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This study combines finite element (FE) modeling and digital signal processing (DSP) to predict the fatigue life of a ball grid array (BGA) package mounted on the print circuit board (PCB) under a random vibration loading. First, the board-level assembly was modeled using ABAQUS. Then the modal analysis and a following power spectrum analysis were performed to calculate the power spectral density...
Based on the field failure mechanisms in smart electrical energy meters, field operating abnormal data and maintenance data were analyzed. Discrimination analysis for field data was screened for predicting residual life. Through thoroughgoing analysis, field failure data, failure modes, failure mechanisms and external inducing stresses as well as their features with time were analyzed. Then the degradation...
In this paper, a motion control problem for underwater gilders in longitudinal plane is considered. A recurrent neural network based model predictive control approach is developed. The model predictive control of underwater gliders is formulated as a time-varying constrained quadratic programming problem, which is solved by using a recurrent neural network called the simplified dual network in real-time...
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