Limiting Zeros of Sampled Systems with the Fractional Order Hold

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  • 分数次ホールドによるサンプル値系の極限零点
  • ブン スウジ ホールド ニヨル サンプルチケイ ノ キョクゲン レイテン

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This paper is concerned with the zeros of sampled-systems which are composed of a fractional order hold, a continuous-time plant and a sampler in series. The locations of the zeros are investigated when the sampling period tends to zero. Further, the stability conditions of the zeros for sufficiently small sampling periods are derived. The fractional order hold has an advantage to the zero order hold on the stability of the discrete zeros when the relative degree of a continuous-time transfer function is two.

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