Abstract:
In such cases, for serviceability estimation there are used, for instance, restrictions on displacement of roots in a complex plane, characteristic parameters of transient processes etc. However, the technical object, except for the linear ones, may contain one or more nonlinear elements. In these cases, linear methods cannot be applied; otherwise big errors will be received when estimating the parameters. But it is not acceptable to use exact methods of calculation for the analysis of nonlinear parts. Except for other lacks, this way is unacceptable also because still and consequently, that it should to use two different mathematical devices, that not always allow to pick up features of dynamic phenomena in the investigated object.