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Dynamics and frequency and voltage control of downhole oil pumping system
ArticleAbstract: The motor load torque of a typical pumping system employed in onshore oil-fields has a fluctuating ‘Palabras claves:Dynamics, Electro-mechanical model, ENERGY SAVING, Frequency and voltage control, Pumping systemAutores:Aphale S.S., Dong S., Li W., Marian Wiercigroch, Vaziri V.Fuentes:scopusParametric analysis of a sliding-mode controller to suppress drill-string stick-slip vibration
ArticleAbstract: Despite a significant research effort to understand and mitigate stick-slip in drill-strings, this pPalabras claves:DELAY, Drill string, Parametric analysis, robustness, Sliding-mode control, Stick-slipAutores:Aphale S.S., Kapitaniak M., Marian Wiercigroch, Oladunjoye I.O., Vaziri V.Fuentes:scopus