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This study proposes a multi-level trajectory analysis method for modeling traffic behavior from an ego-centric view, where on-road vehicle trajectories are collected based on the authors' previous studies of an on-board system consisting of multiple 2D lidar sensors. From an input set of trajectories, a set of hot regions (topics) that trajectory points most frequently present are first discovered...
This paper researches a kind of anti-surge control strategy for centrifugal compressor. In order to solve the problem of narrow operating range of the traditional anti-surge control, model predictive control is introduced. First ratio and mass flow nonlinear predictive models of compressor's pressure are developed by LS-SVM (Least Square Support Vector Machine). Then the anti-surge predictive controller...
Solder joint integrity is recognized as a key issue in the reliability of electronic devices. In the past decades, SnAgCu eutectic based solders are replacing SnPb eutectic solders in the electronics industry. Although the Pb-free solder is usually regarded as having a higher melting temperature compared with traditional Pb-Sn eutectic solder, solder joints were generally operated at a high homologous...
Solder joint integrity is recognized as a key issue in the reliability of electronic devices. In the past decades, SnAgCu eutectic based solders are replacing SnPb eutectic solders in the electronics industry. Although the Pb-free solder is usually regarded as having a higher melting temperature compared with traditional Pb-Sn eutectic solder, solder joints were generally operated at a high homologous...
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