Title :
Initial estimates of Wiener and Hammerstein systems using multisine excitation
Author :
Crama, Philippe ; Schoukens, Johan
Author_Institution :
Dept. TW - ELEC, Vrije Universiteit Brussel, Brussels, Belgium
fDate :
12/1/2001 12:00:00 AM
Abstract :
This paper presents fast methods to get an initial estimate of Wiener or Hammerstein systems. For this purpose, a special excitation signal is introduced: the random phase multisine. Its properties are briefly stated and used in both methods. The methods are tested with simulations and compared with similar methods available in the literature
Keywords :
frequency response; nonlinear systems; parameter estimation; splines (mathematics); time-domain analysis; transfer functions; B-splines; Hammerstein systems; Wiener systems; broadband excitation; cost function optimization; frequency response function; initial estimate; nonlinear system identification; parametric linear model; power spectrum; random phase multisine signal; sampling frequency; time domain; transfer function; Cost function; Frequency response; Noise level; Noise measurement; Nonlinear dynamical systems; Nonlinear systems; Optimization methods; Signal processing; Signal to noise ratio; Testing;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
