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    題名: Diffractive Laser Optical Encoder with High Tolerance to High-speed Mechanical Runout
    其他題名: 對機具高速運動偏擺具高對位公差之繞射式雷射線性光學尺
    作者: 吳乾埼;Wu, Chyan‐Chyi;李世光;Lee, Chih‐Kung;呂秀雄;Lu, Shui‐Shong;陳文中;Chen, Wen‐Jong;楊青桑;Yang, Ching‐Sang;謝啟堂;Hsieh ,Chi‐Tang
    貢獻者: 淡江大學機械與機電工程學系
    關鍵詞: high‐speed mechanical runout;error analysis;1‐x telescope;conical diffraction
    日期: 2001-04
    上傳時間: 2013-07-11 11:53:39 (UTC+8)
    出版者: Taipei : Chinese Institute of Chemical Engineers
    摘要: This paper is concerned with the design of a laser linear encoder with high head‐to‐scale alignment tolerance. It adopts 1-x telescope design that can increase by 6 to 20 times the head‐to‐scale tolerance of existing encoders of the same class. The optical design of the laser encoder can avoid effects from differences in polarization diffraction efficiencies. In other designs the non‐uniformity of the temperature field within the head‐to‐scale range yields a nonzero initial phase and thus decreases the measurement accuracy of the system. The misalignment of the polarizers for the circular polarization interferometer configuration makes for both inclined and elliptical quadrature signals in the output. For an encoder system which adopts an arctangent algorithm, this effect may lower the measuring resolution. The resolution of our laser encoder design is verified by experiments.
    關聯: Journal of the Chinese Institute of Engineers=中國工程學刊 24(4), pp.419-429
    DOI: 10.1080/02533839.2001.9670639
    顯示於類別:[機械與機電工程學系暨研究所] 期刊論文

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