Results 21 to 30 of about 3,734,396 (145)

A Constrained Non-Linear Model Predictive Controller for the Rotor Flux-Oriented Control of an Induction Motor Drive

open access: yesEnergies, 2020
Predictive controllers have been extensively studied and applied to electrical drives, mainly because they provide fast dynamic responses and are suitable for multi-variable control and non-linear systems.
Fabiano C. Rosa, Edson Bim
doaj   +1 more source

Robust Learning with Noisy Ship Trajectories by Adaptive Noise Rate Estimation

open access: yesSensors, 2023
Ship trajectory classification is of great significance for shipping analysis and marine security governance. However, in order to cover up their illegal fishing or espionage activities, some illicit ships will forge the ship type information in the ...
Haoyu Yang   +5 more
doaj   +1 more source

A model-free direct predictive grid-current control strategy for grid-connected converter with an inductance-capacitance-inductance filter [PDF]

open access: yesArchives of Electrical Engineering, 2023
The disadvantages of the conventional model predictive current control method for the grid-connected converter (GCC) with an inductance-capacitance-inductance (LCL) filter are a large amount of calculation and poor parameter robustness.
Leilei Guo   +4 more
doaj   +1 more source

Dynamics of Systems with a Discontinuous Hysteresis Operator and Interval Translation Maps

open access: yesAxioms, 2021
We studied topological and metric properties of the so-called interval translation maps (ITMs). For these maps, we introduced the maximal invariant measure and study its properties. Further, we study how the invariant measures depend on the parameters of
Sergey Kryzhevich   +4 more
doaj   +1 more source

Velocity-Free Attitude Control of Quadrotors: A Nonlinear Negative Imaginary Approach

open access: yesSensors, 2021
In this paper, we propose a new approach to the attitude control of quadrotors, by which angular velocity measurements or a model-based observer reconstructing the angular velocity are not needed.
Ahmed G. Ghallab, Ian R. Petersen
doaj   +1 more source

Optimized fractional low and highpass filters of (1 + α) order on FPAA [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 2020
This work proposes an optimum design and implementation of fractional-order Butterworth filter of order (1 + α), with the help of analog reconfigurable field-programmable analog array (FPAA).
N. Singh   +3 more
doaj   +1 more source

Robustness during Aging—Molecular Biological and Physiological Aspects

open access: yesCells, 2020
Understanding the process of aging is still an important challenge to enable healthy aging and to prevent age-related diseases. Most studies in age research investigate the decline in organ functionality and gene activity with age.
Emanuel Barth   +3 more
doaj   +1 more source

Degeneracy: a link between evolvability, robustness and complexity in biological systems [PDF]

open access: yes, 2010
A full accounting of biological robustness remains elusive; both in terms of the mechanisms by which robustness is achieved and the forces that have caused robustness to grow over evolutionary time.
A Force   +62 more
core   +5 more sources

Aging concrete structures: a review of mechanics and concepts

open access: yesDie Bodenkultur, 2018
The safe and cost-efficient management of our built infrastructure is a challenging task considering the expected service life of at least 50 years. In spite of time-dependent changes in material properties, deterioration processes and changing demand by
Wan-Wendner Roman
doaj   +1 more source

Accuracy Assessment of Small Unmanned Aerial Vehicle for Traffic Accident Photogrammetry in the Extreme Operating Conditions of Kuwait

open access: yesInformation, 2020
This study presents the first accuracy assessment of a low cost small unmanned aerial vehicle (sUAV) in reconstructing three dimensional (3D) models of traffic accidents at extreme operating environments.
Abdullah M. Almeshal   +2 more
doaj   +1 more source

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