In this paper we study the response of single-degree-of-freedom with cubic, quartic and quintic nonlinearities to an amplitude-modulated excitation whose carrier frequency is much higher than the natural frequency of the system. The only restriction on the amplitude modulation is that it contains frequencies much lower than the carrier frequency of the excitation. The method of multiple scales ...

The knowledge of the dynamic state and structure system allows describing its behavior creating prognosis models in function evolution time, based on model technical symptoms growth. Most often, there are no known equations behaviors which accounts for need to apply new tools examine state. In this article authors shows chosen problems diagnosis with use identification diagnostics methods such ...

The ability of a DFT filterbank frequency domain filter to effect time domain delay is examined. This is achieved by comparing the quality of equalisation using a DFT filterbank frequency domain filter with that possible using an FIR implementation. The actual performance of each filter architecture depends on the particular signal and transmission channel, so an exact general analysis is not p...