Title :
Auxiliary signal design for robust multimodel identification
Author :
Nikoukhah, Ramine ; Campbell, Stephen L. ; Horton, Kirk G. ; Delebecque, François
Author_Institution :
Inst. Nat. de Recherche en Inf. et Autom., Le Chesnay, France
fDate :
1/1/2002 12:00:00 AM
Abstract :
Under the assumption that one of two given linear models is the real underlying model of the system, a proper auxiliary signal is defined as an input signal that allows the selection of the correct model. Under the assumption that model noises have bounded energy, the separability index is defined as the inverse of the energy of the proper auxiliary signal of least energy. A method for the computation of this index and the construction of the auxiliary signal is presented. Finally, an efficient procedure for online identification, called the "hyperplane test", is developed
Keywords :
failure analysis; identification; modelling; reliability theory; signals; stability; auxiliary signal design; auxiliary signal energy; bounded energy; failure detection; hyperplane test; input signal; linear models; model noise; model selection; online identification; robust multimodel identification; separability index computation; underlying system model; Kirk field collapse effect; Riccati equations; Robust control; Robustness; Signal design; Signal detection; Signal processing; System identification; System testing; Uncertainty;
Journal_Title :
Automatic Control, IEEE Transactions on
