WebNational Center for Biotechnology Information WebApr 5, 2024 · When a bearing fails, the bearing components form a sudden shock pulse through the fault site and cause the bearing and adjacent components to vibrate, so that …
Fault diagnosis method of fan bearing at non- extended end of …
WebJun 28, 2024 · When the bearing is faulty, there will be periodic shock waves in the vibration signal, which makes the signal show strong sparse characteristics. When the vibration signal contains more noise signals, the periodic shock characteristics in the vibration signal are not obvious, which makes the vibration signal less sparse. WebJan 1, 2024 · When a bearing has a defect, a series of shocks are induced by the collision of fault point and the matching ball. The repetition frequency related to the bearing dimension and the rotating frequency is called FCF. The envelope spectrum obtained by amplitude demodulation can effectively reveal the bearing characteristic frequency. dowagiac weather radar
(PDF) Bearing Fault Diagnosis Using Motor Current Signature …
WebFeb 26, 2024 · In addition, the experiments also compare the bearing fault diagnosis method of resonant sparse decomposition combined with wavelet decomposition, and the results show that the selection of variational modal decomposition in the envelope demodulation session can highlight the fault characteristic frequencies better than the … WebMar 25, 2024 · Aiming at the difficulty of identifying weak fault of rolling element bearing (REB) accurately using only one single fault signal evidence domain, a multi-source information deep fusion diagnosis method for REB based on multi-synchrosqueezing transform (MSST) and deep residual convolution neural network (DRCNN) is presented … WebFeb 1, 2024 · The vibration signal collected in the industrial field usually has a low signal-to-noise ratio, which is not enough for the recognition of faults. Aiming at the difficulty of bearing fault... civil war staff officers