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Aiming at nonlinearity and large dead-time of object to enhance dynamic quality of closed-loop system, this paper applies single neuron PID controller based on supervised Hebb learning algorithm, combined with correction of actual weighting coefficient, utilizes adaptive and self-learning ability of single neuron, tunes weights of controller and compensate for delay time, in order to improve its dynamic...
The fault signal of rolling bearing has the feature of nonstationarity. To apply wavelet packet to decompose and reconstruct the vibrational signals collected from testing at first, then the Hilbert operator was applied to achieve the purpose of demodulating the envelope. Finally, the signals after refining envelope spectrum will expand the information of defects. And then extracting the characteristic...
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