Assessment of Data by a Second-Order Transfer Function (Classic Reprint) - Tapa dura

Sinopsis

Excerpt from Assessment of Data by a Second-Order Transfer Function

A theoretical method was developed to predict the frequency and time characteristics of ah. Unknown linear system, based only on the measured cw magnitude data, without requiring phase information The approach is to deduce an approximate analytical expression for the overall system magnitude square from the given measured magnitude data. The essential steps involved in achieving this purpose [1] may be summarized as follows: (i) identify the resonant frequencies and the maximum responses at these frequencies from the data, (ii) approximate each of the resonant regions by a component magnitude square with a simple second-order transfer function, (iii) sum up all of the component magnitude squares to yield an overall magnitude square to represent the unknown system, (iv) derive from it a set of multiple transfer functions in terms of the complex frequency, (v) determine the corresponding phases and impulse fimctions, and (vi)

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