The Method of Fractal Filtering Wave of Vibrating Signal

摘要

The first step of the state control and fault diagnosis of mechanical equipment is sampling. Sampling by constant frequency, real signal and noise signal are picked up simultaneously. The frequency of noise signal is usually high and its amplitude is small. In order to acquire useful real signal, noise signal must be removed. This paper present a new method that fractal filtering wave is used to decrease noise signal. Through practice example, validity is verified.