2. Measurements and analysis of diagnostic signals.
In most practical problems the specialists in vibration
and noise sources detection, vibroacoustical protection and decreasing the
equipment vibration and noise pay attention mainly to the linear models of
vibration and noise signals . As for you, your primary consideration is the
nonlinear signal models. Why? The question was asked by Naval College
specialists (Saint Petersburg, Russia).
The question is answered by
That is true, for the most practical problems, concerning
excitation and propagation of noise and vibration, the linear models of signals
are quite sufficient. But in vibroacoustical diagnostics the main problems
concern the analysis of the oscillati on forces creation process, and not the
process of conversion of these forces into the oscillations, the propagation of
these oscillations and their measurements. And the processes of these
oscillation forces creation, especially when the defects appear in the location
of these sources are as a rule significantly nonlinear. That is why the
nonlinear models of the signals are so efficient in diagnostics. By the same
reason it is much more complicated for the specialists in vibroacoustics to
orient the mselves in vibration diagnostics than for the specialists in machine
design and maintenance.