Failure Prognosis of Complex Equipment with Multistream Deep Recurrent Neural Network

The failure prognosis is crucial for industrial equipment in prognostics and health management field. The vibration signal is the commonly used data for failure prognosis. The conventional prognostic approaches have limitations to handle the features extracted from the vibration signal because of the large data quantity, complex feature relations, and limited degeneration mechanisms. In this paper, a deep learning-based approach is proposed to predict the failure of the complex equipment. To supply plenty of features, three different domain features are extracted from vibration signals. Next, these features are preprocessed and reconstructed by arctangent normalization and data stream, respectively. Finally, a deep neural network, namely, multistream deep recurrent neural network (MS-DRNN) is built to fuse these features for failure target. The presented deep neural network is hybrid, involving recurrent layer, fusion layer, fully connected layer, and linear layer. To benchmark the proposed approach, several prognosis approaches are evaluated with the testing data from six large bearing datasets. Simulation results demonstrate that the prediction performance of the MS-DRNN-based approach is effective and reliable.