Finite-frequency Identification: Selftuning of Test Signal
نویسنده
چکیده
A linear stable plant with unknown coefficients in the presence of an unknown-but-bounded disturbance is considered. The finite-frequency technique for identification of the plant makes use of a test signal with minimal number of harmonics (this value is equal to the plant state-space dimension). It is shown that if frequencies of the test signal are chosen outside of a natural frequencies band (where log magnitude of the plant has corner frequencies), then identification results may very strongly depend on errors of the frequency characteristics determination. In order to find an estimate of the boundaries of the natural frequencies band, a procedure of selftuning of test signal frequencies is given. Test signal amplitudes are selftuned as well. It provides the prescribed boundaries of the input and output plant. Copyright c ©2005 IFAC
منابع مشابه
System GAMMA: the directives of finite-frequency identification
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