Aiming at removing the noise of the vibration signal

a new mathematical morphological filter method is proposed

the proposed filter is optimized by particle swarm optimization algorithm.Firstly

the morphological filter is constructed according to the characteristic of morphological algorithm.Then

the particle swarm optimization algorithm is used to select the adaptive structural element

which has an important role in morphological filter

and the maximum signal-noise-ratio is used as the criteria of the optimization process

achieving to get the optimal structural element.Finally

the simulation experiment and the bearing fault signal are analyzed

the results show that the optimal morphological filter is better in removing the noise than the wavelet method and the traditional morphological filter methods

the proposed method can effectively reduce the noise of the mechanical equipment.