Analysis of Time Domain and Frequency Domain of Mechanical Test Signals

Abstract

Mechanical signal processing is done by transforming some of the measurement signals, weakening the unwanted redundant signals in the mechanical
signal, filtering out the mixed noise interference, or turning the signal into a form that is easy to identify in order to extract its eigenvalues. The In this paper, the
time-frequency domain processing method of a mechanical signal is introduced. The simulated noisy period signal is constructed by Matlab, and the time-frequency
domain is processed. The signal filtering, correlation analysis, power spectrum analysis, and other methods of the characteristics and advantages.
Key words: Mechanical signal; noice interference; time-frequency domain processing