Research on Vibration Signal De-noising of Gearbox Based on Quantum-Inspired Morphological Filter

Morphology filter is a kind of nonlinear filter differing from time or frequency domain method. It is a mathematical method based on integral geometry and random set. The effect of morphology filter relates closely to the selection of the structure element. In this paper, a new kind of constructing structural element is put forward. In this method, quantum theory is induced to improve traditional structure element. Diagnosis instance shows that the effect of quantum-inspired morphological filter is obvious in eliminating the random noise and keeping the useful signal information in the vibration signal.