Author
Nikolaos I. Xiros
Other affiliations: Virginia Tech, National Technical University of Athens
Bio: Nikolaos I. Xiros is an academic researcher from University of New Orleans. The author has contributed to research in topics: Nonlinear system & Turbine. The author has an hindex of 6, co-authored 39 publications receiving 306 citations. Previous affiliations of Nikolaos I. Xiros include Virginia Tech & National Technical University of Athens.
Papers
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TL;DR: In this article, a VIVACE Converter with virtual elements is used for modeling nonlinear viscous damping, static and dynamic friction, and is verified using monochromatic excitation in air and VIV tests in water using physical damper and springs.
108 citations
TL;DR: In this paper, an approach for numerically representing turbulence effects in the simulation of ocean current turbines (OCT)s is described, which is integrated into the numerical simulation of an OCT to evaluate effects of turbulence on performance.
29 citations
TL;DR: In this article, the authors investigated the possibility of using active individual blade pitch control for positioning moored ocean current turbines within an array and showed that harmonic blade oscillations with amplitudes of 1.5° can be used to displace an ocean current turbine laterally by a distance equal to one rotor diameter when the mooring cable length is approximately 30 times the diameter of the rotor blade.
24 citations
01 Jan 2016
TL;DR: Stability, controllability, and observability with an emphasis to linear, time-invariant systems are presented and PID control is introduced as both a pole placement problem as well as in the framework of conventional Ziegler–Nichols methods.
Abstract: In this chapter, a presentation of control theory and engineering as applied to ocean engineering is given. The chapter starts with the fundamentals of systems science and theory, i. e., descriptions of systems in state space and for linear, time-invariant ones in the frequency domain using the Laplace transform as well as with ordinary differential equations with respect to time. Then stability, controllability, and observability with an emphasis to linear, time-invariant systems are presented. Bode plots for sinusoidal steady-state analysis as well as the root locus technique for proportional gain feedback design are presented. For single-input, single-output systems, PID control is introduced as both a pole placement problem as well as in the framework of conventional Ziegler–Nichols methods. Pole placement design with the addition of Luenberger observers is presented for linear, time-invariant systems with any time of inputs and outputs. A brief presentation of digital controller implementations is given. Applications from ocean engineering include control of autonomous underwater vehicles and autopilots for surface vessels.
22 citations
Cited by
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01 Jan 2006
TL;DR: Probability distributions of linear models for regression and classification are given in this article, along with a discussion of combining models and combining models in the context of machine learning and classification.
Abstract: Probability Distributions.- Linear Models for Regression.- Linear Models for Classification.- Neural Networks.- Kernel Methods.- Sparse Kernel Machines.- Graphical Models.- Mixture Models and EM.- Approximate Inference.- Sampling Methods.- Continuous Latent Variables.- Sequential Data.- Combining Models.
10,141 citations
01 Jan 2016
TL;DR: The introduction to electrodynamics is universally compatible with any devices to read and is available in the book collection an online access to it is set as public so you can get it instantly.
Abstract: Thank you for downloading introduction to electrodynamics. Maybe you have knowledge that, people have look numerous times for their chosen books like this introduction to electrodynamics, but end up in infectious downloads. Rather than enjoying a good book with a cup of tea in the afternoon, instead they juggled with some malicious bugs inside their computer. introduction to electrodynamics is available in our book collection an online access to it is set as public so you can get it instantly. Our book servers spans in multiple countries, allowing you to get the most less latency time to download any of our books like this one. Merely said, the introduction to electrodynamics is universally compatible with any devices to read.
1,025 citations
01 Jan 2016
TL;DR: In this paper, the authors describe how to download and install guidance and control of ocean vehicles in the house, workplace, or perhaps in your method can be all best place within net connections.
Abstract: By searching the title, publisher, or authors of guide you in reality want, you can discover them rapidly. In the house, workplace, or perhaps in your method can be all best place within net connections. If you objective to download and install the guidance and control of ocean vehicles, it is utterly easy then, past currently we extend the colleague to buy and make bargains to download and install guidance and control of ocean vehicles therefore simple!
611 citations
451 citations
Book•
01 Jan 1985
TL;DR: Theoretical Description of Random Sea Waves Statistical Theory of Irregular Waves Techniques of Random Wave Analysis 2D Computation of Wave Transformation with Random Breaking and Nearshore Currents Statistical Analysis of Extreme Waves Prediction and Control of Beach Deformation Processes.
Abstract: Evolution of Design Method Against Random Waves Statistical Properties and Spectral of Sea Waves Transformation and Deformation of Random Sea Waves Design of Breakwaters Design of Coastal Dikes and Seawalls Probabilistic Design of Harbor Facilities Harbor Tranquility and Vessel Mooring Hydraulic Model Tests with Random Waves Theoretical Description of Random Sea Waves Statistical Theory of Irregular Waves Techniques of Random Wave Analysis 2D Computation of Wave Transformation with Random Breaking and Nearshore Currents Statistical Analysis of Extreme Waves Prediction and Control of Beach Deformation Processes.
436 citations