Title :
Frequency response of uncertain systems with interval plants
Author :
Bartlett, Andrew C. ; Tesi, Alberto ; Vicino, Antonio
Author_Institution :
Inst. for Flight Syst. Dynamics, German Aerosp. Res. Establ., Oberpfaffenhofen, Germany
fDate :
6/1/1993 12:00:00 AM
Abstract :
Frequency domain properties of uncertain rational functions depending on two independent interval polynomials are investigated. Several simplifications for efficient computation of the envelope of the Nyquist plots of the uncertain family are reported. Stronger computational reduction results are given for the Bode magnitude and phase plots of an interval plant-controller family of transfer functions. These results allow for a clear understanding of the extremality properties of several frequency domain performance specifications commonly used in control system design
Keywords :
Bode diagrams; Nyquist diagrams; control system analysis; frequency response; frequency-domain analysis; transfer functions; Bode magnitude; Nyquist plots; control system synthesis; frequency domain; frequency response; interval plants; phase plots; polynomials; transfer functions; uncertain systems; Feedback; Frequency domain analysis; Frequency response; Modems; Open loop systems; Polynomials; Robust control; Robust stability; Uncertain systems; Uncertainty;
Journal_Title :
Automatic Control, IEEE Transactions on
