Gaussian mixture hidden Markov model and regression analysis remaining life prediction method
A hidden Markov and Gaussian mixture technology, which is applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as poor real-time performance, high cost, and long prediction period
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[0059] Such as figure 1 As shown, the Gaussian mixture hidden Markov model and regression analysis method of the present invention for remaining life prediction. This assessment methodology includes:
[0060] (1) Use the wavelet packet algorithm to decompose and extract the feature vector. The equipment condition monitoring signal is processed by wavelet packet decomposition, and the characteristic information of different failure modes of parts is extracted as the observation value of Gaussian Mixture Hidden Markov Model (GMM-HMM).
[0061] (2) Establish a Gaussian mixture hidden Markov model library of different failure modes. The historical data of different failure modes is used for sample training, which is used to generate hidden Markov model libraries under different states of key components, which belongs to the offline learning stage.
[0062] (3) Establish failure time models of components with different failure modes. The probability statistics of the time histo...
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