Abstract
The Entropic stochastic resonance (ESR) is the appearance of stochastic resonance (SR) when the dynamics of aBrownian particle takes place in a confined medium. The presence of unevenboundaries, giving rise to anentropic contribution to the potential, may upon application of a periodic driving force result in anincrease of thespectral amplification at an optimum value of the ambient noise level.The ESR provides a way for weak signal detection, and this paper applies it to bearing fault diagnosis. Preliminary numerical simulation andexperimental result of practical bearing test signal show that the ESRhas a good effect on weak feature extraction and bearing fault detection.
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