ディジタルサーボ系におけるサンプリング間隔の影響に関する基礎的考察

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  • Fundamental study on effects of sampling period to digital servo system.
  • ディジタル サーボケイ ニ オケル サンプリング カンカク ノ エイキョウ ニ

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This paper deals with an analysis of effects of sampling period to a digital servo system from a standing point of a frequency response and a transient characteristics. The servo system to be analyzed here has a scheme of a standard second-order continuous data system, whose characteristics are specified by a proportional gain and a time constant. The main control process of proportional operation is supposed to be realized by a digital data system acting in a sampling period with an one-sample delay. At first, all parameters of the system are normalized with respect to the time constant. Then, the relationships between the normalized sampling period and the normalized proportional gain (and also the normalized cut-off frequency) defined by a phase margin are shown by charts. Moreover, the same relationships defined by a critical damping condition of a transient response are described. Furthermore, the digital servo system whose one-sample delay action could be compensated is also analyzed.

収録刊行物

  • 精密工学会誌

    精密工学会誌 56 (6), 1100-1104, 1990

    公益社団法人 精密工学会

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