To the question of the functional approximation of nonlinear characteristics of the objects of automatic control systems of the continuous technological processes

The authors suggest an approach to the dynamic model of an object of automatic control system by identification of of the object function and analysis of its nonlinear characteristics with the following study of the numerical characteristics of the obtained random values. The applied software tools provide for automation of the tasks for research on the basis of reliable methods (of Gauss-Newton). As a result it is possible to assess the reliability extend of the used transfer function at the task of the functional approximation for nonlinear characteristics of the object and to obtain quantitative values of the indicator that displays static characteristic from the time series of the full duration.