Title :
Elimination of frequency search from robustness tests
Author :
Sideris, Athanasios
Author_Institution :
Dept. of Mech. & Aerosp. Eng., California Univ., Irvine, CA, USA
fDate :
10/1/1992 12:00:00 AM
Abstract :
An example is given which demonstrates that the multivariable stability margin can be a discontinuous function of frequency. A method which checks for robustness without a frequency search and thus alleviates the associated difficulties is proposed. It is shown that robustness can be verified by solving only one multivariable stability margin problem, readily constructed from a state-space realization of the given plant
Keywords :
control system analysis; multivariable control systems; stability; state-space methods; discontinuous frequency function; multivariable control systems; multivariable stability margin; robustness tests; state-space realization; Aerodynamics; Aerospace engineering; Algebra; Feedback; Frequency; Polynomials; Robust stability; Robustness; Testing;
Journal_Title :
Automatic Control, IEEE Transactions on
