**3. Conclusion**

Rhythmogram and scatterogram allow you to explore the system in various modes, both standard and special. Therefore, it is able to provide additional diagnostic information about the state of the dynamic system. Thus, it can be hoped that such a diagnostic method may be of practical interest for assessing the characteristic dynamic features of the functioning of various mechanisms, devices, and apparatuses. Of course, the rhythmogram and the scatterogram will have a different look if another fragment of the record is chosen as a reference due to the change in SF. The issue of choosing a standard requires additional research with the involvement of diagnostic

#### **Figure 17.**

*Rhythmograms of signals num is the number of the maximum cross-correlation, T*1,*T*2,*T*3*—the duration of the intervals between the maxima of the cross-correlation.*


#### **Table 2.**

*Statistical parameters of rhythmograms.*

specialists in each specific case. The development of databases of various SF will allow for express diagnostics of devices. A feature of the method proposed and developed by us for processing quasi-periodic pulse signals using the Gauss-Hermite function is also *Principles of Diagnosing: The Technical Condition of the Bearings of the Gas Turbine… DOI: http://dx.doi.org/10.5772/intechopen.108400*

#### **Figure 18.**

*Scatterograms of signals,Tn Tn + 1—duration of the previous and subsequent intervals between the maxima of the cross-correlation.*

the possibility of varying the SF scale along the time axis. The scale variation makes it possible to detect not only violations of the system periodicity, but also a change in the shape of the signal pulses, which, in turn, provides additional means for detecting and predicting the development of a malfunction.

*Advances in Turbomachinery*
