and Techniques: A Review,' International Journal of Advanced Research in Computer Science and Software Engineering, vol. 3, pp. 198-202, 2013. [22] R. Posada-Gómez, O. O. Sandoval-González, A. M. Sibaja, O. Portillo-Rodríguez, and G. Alor-Hernández, 'Digital Image Processing Using LabView,' Practical Applications and Solutions Using LabVIEW™ Software, pp. 297-316, 2011. [23] T. Klinger, Image processing with LabVIEW and IMAQ Vision: Prentice Hall Professional, 2003. | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/78168 | - |
dc.description.abstract | 光學編碼器是一種用來迴授位置訊號的光機電整合裝置,主要由三個元件構成:光源、碼盤或光柵尺(提供位置訊息之編碼)以及光偵測器元件(量測到的位置訊息轉換成電子訊號)。依不同碼盤(光柵尺)的設計,可將光學編碼器分為增量式編碼及絕對式編碼。裝置剛啟動時,增量式光學編碼器必須先將系統回歸至參考點,作為當次量測之起始位置;而絕對式光學編碼器因每一個位置皆設計不同的編碼訊息,因此可省略回歸起始位置的步驟。然而,在傳統的絕對式光學編碼器中,基於編碼的複雜度及安裝的困難度,相較之下不符合成本利益,故本研究發展一絕對式光學編碼器來突破此困境。
本研究以多進制灰階編碼作為編碼設計之出發點,透過多種不同反射率之灰階光柵條紋及透過量測多條光柵條紋之方式將編碼單元擴增,並以類似格雷碼的編碼方式,將連續兩位置之編碼編篡成僅有一位元的差異,利用此方法降低粗誤差的發生機率。簡而言之,完整的編碼內容為各軌道依不同週期地將灰階數值按順序再倒序的方式排列,成功地排列出一多軌道的絕對式編碼。 本研究將位置訊號利用影像感測器擷取絕對式編碼尺的圖樣,並從擷取的影像中進行處理與分析。而輸出的訊號相較於傳統的二進制絕對式編碼,因以多進制的編碼方式,可以於相同的軌道數量中編排出更多的絕對位置,再經數值運算後得到最終的位置訊號。也因多進制的編碼方式更容易地將編碼數量提升,因此適用於長距離之位置迴授系統。而實驗以九進制絕對式編碼之測量結果探討本研究之多進制絕對式光學編碼器的可行性,並分析誤差產生的原因及影響,奠定此編碼方式的理論基礎。 | zh_TW |
dc.description.abstract | An encoder is an opto-electro-mechanical device that reads the motion and converts the motion into electrical signals. It is made up of a light source, a designed code disc to represents position information and a sensor to convert the coded information into electrical signals. Depending on the design of code disc, there are two main type of encoders: incremental and absolute. In operations, when an increment encoder is started, the system has to move to a reference mark as a home position and an absolute encoder indicates the current position so it does not require home operations. However, absolute encoders are usually more expensive than incremental encoders, because of the complicated code disc and the difficulty of installation. Therefore, the research develops an absolute encoder to break through the situation.
The research based on the q-ary absolute coding method, and the coding units increased by using many of different reflective grating fringe and multi-fringe measuring method. Like Gray code, this q-ary absolute code’s adjacent code number differ in only one bit (binary digit). This means that, it can prevent the coarse error from the measurement. The research develops an image absolute encoder based on the image texture. The captured image consists of pixels which differ from gray level then converted into position data by using image processing algorithm. The output signal is a kind of q-ary code that could involve more code number compared to the traditional binary code. Therefore, it would be applied to the long distance applications. Experimental results verified that q-ary absolute coding’s feasibility and mapped out the explanation to the detecting error of the image. | en |
dc.description.provenance | Made available in DSpace on 2021-07-11T14:44:30Z (GMT). No. of bitstreams: 1 ntu-105-R03525032-1.pdf: 3402496 bytes, checksum: 80de9c0ea5b5ca5d5dc16fb3e8230a10 (MD5) Previous issue date: 2016 | en |
dc.description.tableofcontents | 摘要 i
Abstract ii 目錄 iii 圖目錄 v 表目錄 viii 第一章 緒論 1 1.1 研究背景與動機 1 1.2 研究目的及方法 2 1.3 研究方法 3 1.3.1 絕對式編碼 3 1.3.2 量測系統 3 1.3.3 訊號處理與分析 3 1.4 論文架構 5 第二章 絕對式光學編碼器之原理 6 2.1 編碼器之簡介 6 2.2 編碼器之分類 7 2.3 增量式光學編碼器 9 2.4 絕對式光學編碼器 10 2.5 絕對式編碼之文獻探討 11 2.6 絕對式編碼小結 17 第三章 多進制絕對式編碼及影像分析原理 18 3.1 本研究之絕對式多灰階編碼 18 3.2 光柵條紋之設計 18 3.2.1 光偵測器與光柵條紋之對位關係 19 3.2.2 多灰階編碼 21 3.2.3 多灰階編碼之偵錯、容錯方法 23 3.2.4 多灰階編碼之絕對位置輸出 26 3.3 數位影像系統原理 27 3.3.1 數位影像系統架構 27 3.3.2 數位影像擷取 30 3.3.3 數位影像處理 33 第四章 實驗架構 37 4.1 光學量測架構 37 4.2 影像處理與分析架構 38 4.3 本研究之絕對式編碼限制 42 第五章 實驗結果與討論 44 5.1 絕對式多進制灰階編碼及量測結果 44 5.1.1 二轉五進制編碼結果 44 5.1.2 二轉五進制編碼量測結果 45 5.1.3 三轉九進制編碼結果 47 5.1.4 三轉九進制灰階編碼量測結果 48 5.2 結果與討論 53 第六章 結論與未來展望 54 6.1 結論 54 6.2 未來展望 55 參考文獻 56 | |
dc.language.iso | zh-TW | |
dc.title | 以多進制灰階編碼原理研製絕對式線性光學編碼器 | zh_TW |
dc.title | Development of an Absolute Optical Encoder with q-ary Gray Code Principle | en |
dc.type | Thesis | |
dc.date.schoolyear | 104-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 鄭正元(Jeng-Ywan Jeng),張復瑜(Fuh-Yu Chang),吳乾埼(Chyan-Chyi Wu),李佳翰(Jia-Han Li) | |
dc.subject.keyword | 編碼器,絕對式編碼,多進制編碼,影像擷取,影像分析, | zh_TW |
dc.subject.keyword | encoder,absolute code,q-ary code,image acquisition,image processing, | en |
dc.relation.page | 57 | |
dc.identifier.doi | 10.6342/NTU201601826 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2016-08-03 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 工程科學及海洋工程學研究所 | zh_TW |
顯示於系所單位: | 工程科學及海洋工程學系 |
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