Results 31 to 40 of about 91,489 (305)
Journal of Marine Science and EngineeringThis paper investigates the constrained nonlinear thrust allocation problem for the dynamic positioning system of vessels. Considering the wear, energy consumption, and allocation error of thrusters, a constrained nonlinear mathematical optimization ...
Yulong Tuo +4 more
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Towards Efficient Full Pose Omnidirectionality with Overactuated MAVs
, 2018 Omnidirectional MAVs are a growing field, with demonstrated advantages for aerial interaction and uninhibited observation. While systems with complete pose omnidirectionality and high hover efficiency have been developed independently, a robust system ...
CW Wampler +4 more
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Thrust Allocation Control of an Underwater Vehicle with a Redundant Thruster Configuration
MathematicsThis paper presents a fault-tolerant thruster configuration scheme and a thrust control allocation strategy for an underwater vehicle. First, to accommodate the vehicle’s flexible spatial motion capabilities and address potential thruster failures, an 8 ...
Liping Deng, Jianguo Tao
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Constitutional Bait and Switch: Executive Reinterpretation of Arms Control Treaties [PDF]
, 1989 A new constitutional crisis has been thrust upon the American body politic. The crisis arises from a dispute concerning the allocation of legal authority for the interpretation, and especially for the reinterpretation, of international agreements. Once a
Koplow, David A
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Advanced Functional Materials, EarlyView.This work explores Li‐substituted P2 layered oxides for Na‐ion batteries by crystallographic and electrochemical studies. The effect of lithium on superstructure orderings, on phase transitions during synthesis and electrochemical cycling and on the interplay of O‐ versus TM‐redox is revealed via various advanced techniques, including semi‐simultaneous
Mingfeng Xu +5 more
wiley +1 more source
DISCUSSION AND PRACTICAL ASPECTS ON CONTROL ALLOCATION FOR A MULTI-ROTOR HELICOPTER [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012 This paper presents practical methods to improve the flight performance of an unmanned multi-rotor helicopter by using an efficient control allocation strategy. The flying vehicle considered is an hexacopter.
G. J. J. Ducard, M.-D. Hua
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Verification of successive convexification algorithm [PDF]
, 2016 In this report, I describe a technique which allows a non-convex optimal control problem to be expressed and solved in a convex manner. I then verify the resulting solution to ensure its physical feasibility and its optimality.
Berning, Andrew Walter, Jr.
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Advanced Materials, EarlyView.AI‐Assisted Workflow for (Scanning) Transmission Electron Microscopy: From Data Analysis Automation to Materials Knowledge Unveiling. Abstract (Scanning) transmission electron microscopy ((S)TEM) has significantly advanced materials science but faces challenges in correlating precise atomic structure information with the functional properties of ...
Marc Botifoll +19 more
wiley +1 more source
Journal of Marine Science and EngineeringRemotely operated vehicles (ROVs) typically rely on over-actuated propulsion systems to achieve precise dynamic positioning and maneuvering in complex underwater environments.
Lu Wang +6 more
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Thruster Allocation for Dynamical Positioning [PDF]
, 2010 Positioning a vessel at a fixed position in deep water is of great importance when working offshore. In recent years a Dynamical Positioning (DP) system was developed at Marin [2].
Blank, E +2 more
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