• classification of dynamic processes and pid controller tuning in a parameter plane

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/01/01
    • تاریخ انتشار در تی پی بین: 1392/01/01
    • تعداد بازدید: 737
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     a quadruplet, defined by the ultimate frequency ωu, the ultimate gain ku, the angle φ of the tangent to the nyquist curve at the ultimate frequency and the gain gp(0), is sufficient for classification of a large class of stable processes, processes with oscillatory dynamics, integrating and unstable processes gp(s). from the model defined by the above quadruplet, a two parameter model gn(sn) is obtained by the time and amplitude normalizations. two parameters of gn(sn), the normalized gain ρ and the angle φ, are coordinates of the classification ρφ parameter plane. model gn(sn) is used to obtain the desired closed-loop system performance/robustness tradeoff in the desired region of the classification plane. tuning procedures and tuning formulae are derived guaranteeing almost the same performance/robustness tradeoff as obtained by the optimal pid controller, applied to gp(s) classified to the same region of the classification plane. validity of the proposed method is demonstrated on a test batch consisting of stable processes, processes with oscillatory dynamics, integrating and unstable processes, including dead-time.

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