Results 21 to 30 of about 211,581 (163)

Optimal Gain Selection for the Arbitrary‐Order Homogeneous Differentiator

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT Differentiation of noisy signals is a relevant and challenging task. Widespread approaches are the linear high‐gain observer acting as a differentiator and Levant's robust exact differentiator with a discontinuous right‐hand side. We consider the family of arbitrary‐order homogeneous differentiators, which includes these special cases.
Benjamin Calmbach, Jaime A. Moreno, Johann Reger   +2 more
wiley   +1 more source

Development of a state feedback controller for the synchronous buck converter [PDF]

, 2005
A digital control algorithm for a current-mode (CM) and a voltage-mode (VM) synchronous buck converter (SBC) is developed. In both cases, the design leads to a stable controller, even for a duty cycle larger than 50%.
Bortolotto, Gustavo, Chiacchiarini, Hector Gerardo, Oliva, Alejandro Raul   +2 more
core  

The First Archaeomagnetic Age at Tiwanaku and Implications for Dating Andean Metallurgical Furnaces

Archaeometry, Volume 68, Issue 3, Page 317-329, June 2026.
ABSTRACT This paper presents the first archaeomagnetic dating at Tiwanaku (Andean Altiplano). We compared the geomagnetic field values recorded by a metallurgical furnace against an updated SHAWQ2k‐SH global model and a regional intensity curve, both of which include, for the first time, high‐quality intensity data from the Southern Hemisphere. Results
Judit del Río, Pablo Cruz, Miriam Gómez‐Paccard, Alicia Palencia‐Ortas, Marina Puente‐Borque, F. Javier Pavón‐Carrasco, Erik Marsh   +6 more
wiley   +1 more source

A Verilog HDL digital architecture for delay calculation [PDF]

, 2007
A method for the calculation of the delay between two digital signals with central frequencies in the range [20, 300] Hz is presented. The method performs a delay calculation in order to determine the bearing angle of a sound source.
Chacón-Rodríguez, A., Julian, Pedro Marcelo, Mandolesi, Pablo Sergio, Martín-Pirchio, F. N.   +3 more
core  

A methodology for the efficient computer representation of dynamic power systems : application to wind parks [PDF]

, 2012
This contribution presents a methodology to efficiently obtain the numerical and computer solution of dynamic power systems with high penetration of wind turbines.
Abderrazzaq, Ackermann, Agarwal, Chowdhury, Dommel, Erlich, Fernández, Fernández, Grama, Gross, Huang, Krause, Manitoba, Mathews, Minwon, Ong, Petru, Shu, Slootweg, Watson   +19 more
core   +1 more source

Current Tracking Adaptive Control of Brushless DC Motors

International Journal of Adaptive Control and Signal Processing, Volume 40, Issue 4, Page 890-903, April 2026.
In this paper, the current tracking for Brushless Direct Current motors is approached considering uncertainty in the parameters of the motor's model. An adaptive control scheme to compensate electrical parameters uncertainty is proposed without requiring any knowledge of the mechanical parameters.
Fernanda Ramos‐García, Axel Coronado‐Andrade, Gerardo Espinosa‐Pérez, Luis Alvarez‐Icaza   +3 more
wiley   +1 more source

Semi-Huber quadratic function and comparative study of some MRFs for Bayesian image restoration [PDF]

Journal of the European Optical Society-Rapid Publications, 2013
The present work introduces an alternative method to deal with digital image restoration into a Bayesian framework, particularly, the use of a new half-quadratic function is proposed which performance is satisfactory compared with respect to some other ...
de la Rosa J. I., Villa-Hernández J., González-Ramírez E., de la Rosa M. E., Gutiérrez O., Olvera-Olvera C., Castañeda-Miranda R., Fleury G.   +7 more
doaj   +1 more source

A Model for Induction Motors with Non-Uniform Air-Gap [PDF]

, 2005
Equations to calculate inductances of induction motors, considering non-uniform air-gap, are proposed. The analyzed air-gap variations are static and dynamic eccentricity and stator slots.
Bossio, Guillermo Rubén, de Angelo, Cristian Hernan, Garcia, Guillermo, Solsona, Jorge Alberto, Valla, Maria Ines   +4 more
core  

Estimating Soil Electrical Parameters in the Canadian High Arctic From Impedance Measurements of the MIST Antenna Above the Surface

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract The MIST experiment aims to detect the cosmological 21‐cm signal through sky observations at 25–125 MHz using a wide‐beam antenna. The antenna is mounted above the soil and the beam characteristics are highly dependent on the soil's electrical properties.
I. Hendricksen, R. A. Monsalve, V. Bidula, C. Altamirano, R. Bustos, C. H. Bye, H. C. Chiang, X. Guo, F. McGee, F. P. Mena, L. Nasu‐Yu, C. Omelon, S. E. Restrepo, J. L. Sievers, L. Thomson, N. Thyagarajan   +15 more
wiley   +1 more source

Design and Validation of a Passive Solar Tracking Sensor Based on Gnomon Shadow Analysis

International Journal of Photoenergy, Volume 2026, Issue 1, 2026.
Solar tracking is essential for efficiency, yet current market solutions present a trade‐off: Active systems are precise but expensive and computationally demanding, while low‐cost passive systems (e.g., LDRs) often lack accuracy. To address this gap, this work presents the design and validation of a passive solar tracking sensor based on gnomon shadow
Job Ordaz-Castillo, Héctor D. García-Lara, Santos Méndez-Díaz, Oscar A. de la Garza, Simón Martínez-Martínez, Carlo Renno   +5 more
wiley   +1 more source