Identification of mechanical systems in the frequency area

Mathematical models of a mechanical system in the time and frequency areas, which are realized by various software complexes, are considered. The results of identification of the experimental amplitude-frequency characteristic using the software complex IMS-I are presented. It is established that the design analysis method, in which one natural frequency (one mode) is considered does not provide the dynamic quality of the mechanical system, it is necessary to change the parameters for all available natural frequencies for analysis.