Listar Departament: Enginyeria de Sistemes Industrials i Disseny por autoría "26fd6ff5-9dde-470c-b2ba-a18a516c3593"
Mostrando ítems 1-20 de 35
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A new approach to averaging level control
Sanchis LLopis, Roberto; Romero Pérez, Julio Ariel; Martín Algarra, José María Elsevier (2011-09)In this paper, a new simple algorithm for averaging level control is presented. The proposed algorithm is based on the use of a static nonlinear controller to improve the input flow filtering by reducing the slope of the ... -
A new method for tuning PI controllers with symmetric send-on-delta sampling strategy
Romero Pérez, Julio Ariel; Sanchis LLopis, Roberto Elsevier (2016)In this paper we present a new method for tuning PI controllers with symmetric send-on-delta (SSOD) sampling strategy. First we analyze the conditions that produce oscillations in event based systems considering SSOD ... -
A new methodology for facilitating the design of safety-related parts of control systems in machines according to ISO 13849:2006 standard
Porras Vázquez, Alberto; Romero Pérez, Julio Ariel Elsevier (2018)Safety is a fundamental requirement of production systems considered throughout all the stages of a machine’s lifecycle. Due to its importance to avoid accidents and injuries, safety specifications have been explicitly ... -
A simplified black-box model oriented to chilled water temperature control in a variable speed vapour compression system
Romero Pérez, Julio Ariel; Navarro-Esbrí, Joaquín; Belman, Juan Elsevier (2011-02)The aim of this work is to propose a black-box model to accurately predict the chilled water temperature dynamic response of a vapour compression chiller. The model is oriented to be of value in determining an adequate ... -
Asymmetric delayed relay feedback identification based on the n-shifting approach
Sánchez-Moreno, José; Dormido, Sebastian; Miguel-Escrig, Oscar; Romero Pérez, Julio Ariel Taylor and Francis (2021-08-20)The paper presents an improvement of the n-shifting technique to identify the frequency response of an industrial process using a fully asymmetric and delaying relay. The n-shifting approach allows the calculation of n + 1 ... -
Auto-tuning method for PI controllers under Symmetric-Send-on-Delta sampling strategy
Romero Pérez, Julio Ariel; Miguel-Escrig, Oscar Elsevier (2024-06-27)In this work, an auto-tuning method for PI controllers applied in a loop under a Symmetric-Send-On-Delta sampling strategy is proposed. Auto-tuning algorithms usually implement an identification phase to obtain some ... -
Automatización industrial
Sanchis LLopis, Roberto; Romero Pérez, Julio Ariel; Vicent Ariño, Carlos Universitat Jaume I (2010) -
Benchmark para la Evaluación de Algoritmos de Auto-ajuste de Controladores PID
Romero Pérez, Julio Ariel; Sanchis LLopis, Roberto Comité Español de Automática (2011)En este artículo se propone una metodología para la evaluación de algoritmos de auto-ajuste de controladores PID. Para ello se definen índices cuantitativos que permiten medir el comportamiento de los algoritmos, tanto ... -
Characterization of Limit Cycle Oscillations Induced by Fixed Threshold Samplers
Miguel-Escrig, Oscar; Romero Pérez, Julio Ariel; Sánchez-Moreno, José; Dormido, Sebastian IEEE (2022-06-13)In this work, a generalized study of the conditions for the appearance of limit cycle oscillations induced by any kind of sampler with multilevel fixed thresholds is presented. These kinds of samplers, which will be referred ... -
Co-design of H∞ jump observers for event-based measurements over networks
Peñarrocha-Alós, Ignacio; Dolz Algaba, Daniel; Romero Pérez, Julio Ariel; Sanchis LLopis, Roberto Taylor & Francis (2015-07-27)This work presents a strategy to minimise the network usage and the energy consumption of wireless battery-powered sensors in the observer problem over networks. The sensor nodes implement a periodic send-on-delta approach, ... -
Design and implementation of a function block-based holonic control architecture for a new generation flexible manufacturing system
Querol, Esteban; Romero Subirón, Fernando; Estruch Ivars, Antonio; Serrano Mira, Julio; Romero Pérez, Julio Ariel Inderscience Enterprises (2017-05)In this research work a control architecture which gives response to the requirements of new generation of flexible manufacturing systems in terms of flexibility, reconfigurability, robustness and autonomy is designed ... -
Design of modular and distributable automation software for PLCs
Miguel-Escrig, Oscar; Roselló-González, Isabel; Romero Pérez, Julio Ariel SCITEPRESS – Science and Technology Publications (2023-11)Design and maintainability of modular automation software are common concerns nowadays. Common practice in industry usually overlooks the design phase of software, jumping directly into the coding phase, which typically ... -
Distributed implementation of Grafcets through IEC 61499
Miguel-Escrig, Oscar; Romero Pérez, Julio Ariel; Wiesmayr, Bianca; Zoitl, Alois IEEE (2020)A Grafcet is a standardized model for describing the behavior of systems which is popular among automation engineers. As the Grafcet standard excludes implementation details, the models are typically translated to ... -
Estudio comparativo de algoritmos de auto-ajuste de controladores PID. Resultados del Benchmark 2010-2011 del Grupo de Ingeniería de Control de CEA
Romero Pérez, Julio Ariel; Balaguer, Pedro; Arrieta Orozco, Orlando; Reynoso Meza, G.; García-Nieto, Simeón Elservier (2012)En este art ́ıculo se comparan tres me ́todos de auto-ajuste de controladores PID que consideran diferentes tipos de experimentos para obtener informacio ́n de la dina ́mica del proceso y distintos me ́todos de ca ́lculo ... -
Event-based discrete PI controllers robustness analysis through sampled describing function technique
Miguel-Escrig, Oscar; Romero Pérez, Julio Ariel Taylor and Francis (2021-08-09)In this work, the robustness of discrete PI controllers when used with a Symmetric-Send-On-Delta (SSOD) sampling law is addressed. Hitherto, the continuous Describing Function has been employed as a suitable tool to evaluate ... -
Experimental tuning of PI controllers with symmetric send-on-delta sampling from the step response
Sanchis LLopis, Roberto; Miguel-Escrig, Oscar; Romero Pérez, Julio Ariel Taylor & Francis (2024-01-02)This paper proposes a technique for tuning PI controllers with symmetric send-on-delta (SSOD) sampling,using three measurements taken from the step response. The tuning procedure is based on a previouslypublished experimental ... -
Generación extrínseca de eventos para el control de sistemas continuos
Miguel-Escrig, Oscar; Romero Pérez, Julio Ariel Área de Ingeniería de Sistemas y Automática, Universidad de Extremadura (2018-08-05)En este artículo se propone el diseño de un circuito electrónico para la generación de eventos por cruce de niveles de una señal analógica. Este tipo de circuito puede ser útil en la implementación de controladores basados ... -
Implementation and evaluation of event-based PID in the IEC-61499 standard
Miguel-Escrig, Oscar; Romero Pérez, Julio Ariel IEEE (2018-08-04)This paper presents a study about the performance of event-based PID controllers implemented in the standard IEC-61499. The implementation details are addressed and experimental results are given. The main goal is to ... -
Improved efficiency in sensitivity calculations for bioreactor models
Romero Pérez, Julio Ariel; Navarro, José Luis Elsevier (2009)Sensitivity functions are a basic tool in the parametric identification of models. They can be used to obtain the gradient needed by optimization algorithms in the estimation of parameters and to calculate the Fisher ... -
Improving the identification from relay feedback experiments
Miguel-Escrig, Oscar; Romero Pérez, Julio Ariel Elsevier (2022-01)This paper proposes a new method for systems identification from relay feedback test. As a difference with most of the existing methods, which are based on the describing function technique, our proposal considers a more ...