Evaluation points of the complex frequency characteristics of a dynamic object using pulse testing impact

In the report we consider the problem of periodic identification of dynamic object is a single test pulse at a fixed interval of observation. The authors analyze the decomposition in Fourier series of the observed signal at the output of the object and the signal at the input to the observation interval. It is shown that the relationship of the amplitudes of the harmonics with the same number of output and input signals with certain accuracy can indicate the coordinates of corresponding points of complex frequency characteristics of the object. This precision depends on the observation interval and the inertial properties of the object. The advantage of this approach is its good noise immunity, and relatively low time for identification. Conditions imposed on the observed duration of the transition process at the output of the dynamic object with the given parameters of the testing pulse, which allows the required accuracy to estimate the coordinates of complex frequency characteristics of the industrial site and to adapt the controller settings. (paper)