Methods of the Virtual Vibration Test Signals Modeling

The article substantiates the expediency of introducing a new class of vibration test signals — virtual standards of defective rotor units — into use. Possible ways of implementing such signals are described. The first method is to process the results of active experiments. The vibration signals recorded as a result of the experiment will be virtual standards. This method is very expensive. The second method is a synthesis of the time vibration signal. The task of the test signal formation involves modeling a complex signal from individual components. An analytical description of the time signal is given. A new method for obtaining vibration test signals by reconstructing a time signal from three types of spectra is considered. The results of mathematical modeling and experiments, as well as recommendations on the practical use of virtual test signals are presented.