実構造体における多次元方向温度伝導率のシステム同定 : その 1 スプライン関数および差分法によるシステム同定式の検討

概要

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The theory for the system identification of general thermal diffusivity has been explained by a closed-form solution of the thermal conduction equation. Up to now, solutions have been found only for the simplest cases, and system identification of multidimensional thermal diffusivity for actual structures has been impossible. System identification of actual, multidimensional thermal diffusivity is possible only by an approximation method. When system identification by an approximation method is performed, conditions and accuracy must be considered. This paper discusses the conditions and accuracy for the system identification of thermal diffusivity by the finite differential method, the spline method and modified forms of each of these methods. Conclusions of this paper are as follows; 1) System identification by the spline method is better than by the finite differential method. 2) The accuracy of the system identification is correlated to the input temperature data. 3) The modified identification methods are more accurate than the basic identification methods when the temperature variance increases (or decreases) simply. 4) The modified identification methods are more efficient when interpolation is used. 5) When system identification is performed, the accuracy and selection of input data can be obtained by graphic methods of input data and output of values for system identification equation.
社団法人日本建築学会の論文
1982-08-30