Research and Application of Virtual Simulation Technology in the Aerospace Bearing Design and Manufacture

Abstract

Abstract.Bearings are widely used in aerospace and other fields, its performance directly affects the production efficiency and safety. Nowadays, virtual simulation technology has become an indispensable part of intelligent manufacturing field. As a virtual simulation technology, FEA has been widely used in bearing design. China needs to import many aerospace bearings every year in aerospace area, Chinese national defense and other high precision technology is limited because the blockade of advanced bearing technology. We can use dynamics modeling and virtual simulation technology to achieve the predictive design, and strive to achieve foreign level. In this paper, the author proposed a method of bearing design based on virtual simulation technology. The factors of bearing which affect the dynamic characteristics are considered, the process of design bearing based on virtual simulation is also considered. According to the different design parameters, the simulation results are used to verify the rationality, these can reduce the cost and improve the reliability. The virtual simulation technology is applied to design the 7016C angular contact ball bearing which used in aerospace area, and supported decision-making in structure design and data analyze. Finally, The feasibility of this method is verified by experiments..

Emotional Interactive Simulation System of English Speech Recognition in Virtual Context

“…e test results can achieve a recognition rate up to about 75%. e authors in [16,17] have also conducted fruitful research on feature vector decomposition and fusion of speech emotion signals and feature vector dimensionality reduction, proposed improved classification quadratic functions, and improved Mahalanobis distance and other classification algorithms, and recognized in experimental data the good test performance on the rate. Currently, commonly used speech synthesis methods are parameter synthesis method and waveform stitching synthesis method [18,19].…”