パルス幅変調方式サーボ機構の安定性 : 第1報, フィードバック回路が比例要素である場合

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  • Stability Problems of a Servomechanism Operated by PWM Mode : Part 1, The Case when a Feedback Circuit Consists of a Proportional Element
  • パルスハバ ヘンチョウ ホウシキ サーボ キコウ ノ アンテイセイ 1

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In a servomechanism operated by the PWM mode, the output displacement contains the dither with the same period as the carrier pulse. When the gain constant of the feedback circuit becomes high, the dither component is feed back and the wave shapes of the output displacement are distorted. The wave shapes of the dither are dependent on the ratio of the time lag of the pulse transmission to the pulse period. In this paper, the stability of the dither of discussed for the case when the feedback circuit consists of a proportional element. The analytical results were verified by the experiments which were carried out with a two-stage electrohydraulic servomechanism operated by the PWM mode.

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