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- W2009898982 abstract "Volterra series provides a platform for non-linear response representation and definition of higher order frequency response functions (FRFs). It has been extensively used in non-parametric system identification through measurement of first and higher order FRFs. A parametric system identification approach has been adopted in the present study. The series response structure is explored for parameter estimation of polynomial form non-linearity. First and higher order frequency response functions are extracted from the measured response harmonic amplitudes through recursive iteration. Relationships between higher order FRFs and first order FRF are then employed to estimate the non-linear parameters. Excitation levels are selected for minimum series approximation error and the number of terms in the series is controlled according to convergence requirement. The problem of low signal strength of higher harmonics is investigated and a measurability criterion is proposed for selection of excitation level and range of excitation frequency. The procedure is illustrated through numerical simulation for a Duffing oscillator. Robustness of the estimation procedure in the presence of measurement noise is also investigated." @default.
- W2009898982 created "2016-06-24" @default.
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- W2009898982 date "2003-12-01" @default.
- W2009898982 modified "2023-09-23" @default.
- W2009898982 title "Non-linear parameter estimation with Volterra series using the method of recursive iteration through harmonic probing" @default.
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- W2009898982 doi "https://doi.org/10.1016/s0022-460x(02)01537-7" @default.
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