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    題名: Performance evaluation of a velocity observer for accurate velocity estimation of servo motor drives
    作者: Yang, Sheng-ming;Ke, Shuenn-jenn
    貢獻者: 淡江大學機械與機電工程學系
    關鍵詞: Servo motor;velocity estimation;velocity observer
    日期: 2000-01
    上傳時間: 2010-03-26 19:48:02 (UTC+8)
    出版者: Piscataway: Institute of Electrical and Electronics Engineers (IEEE)
    摘要: Because each of the position transducers commonly used in industry, i.e., encoders and resolvers, do not inherently measure an instantaneous velocity, some signal processing technique is generally required to improve the accuracy of velocity estimation at each sampling instant. This estimated signal is then used as the velocity feedback signal for the velocity loop control. The differential position technique commonly used in industry for velocity estimation suffers from a large quantization error and, therefore, limits the servo control loop bandwidth. This paper presents both the theoretical analysis and experimental verification of a scheme that uses a closed-loop observer for velocity estimation. The results have shown that the quantization error in the velocity feedback signal can be reduced dramatically when a closed-loop observer is used for velocity estimation. The results also shown that, at low speed, the velocity estimation could be improved with a simple compensation scheme
    關聯: IEEE transactions on industry applications 36(1), pp.98-104
    DOI: 10.1109/28.821803
    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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