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مجله کنترل فرآیند
جزئیات رویداد
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  • pid controller frequency-domain tuning for stable, integrating and unstable processes, including dead-time

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    • تاریخ ارائه: 1392/01/01
    • تاریخ انتشار در تی پی بین: 1392/01/01
    • تعداد بازدید: 631
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    • شماره تماس دبیرخانه رویداد: -
     in the present paper a new tuning procedure is proposed for the ideal pid controller in series with the first-order noise filter. it is based on the recently proposed extension of the ziegler–nichols frequency-domain dynamics characterization of a process gp(s). measured process characteristics are the ultimate frequency and ultimate gain, the angle of the tangent to the nyquist curve of the process at the ultimate frequency, andgp(0). for a large class of processes the same tuning formulae can be effectively applied to obtain closed-loop responses with predictable properties. load disturbance step responses without the undershoot and reference step responses with negligible overshoot are obtained by analyzing a test batch consisting of stable, integrating and unstable processes, including dead-time and oscillatory dynamics. the proposed tuning makes possible to specify the desired sensitivity to the high frequency measurement noise and the desired maximum sensitivity. comparison with the optimal ideal pid controller in series with the first-order noise filter is presented and discussed. the extension of the proposed method to the pi controller tuning is direct. comparison with the optimal pi controller is presented and discussed.

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