Rotating machineries account for 80 percent of the total large mechanical equipment. To optimize their work efficiency, research of the simulation on improving the accuracy of life prediction which is about key components in rotating machineries was conducted. Firstly, Confidential Value (CV) can quantify working condition. And then make the training set of the original CV data be in Wavelet Decomposition (WD). Next, the data transformation and accumulative integral can improve GM (1,1) by the optimization of the smooth ratio and background value; improved GM (1,1) is in combination with Adaptive Neuro-Fuzzy Inference System (ANFIS) for new prediction model to predict the CV. Ultimately, improved WD-GM-ANFIS is compared with GM(1,1), ANFIS and LSTM network in three performance indicators, meanwhile, contrast improved WD-GM-ANFIS with Full Convolutional Layer Neural Networks (FCLNN) algorithm and Unscented Particle Filter (UPF) algorithm in failure time prediction. Three indicators' averages of the new model are all better than the other three single models; failure time prediction of the new model is more precise than the two improved algorithms.
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