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To achieve high speed and high acceleration, flexible planar parallel manipulators (PPM) are typically designed with lightweight linkages, but hence suffer from unwanted structural vibration, diminishing positioning accuracy. This paper addresses the dynamic modeling and efficient modal control for vibration suppression of a PPM with three flexible linkages actuated by linear ultrasonic motors (LUSM)...
Flash-based solid-state drive has been proved to be a competitive alternative to mechanical disk for its high performance and low power consumption. But SSD still suffers from relatively high price and low density, which calls for consolidating device resource to bring down the cost of deploying expensive dedicated flash-based storage systems for specific applications. Within such environment, applications...
A new method based on the predicting of phase difference (PPM) is developed to extract phase slowness from multi-channel dispersive waves. This method is verified by synthesized multipole array waveforms and field data measured by a multipole array acoustic logging tool (MPAL). The results show that this method is fast and stable for dispersion analysis.
Logging is an important and commonly-used approach to improving energy efficiency and performance of storage systems. Reliability is one of the most important metrics to evaluate the storage systems. However, reliability modeling of energy-efficient logging architectures based on RAID10 systems have not yet been explored much. In this paper, we model the reliability of two typical energy efficient...
The supplier selection with uncertain interval information is modeled as a multiple criteria decision making problem in this study. After transforming the interval decision matrix into a definite one, by which the entropy of the criteria would be the maximal, a linear programming model is set up to determine the criterion weights by maximizing the overall value of all alternatives. Based on the criterion...
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