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Guillermo J. Rubio‐Astorga

Instituto Tecnológico de Culiacán

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Juan Diego Sánchez‐Torres

Instituto Tecnológico y de Estudios Superiores de Occidente

Alexander G. Loukianov

Center for Research and Advanced Studies of the National Polytechnic Institute

J.M. Cañedo

Vodafone (Portugal)

David E. Castro-Palazuelos

Instituto Tecnológico de Culiacán

Julio C. Picos‐Ponce

Tecnológico Nacional de México

Martin A. Alarcón-Carbajal

Instituto Tecnológico de Culiacán

Modesto Medina-Melendrez

Instituto Tecnológico de Culiacán

Jesús J. Rochín-Medina

Instituto Tecnológico de Culiacán

Markus Kühne

Heidelberg University

Luis E. Barreto-Salazar

Instituto Tecnológico de Culiacán

Cooperative Institutions

Instituto Tecnológico de Culiacán

Tecnológico Nacional de México

Center for Research and Advanced Studies of the National Polytechnic Institute

Universidad de Guadalajara

Instituto Politécnico Nacional

Autonomous University of Sinaloa

Polytechnic University of Puerto Rico

Prototypes (United States)

BioMimetic Systems (United States)

Centre National de la Recherche Scientifique

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Self-adjustment of spectral components to object wave field extraction in off-axis digital holography

Applied Optics (2022)

Nicómedes Leal-León Modesto Medina-Melendrez J. M. Flores‐Moreno Guillermo J. Rubio‐Astorga J. C. C. Noris

In this paper, we introduce a positioning system to self-adjust the spectral components of holograms recorded by an off-axis digital holography setup. The incidence angle of the reference arm is carried out by two motorized actuators controlled by an algorithm that automatically adjusts it to avoid the overlapping of the spectral components. The right positioning of the spectral components allows selection of a spectral region to extract only the virtual component so that, after an inverse Fourier transformation, the object wave field can be obtained, thus eliminating the undesired components and increasing the image quality of the reconstructed image.

Digital holography

10.1364/ao.452737

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Citations (1)

Control of Vapor Pressure Deficit (VPD) on Black Sesame Seed (Sesamum indicum L.) Sprout Production in a Micro-Greenhouse Using Intelligent Control

Applied Sciences (2021)

Luis E. Barreto-Salazar Jesús J. Rochín-Medina Julio C. Picos‐Ponce David E. Castro-Palazuelos Guillermo J. Rubio‐Astorga

The demand for fresh and healthy food has been increasing, and different options for growing sprouts have been presented to solve this, such as traditional techniques and cultivation under controlled conditions. However, sprout farming has not explored all the tools available to produce these foods under controlled conditions. This study presents an alternative to produce sesame seed sprouts in a micro-greenhouse applying intelligent control algorithms for vapor pressure deficit. There was an improvement of 56% in the germination percentage, 2.59 in the germination index, 9.7% in the production of proteins, 1.1% in ash and an increase of 77.03 mm in the sprouts’ length collected in the micro-greenhouse in comparison with the traditional technique. This was achieved by maintaining a mean error for soil moisture at 87% and 0.93 kPa for vapor pressure deficit by applying proportional–integral–derivative, fuzzy logic and neural network control algorithms in the micro-greenhouse. The study shows that the nutritional content, the measured germination parameters and the size are improved in sesame sprout production by applying intelligent control algorithms for vapor pressure deficit in a micro-greenhouse.

10.3390/app11177957

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Citations (5)

High-Order Sliding Mode Block Control of Single-Phase Induction Motor

IEEE Transactions on Control Systems Technology (2014)

Guillermo J. Rubio‐Astorga Juan Diego Sánchez‐Torres J.M. Cañedo Alexander G. Loukianov

A new sliding mode (SM) observer-based controller for single-phase induction motor is designed. The proposed control scheme is formulated using block control feedback linearization technique and high-order SM algorithms with measurements of the rotor speed and stator currents. The stability of the complete closed-loop system, including the rotor flux second-order SM observer, is analyzed in the presence of model uncertainty, namely, rotor resistance variation and bounded time-varying load torque.

Observer (physics)

Feedback linearization

Linearization

Wound rotor motor

Machine control

10.1109/tcst.2013.2289307

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Citations (29)

Evaluation of Serrano Pepper Crops Growth under Controlled Conditions of Vapor Pressure Deficit in a Pilot-Scale Hydroponic Greenhouse

Processes (2023)

Luis E. Barreto-Salazar Jesús J. Rochín-Medina Guillermo J. Rubio‐Astorga David U. Santos-Ballardo Julio C. Picos‐Ponce

Controlled Environment Agriculture (CEA) has become an important field of study in recent years. The objective of this research is to evaluate the growth rate of the serrano pepper crop under controlled conditions of vapor pressure deficit in a pilot-scale hydroponic greenhouse. The controlled conditions were generated with the development of a control system composed of a non-mixed crossflow heat exchanger for internal temperature and a humidification system for internal humidity control. The comparison of variables and the growth rate of the crop was carried out in a controlled and a timed greenhouse. The best growth rate for serrano pepper cultivation was obtained under the following conditions: between 4.14 and 5.42 kPa with 0.251 and 0.225 cm/day in the controlled greenhouse. The results show that it is possible to obtain higher crop growth rates by controlling the vapor pressure deficit in a pilot-scale hydroponic greenhouse, using a heat exchanger for temperature control and a humidification control system. Controlling vapor pressure deficit can be a useful tool for agriculture in CEA.

10.3390/pr11123408

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Citations (2)

High order integral nested sliding mode control

Juan Diego Sánchez‐Torres Antonio Navarrete‐Guzmán Guillermo J. Rubio‐Astorga Alexander G. Loukianov

This paper exposes a controller for the nonlinear systems in the block controllable form. This proposal guarantees exponential exact tracking in the presence of unknown matched and unmatched disturbances by means a combination of the block control method and integral terms designed with high-order sliding-modes algorithms. Both, matched and unmatched, disturbances are compensated by those integral continuous terms and the tracking is achieved with the design of a nominal control law.

Integral sliding mode

Tracking (education)

10.1109/vss.2014.6881094

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Citations (8)

Integral high order sliding mode control of single-phase induction motor

2021 18th International Conference on Electrical Engineering, Computing Science and Automatic Control (CCE) (2013)

Guillermo J. Rubio‐Astorga Juan Diego Sánchez‐Torres J.M. Cañedo Alexander G. Loukianov

An observer-based controller for the single-phase induction motor is proposed in this paper. The scheme presented is formulated using block control feedback linearization technique and high order sliding mode algorithms with measurements of the rotor speed and stator currents. A second order sliding mode observer is included into the controller design in order to obtain estimates of the rotor flux. The stability of the complete closed-loop system is analyzed in the presence of model uncertainty, namely, rotor resistance variation and bounded time-varying load torque.

Observer (physics)

Feedback linearization

Linearization

Wound rotor motor

10.1109/iceee.2013.6676018

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Citations (2)

Low-Cost Platform Implementation of Discrete Controllers for DC-DC Boost Converter

Energies (2024)

Jesús A. González-Castro Guillermo J. Rubio‐Astorga Martin A. Alarcón-Carbajal Juan Diego Sánchez‐Torres Modesto Medina-Melendrez

In recent years, various solutions have been developed to control power electronic converters using devices available on the market that are powerful and easy to use. These solutions, in most cases, offer high performance. However, these have high implementation costs because the required devices are expensive. For this reason, this document presents the implementation of two discrete-time controllers widely used in the literature for a boost converter implemented on a low-cost platform. The objective is to obtain a constant voltage at the converter’s output for photovoltaic system applications. The proportional-integral control is implemented as the first case, and the second case is a sliding mode control. In addition, a prior analysis is presented through simulation. Both control algorithms are implemented on the TMS320F28379D microcontroller from Texas Instruments through the same manufacturer’s integrated development software based on an optimized C/C++ language compiler. The results of the non-linear algorithm reveal better performance in reducing the time response, the overshoot of the transient state, and the steady-state error. Finally, the significant economic savings associated with the implementation costs of the controllers tested on a low-cost platform differentiate this work from other similar ones.

Overshoot (microwave communication)

Transient (computer programming)

10.3390/en17164097

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Citations (0)

A Fixed Time Observer for Flux and Load in Induction Motors

Guillermo J. Rubio‐Astorga J.M. Cañedo Alexander G. Loukianov Juan Diego Sánchez‐Torres

This paper presents a second order sliding mode observer for flux and load in induction motors. It is based on a block-wise representation of the motor model in alpha beta frame and second order sliding mode algorithms. The block structure provides a straightforward form to the application of uniform second order sliding mode algorithms, yielding to finite-time convergence with a predetermined settling time independent on initial conditions. The cases of single-phase, three-phase and linear induction motors are studied. Finally, numerical simulations show the efficiency and feasibility of the proposal.

Settling time

Observer (physics)

Mode (computer interface)

Stationary Reference Frame

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Citations (3)

Second order sliding mode block control of single‐phase induction motors

International Journal of Robust and Nonlinear Control (2012)

Guillermo J. Rubio‐Astorga J.M. Cañedo Vadim Utkin Alexander G. Loukianov

SUMMARY The authors propose a robust nonlinear controller based on a block control linearization technique combined with a second order sliding mode super‐twisting algorithm for controlling the rotor speed of single‐phase induction motors. The block control approach is used to design a sliding manifold in terms of the stator current and its desired value. The super‐twisting sliding mode algorithm is applied then to render the designed manifold be attractive. A nonlinear observer is designed to estimate the unmeasured variables (rotor flux linkages and torque load). Copyright © 2012 John Wiley & Sons, Ltd.

Feedback linearization

Observer (physics)

Linearization

Manifold (fluid mechanics)

10.1002/rnc.2913

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Citations (10)

Evaluation and Design of Power Controller of Two-Axis Solar Tracking by PID and FL for a Photovoltaic Module

International Journal of Photoenergy (2020)

Joel J. Ontiveros Carlos D. Ávalos Faustino Loza Nestor Daniel Galan-Hernandez Guillermo J. Rubio‐Astorga

Solar trackers represent an essential tool to increase the energy production of photovoltaic modules compared to fixed systems. Unlike previous technologies where the aim is to keep the solar rays perpendicular to the surface of the module and obtain a constant output power, this paper proposes the design and evaluation of two controllers for a two-axis solar tracker, which maintains the power that is produced by photovoltaic modules at their nominal value. To achieve this, mathematical models of the dynamics of the sun, the solar energy obtained on the Earth’s surface, the two-axis tracking system in its electrical and mechanical parts, and the solar cell are developed and simulated. Two controllers are designed to be evaluated in the solar tracking system, one Proportional-Integral-Derivative and the other by Fuzzy Logic. The evaluation of the simulations shows a better performance of the controller by Fuzzy Logic; this is because it presents a shorter stabilization time, a transient of smaller amplitude, and a lower percentage of error in steady-state. The principle of operation of the solar tracking system is to promote the orientation conditions of the photovoltaic module to generate the maximum available power until reaching the nominal one. This is possible because it has a gyroscope on the surface of the module that determines its position with respect to the hour angle and altitude of the sun; a data acquisition card is developed to implement voltage and current sensors, which measure the output power it produces from the photovoltaic module throughout the day and under any weather conditions. The results of the implementation demonstrate that a Fuzzy Logic control for a two-axis solar tracker maintains the output power of the photovoltaic module at its nominal parameters during peak sun hours.

Solar tracker

Maximum power principle

Transient (computer programming)

Tracking system

10.1155/2020/8813732

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Citations (26)