Results 31 to 40 of about 9,041 (189)

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

Homography-based pose estimation to guide a miniature helicopter during 3D-trajectory tracking [PDF]

, 2013
This work proposes a pose-based visual servoing control, through using planar homography, to estimate the position and orientation of a miniature helicopter relative to a known pattern.
Brandão, Alexandre, Carelli Albarracin, Ricardo Oscar, Sarapura, Jorge Antonio, Sarcinelli Filho, Mario   +3 more
core   +1 more source

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

Reducción de operaciones en una línea de producción. [PDF]

, 2013
Se presenta el uso de la simulación como una herramienta para reducir operaciones en una línea de producción. El modelo de simulación es presentado utilizando FlexSim.
Lizardi Macías, Servando, Zapata Rebolloso, Apolinar   +1 more
core  

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

Design and Implementation of a Low-Cost Embedded Sensing Platform for Relative Monitoring of Temperature and Humidity During Concrete Hydration

Eng
Standard maturity methods for concrete monitoring rely primarily on temperature history, often neglecting the influence of internal relative humidity (RH) on hydration kinetics and self-desiccation risks.
Arturo Molina-Almaraz, José A. Rodríguez-Rodríguez, Manuel de Jesús López-Martínez, José I. de la Rosa-Vargas, Carlos E. Olvera-Mayorga, Celina L. Castañeda-Miranda, Mario Molina-Almaraz, José Vidal González-Aviña, Carlos A. Olvera-Olvera   +8 more
doaj   +1 more source

Diseño de planeación estratégica de la empresa Servi-Clima Luna S.A. aplicando el cuadro de mando integral [PDF]

, 2013
Para toda empresa es importante su administración, su estructura organizacional, los recursos humanos, tecnológicos, financieros, materiales. En la cual he observando que existen en la empresa en el ramo de aire acondicionado, una necesidad latente de ...
Ocegueda Mercado, Corina Guillermina, Reyes Ibarra, Dulce Cristian, Villafañez, Alejandro   +2 more
core  

Structure-from-Motion Approach for Characterization of Bioerosion Patterns Using UAV Imagery [PDF]

, 2015
The aim of this work is to evaluate the applicability of the 3D model obtained through Structure-from-Motion (SFM) from unmanned aerial vehicle (UAV) imagery, in order to characterize bioerosion patterns (i.e., cavities for roosting and nesting) caused ...
Delrieux, Claudio Augusto, Genchi, Sibila Andrea, Perillo, Gerardo Miguel E., Vitale, Alejandro José   +3 more
core   +2 more sources

Graphene Oxide as an Auxiliary UV Photoprotector for Polypropylene

Polymer Composites, Volume 46, Issue 16, Page 14986-15000, 10 November 2025.
Auxiliary UV Protection. ABSTRACT This work presents the preparation and characterization of polypropylene (PP)/graphene oxide (GO) nanocomposites by adding photostabilizing additives to obtain materials with enhanced resistance to photodegradation. The synthesized GO (modified Hummers' method) was characterized using state‐of‐the‐art techniques.
Nathalia S. S. Amorim, Muhammad Nisar, Gabriel M. Pinto, Guilhermino J. M. Fechine   +3 more
wiley   +1 more source

Comparación de usabilidad entre captcha basado en texto y captcha basado en imágenes [PDF]

, 2013
En la actualidad los captchas basados en texto son pruebas utilizadas para diferenciar un humano de una computadora, sin embargo existen programas llamados OCR que engañan al captcha basado en texto, el avance de la tecnología de los OCR ha ido ...
González Lara, Aída Lucina, López Flores, Néstor Ulises, López Sánchez, Alicia Yesenia   +2 more
core