特性変動をともなう1次おくれ+むだ時間系への<i>H</i><sub>∞</sub>補償器の適用 Application of <i>H</i><sub>∞</sub> Compensator to a First-order lag plus deadtime System with Changes in Characteristics
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This paper concerns a new design method of robust controllers which achieve robust stability as well as adequate disturbance rejection and tracking performance. In a previous paper, the robust PID controller has been designed for a plant which was commonly approximated by a first-order lag plus deadtime system. The PID parameters obtained by solving a two-disk type mixed sensitivity problem have been modified by contrast to those tuned by the traditional Ziegler-Nichols rule. The previous results showed that the proposed PID controller was effective enough for practical applications. In this paper we redesign a robust controller for the same plant with changes in characteristics of the plant through <i>H</i><sub>∞</sub> control theory. A practical and systematic design method for the <i>H</i><sub>∞</sub> compensator is proposed. This paper demonstrates a practical applicability of the <i>H</i><sub>∞</sub> compensator to a typical plant in process industries comparing with the control performance obtained by the robust PID controller.
- Transactions of the Society of Instrument and Control Engineers
Transactions of the Society of Instrument and Control Engineers 40(5), 493-501, 2004
The Society of Instrument and Control Engineers