抄録
In the so-called Paynter-Takahashi method, or in the moment method to make the dynamic model Maclaurin expansion of the system transfer function is used for evaluating the model parameters. However, it is often difficult to get the accurate determination of the co-efficients of expansion by the experiments under the influence of the drift in the response data.
As a counter-measure to this difficulty, use of Taylor expansion around a point s=σ, with σ real and positive, is found very effective to improve the accuracy of the resulting model in a wider frequency range.
In this report, this new model forming technique, that is a generalized moment method, is discussed in detail. Effort is especially focussed on the establishment of a routine technique through which the most adequate value of the σ is always obtained, irrespective of the nature of the system tested and the conditions of the dynamic response experiment.
