Nonflammable
发表于 2025-3-25 06:47:23
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exophthalmos
发表于 2025-3-25 07:35:18
Neutral-Type Time-Delay Systems: Theoretical Backgrounde wide range of existing tools for the stability analysis of time-delay systems. This chapter provides the main theoretical elements to address the analysis of the qualitative dynamic response and stability of the drilling system in the framework of NFDE.
Obituary
发表于 2025-3-25 11:50:37
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预示
发表于 2025-3-25 17:39:57
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charisma
发表于 2025-3-25 23:42:43
Book 2015s of the system-dynamic response and the elimination of the most damaging drill string vibration modes affecting overall perforation performance: stick-slip (torsional vibration) and bit-bounce (axial vibration). The text is organized in three parts..The first part, Modeling, presents lumped- and di
Ptosis
发表于 2025-3-26 01:26:33
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必死
发表于 2025-3-26 07:47:44
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Conquest
发表于 2025-3-26 12:22:35
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Jacket
发表于 2025-3-26 16:32:47
https://doi.org/10.1007/978-3-7091-2361-4gnal. Finally, a novel technique to reduce the stick-slip and bit-bounce is introduced. Based on the bifurcation analysis of the drilling system, a pair of low-order controllers aimed at eliminating axial and torsional coupled vibrations are designed: delayed proportional and delayed proportional-in
ODIUM
发表于 2025-3-26 20:48:36
,Bauausführung und Anwendung der Brunnen,ngular and axial velocities of the drilling bit to follow a constant reference path, a pair of controllers aimed at tackling the steering problem is designed. Simulation results show that the flatness-based feedback controllers, allowing an exponential convergence of the system trajectories, accurat