CORDOVÉS GARCÍA, ALEXIS

Preferred name

Main Affiliation

Facultad de Ciencias de la Ingeniería e Industrias

GICSI - Grupo de Investigación y Consultoría de Sistemas de Ingeniería

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Google Scholar

ORCID

0000-0002-4431-1340

Scopus Author ID

56067067800

Now showing 1 - 10 of 11

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Automation of Filter Press Drive Control for Enhanced Palm Oil Extraction
(International Information and Engineering Technology Association, 2025-01-31)
CORDOVES GARCIA, ALEXIS
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Agustín Moreira Orellana
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Alexis Cordovés Rodríguez
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Ricardo Avila Rondon
;
Leandro L. Lorente-Leyva
The study focuses on the automation of the drive system of a filter press in palm oil extraction plants, with the aim of optimizing operational efficiency, reducing manual intervention and improving process accuracy. The proposal replaces the manual drive with a motorized system controlled by a Programmable Logic Controller (PLC). A Siemens motor-reducer, model Z79-LE112MC4P-G040M-PN, was used, which guarantees a torque of 777.75 Nm and an output speed of 40 rpm, sufficient to efficiently tighten and release the filter press. The system control was implemented by a Siemens LOGO 230RC PLC, complemented by an AM2 analog expansion module to interpret strain gauge signals. These signals determine the exact moment to stop the motor-reducer once the programmed tightening force is reached. Programming was done in Ladder language using LOGOCONFORT software. The integration of these components improves system consistency and reliability, standardising processing times and reducing physical effort. The results highlight an increase in productivity and operational safety, aligning with modernisation trends in the palm oil industry. This advance represents a significant step towards greater sustainability and competitiveness of the sector.
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Datasets describing optimization of the cutting regime in the turning of AISI 316L steel for biomedical purposes based on the NSGA-II and NSGA-III multi-criteria algorithms
(Elsevier BV, 2023-10)
Hiovanis Castillo Pantoja
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CORDOVES GARCIA, ALEXIS
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Roberto Pérez Rodríguez
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Ricardo del Risco Alfonso
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José Antonio Yarza Acuña
There are several methods of analysis used in the metalworking industry for dry machining processes and with Minimum Quantity Lubrication (MQL). Evolutionary methods [1] have been used in the decision-making process in the machining process to select the optimal data and to analyze the behavior of variables such as cutting speed (V), feed rate (f) and cutting depth (ap). This work addresses the use of evolutionary algorithms of low dominance class II and III (NSGA-II and NSGA-III) to analyze from the multicriteria approach the initial wear of the cutting tool (VB), the energy consumption (E) and the machining time (t) in the turning process of the AISI 316L steel workpiece for biomedical purposes. As input variables to the algorithm with 54 records, there are: cutting speed (V: 200, 300, 400 m/min) and feed rate (f: 0.1, 0.15, 0.2 mm/rev). The experiment was developed for a dry (1) turning operation and with the use of MQL (-1). For the MQL lubrication regime, a TRI-COOL MD-1 lubricant was employed, a vegetable type used in ferrous and non-ferrous metal cutting operations. A BIDEMICS JX1 ceramic cutting tool was used.
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Static Analysis and Design of a Flight Control with Oleopneumatic Centering for a Sidestick CPT/FO in A320 Simulators
(International Information and Engineering Technology Association, 2025-03-31)
CORDOVES GARCIA, ALEXIS
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José Luís Palacios Luna
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Raúl Vicente Paredes Loor
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Alexis Cordovés Rodríguez
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Leandro L. Lorente Leyva
This study presents the design and validation of a Sidestick Captain/First Officer (CPT/FO) prototype with an oleo-pneumatic centering system as an enhancement for the FSTD A320 flight simulator, originally equipped with a conventional mechanical spring system. The objective was to improve the fidelity and response precision of the control system to provide a more realistic and efficient flight simulation experience. The methodology involved mechanical and structural design using SolidWorks, material selection (A36 Steel for the structure and 304 Stainless Steel for the control lever), and validation through static and numerical analyses to ensure structural integrity and system performance. The static analysis confirmed that the components operate within safe limits, and the integration of the oleo-pneumatic system provided a more stable and controlled damping response, closely replicating the behavior of the Airbus A320 Sidestick. Compared to traditional mechanical spring, electromechanical shock absorbers and hydraulic damper systems, the proposed design offers a smoother and more precise response while maintaining simplicity, low maintenance, and costefficiency. This innovation not only enhances the performance of the FSTD A320 simulator but also represents a scalable solution for other flight simulation models, contributing to more effective pilot training and opening opportunities for future improvements through advanced dynamic analysis.
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Conceptual model of a logical system processor of selection to electrical filters for correction of harmonics in low voltage lines
(Author(s), 2017)
Arlys Lastre
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Ives Torriente
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Erik F. Méndez
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CORDOVES GARCIA, ALEXIS
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Procedimiento para la fabricación de elementos de máquinas mediante tecnología de grupo en la pequeña y mediana empresa
(SciELO Agencia Nacional de Investigacion y Desarrollo (ANID), 2017-06)
CORDOVES GARCIA, ALEXIS
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Jaime José Sanzano Tamayo
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Arlys Michel Lastre Aleaga
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Ricardo Ávila Rondón
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Intelligent Adaptation of Axisymmetric Solid Parts in Machining Process Planning by Case Based Reasoning
(The Intelligent Networks and Systems Society, 2017-06-30)
CORDOVES GARCIA, ALEXIS
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Ricardo Lancho
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Arlys Aleaga
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Alexis Rodríguez
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Leonardo Leyva
The goal of this paper is the adaptation of plans of manufacturing processes of Axisymmetric Solid Parts under the approach of Case Based Reasoning (CBR). To this end, a data model for feature-based representation has been developed, which contains the geometric, dimensional and technological information required for the preparation of the one-piece process plan. As a result, an algorithm to generate new parts process plans from a similar plan retrieved from the case base is presented, which is based on the specific information of the Primitive Form Features (PFF) and considers the possible interaction between neighboring PFFs. The computer support of the developed algorithm was implemented in AutoLISP as programming language of the CAD system used and the interface was created in OpenDCL.
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Incorporating the Cultural and Decisions Factors in Multi-objective Optimization of Air Conditioning Conduit Design Process
(Springer International Publishing, 2017-06-23)
CORDOVES GARCIA, ALEXIS
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José Arzola-Ruiz
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Umer Asgher
Various engineering designs are multi-objective as they contain more than one design goal to be optimized. These design goals theoretically inflict differing requirements on the technical performance of system design. To analyze the trade-offs amongst conflicting design’s multi-objectives and to explore respective design options, an optimization problem with multi objectives has been mathematically modeled in this paper. In the present work, multi-objective optimization of air conditioning conduits and nets design is formulated. The design factors also consider the cultural as well as quantifiable, subjective ergonomics constraints and control decision-making factors. The cultural constraints, such as geographical, historical, sociological, and organizational constraints that determine the efficiency of the design of these nets are also incorporated in the objective function. This is reproduced during the option of filtration and selection from the solutions population generated at the locals and other levels, in which influences of cultural factor and of the decisions making factors are reflected in the subjective preferences.
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Pineapple Drying Analysis in Packing Plants Through Computational Fluid Dynamics
(International Information and Engineering Technology Association, 2022-02-28)
CORDOVES GARCIA, ALEXIS
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Alexis Cordovés Rodríguez
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Karla Tatiana Núñez Buñay
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Arlys M. Lastre Aleaga
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Leandro L. Lorente-Leyva
The aim of this research is to determine the average fluid velocity values and the average total pressure at the outlet of the ventilation system conduit for the drying, by air impulsion, of pineapples in packing plants, in order to ensure the required humidity level of the crown for its proper packaging. The CAD model of the air conduction was obtained in Solidworks and Computational Fluid Dynamics (CFD) techniques were applied to simulate the performance of the ventilation system. Air was indicated as the type of fluid, and an internal analysis of the pipe with roughness Rz = 3.2 μm. As a computational domain, the pipeline was established, from the connection to the fan to the outlet diffuser. As boundary conditions were established; a W and Z Manufacturing regenerative fan at the inlet of the flow pipe 618,439 m3/h, and at the outlet of the pipe the value of atmospheric pressure. As a result of the simulation, an average velocity value at the diffuser outlet of 127.294 m/s was obtained, higher than the required 96.06 m/s. An average total pressure value of 111718.73 Pa was obtained in the conduit suitable for the proposed purposes. For the conveyor belt, it is recommended to use, in each row of pineapples, the simulated fan with a simple diffuser with a rectangular section of 1 x 20 cm, or a regenerative fan with a flow of 1248.77 m3/h and a diffuser with two-outlet bifurcation.</jats:p>
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Using Adaptive Integration of Variables Algorithm for Analysis and Optimization of 2D Irregular Nesting Problem
(Springer International Publishing, 2019-06-12)
José Arzola-Ruiz
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Arlys Michel Lastre Aleaga
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CORDOVES GARCIA, ALEXIS
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Umer Asgher
En este artículo se propone una nueva técnica evolutiva que utiliza un algoritmo de optimización para problemas de anidamiento de formas irregulares en 2D, aplicado a procesos de corte de materiales como el corte de láminas irregulares y formas geométricas complejas. Esta técnica es adaptativa y mejora los resultados del proceso de corte y su optimización en comparación con otros métodos descritos en la literatura previa. La formalización y el modelado matemático se basan en la metodología de integración CAD/CAPP/CAM/CAP para piezas bidimensionales irregulares producidas mediante una optimización multinivel con restricciones de componente y la distribución binivel del proceso de corte en láminas. La decisión de selección y las soluciones finales utilizan un algoritmo adaptativo basado en la modificación dinámica de los objetivos durante la distribución de las piezas y utilizando la población obtenida para la elaboración de las trayectorias de corte del dispositivo de corte. Este procedimiento define un nuevo enfoque para la optimización binivel de configuraciones geométricas iterativas de piezas poligonales crecientes, utilizando el caso particular del método de Integración de Variables, denominado algoritmo de Exploración de una Función de Códigos Variables. Como resultado final, se deduce un nuevo esquema de integración de fabricación óptima que incluye la interacción hombre-máquina como componente.
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Control of Pollutant Emissions from a Boiler Through the Percentage of Oxygen
(International Information and Engineering Technology Association, 2021-06-25)
CORDOVES GARCIA, ALEXIS
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Carlos A. Pérez Alban
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Jorge R. Terán Benalcázar
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Alexis Cordovés Rodríguez
;
Leandro L. Lorente-Leyva
<jats:p>The goal of this paper is to obtain an automated system for the control of the quality of the combustion gases of a boiler. The concentration of oxygen present in the combustion gases is detected by means of a lambda sensor, and a proportional PID controller automatically regulates, through an actuator, the air inlet to the boiler, thus ensuring the emission of CO2 and other polluting gases into the atmosphere within the parameters established by the current environmental regulations. The control system has an HMI display and a modular PLC. The results achieved also ensure the reduction of fuel consumption of the boiler.</jats:p>

CORDOVÉS GARCÍA, ALEXIS

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