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http://dx.doi.org/10.5302/J.ICROS.2002.8.6.439

Model Reduction Algorithm Using Nyquist Curve in Frequency Domain  

조준호 (원광대학교 제어계측공학과)
김정철 (원광대학교 제어계측공학과)
김진권 (원광대학교 제어계측공학과)
최정내 (원광대학교 제어계측공학과)
황형수 (원광대학교 제어계측공학과)
Publication Information
Journal of Institute of Control, Robotics and Systems / v.8, no.6, 2002 , pp. 439-444 More about this Journal
Abstract
In this paper, a new model reduction method is proposed to obtain a reduced order model in the frequency domain. The method is developed based on the second-order plus dead time modeling technique. The initial value of the reduced model parameters can be obtained using this method coinciding four point(0, -$\pi$/2, -$\pi$, -3$\pi$/2) on the Nyquist curve. The optimal parameters of the reduced model is obtained through calculation procedure with three steps. It is shown that Nyquist curves and unit step responses of the reduced models of numerical examples closely agree with those of original models.
Keywords
Nyquist curve; model reduction;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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