Instruments and Systems: Monitoring, Control, and Diagnostics Annotation << Back Modeling of the measuring system for a given structure T.G. SAMKHARADZE, A.I. ZHELONKIN Annotation. Analysis of various dynamic structures is carried out practically on simplified mathematical models. The task is to determine the values of the coefficients of an approximating expressions and minimize errors. The methods of calculation of parameters of fractionalrational approximations in advance a fixed structure provided minimization error approximation to the exact expression of the transfer function. Transition to the simplified methods blocks allow you to save the quality features of investigated objects with concentrated and distributed parameters. Identification methods used in conditions where there is no enough information about the source data. A priori information about the structure of the object and the element-by-element simulation. Finite approximations are organized based on the modal representation of the object. Analysis of the accuracy of the approximation obtained comparison runs transition functions, derived by Laplace inverse transform. To improve the accuracy of the approximation. Keywords: Mathematical model, approximations, method, identification, information, accuracy, function, process, dynamic, conversion. Contacts: - Pp. 46-49.