Épsilon

14

Authors: Carlos Agudelo, Francisco Morant Anglada, Eduardo Quiles Cucarella, Emilio García Moreno, Antonio Corredor Salvador

The present article shows the integration of techniques for the early fault detection and diagnosis in industrial processes, in order to make recommendations to the operations staff in an industrial process and avoid safety incidents. The early fault detection and diagnosis provides assistance to the operations team in an industrial plant in order to make the right decisions during the process. This prevents small faults from escalating to critical situations where risks such as loss of human lives, damages to the environment or economic loss may exist. The article presents a prototype in a fluidized catalytic cracking unit.

22

Authors: Diana Jimena López Mesa, Juan Martín Velasco, Óscar Amaury Rojas Alvarado

The enterprise integration model called enterprise actor is a recent concept developed in the Industrial Automatics I + D group of Universidad del Cauca. Research work has been developed regarding this concept, and its results have allowed specific definitions and characteristics of the model. Future investigation is centered on the definition of a methodology that allows applying this model to manufacturing companies in order to assess the advantages that so far have been theoretically defined. The formalization of the methodology has led to a comparison between the current status of the enterprise actor model and multi-agent systems. This comparison has provided the investigation group with a new overview of certain elements that need to be modified, added or removed from the current structure of the proposed integration model. The present article shows the basic principles of the enterprise integration model, its current status and future projects that will allow its continuous development.

24

Authors: Hugo Alexander González Bocanegra

The present article describes the development of a project oriented towards physics, optics and electronics, and the implementation of an instrument to measure distance and speed. Its operation is based on a lateral movement interferometer with a two-sign optical configuration based on power supply. The measurements performed with the instrument show that distances can be measured in a 100 millimeter range according to its calibration and the implementation of the beam expander. In addition, the reader is presented with an instrument oriented to the application of alternative technologies that are not tied to modern productive processes such as robotic applications, a progress that is necessary to achieve greater technification and a sustainable development that allows the improvement of production conditions.

28

Authors: Óscar Amaury Rojas Alvarado, Ángela Gómez, Luisa Tumbajoy, Juan Martín Velasco

In order to obtain an integrated automation of production processes different aspects must be taken into account, such as the process itself, the company’s organizational structure, resources and business management. To reach an integrated system that manages the abovementioned aspects it is necessary to have behavior models that make it possible to demonstrate the knowledge of the business process and its supervision. The present article shows the results of the dynamic modeling of the product traceability process with Petri networks for WorkFlow (WF-Net).

9

Authors: Sonia Camargo Urrea, Liliana Peralta Baquero, Julia Luna Amador, Magdalena Garnica Holguín

Production units (PU) for processing food have a high rate of non-compliance of the rules on food processing. For this reason, the Bogotá Mayor’s Office, through the District’s Department of Economic Development, entered into an agreement with La Salle University in which the impact of the training process in good manufacturing practices, hazard analysis and critical Control Points and ISO 22000 for 50 PU was evaluated. For this purpose, initial diagnosis visits were carried out, and an improvement plan for each PU was established and socialized. Later, a training process was executed and, finally, a second visit for tracking and verification was conducted. As a result of the process, the following improvements were obtained: 14.70% in physical facilities, 12.70% in reception controls; 13.50% in locative hygiene for the process area, 16.70% in process control, 19.20% in staff, and 8.70% in quality documentation, compared to the ideal percentage of compliance. This showed that the training process and the socialization of the improvement plan for each PU, led companies to continuous improvement, thus contributing significantly to compliance with current regulations.

14

Authors: Carlos Adrián Correa, Ricardo Bolaños, Alejandro Garcés

This paper presents a methodology for solving the hydrothermal dispatch problem when environmental impacts considered. The solution is obtained through a high order interior point model for optimization that considers power flow (DC Model) constraints, reservoir and generation limits, as well as emission reduction. The goal is to minimize both emissions and costs, which becomes a multiobjective problem considering that both objectives are in conflict. To face this fact, a weighted sum method is used in order to obtain a Pareto optimal set of solutions so they can be analyzed by a decision maker. A 6-bus test system with two hydroelectric plants and two thermal plants is used to show the obtained results

16

Authors: Diego Alexander Escobar García, Francisco Javier García Orozco

In the project Studies for the development of land use planning and technical studies for the road system in the South Central region of the Caldas Department, conducted by Universidad Nacional de Colombia (Manizales Campus), the integral design of road interventions established by the Departmental Administration was proposed. The characterization of traffic and accessibility, offered by current and future infrastructure, became one of the main resources for planning. In these studies, it is necessary to evaluate the physical and operational characteristics of the infrastructures, with the purpose of performing, through comparison of parallel scenarios, the modifications and extensions that the transportation system actually requires; in order to do so, the goal was to promote neglected and isolated areas. An analysis of the average global accessibility offered by the road network was conducted; this was calculated in a study area of 35 km radius from the urban area of the town of Palestina, in order to establish a compact area of direct influence over the South Central region, taking into account that the Aeropuerto del Café (Coffee Airport) will be located in that municipality

18

Authors: Víctor Leonardo López Jiménez

The geographical location of the La Salle University campuses and the physical characteristics that surround them are determinant factors to explain the climatic conditions that are present in the daily life of the Lasallian academic community located in Bogota. These campuses are located at the lower foothills of the Eastern Mountains (Cordillera Oriental), a mountain range that constitutes the border of the city and that, due to its height and orientation, acts as a modifying factor of the prevailing weather conditions in the area. Given these considerations, the goal was to explain the special behavior at the foothills of certain parameters throughout the year, such as rainfall, temperature, humidity, air, sunshine and wind. It was established that the campuses are located on the most humid and rainy sector of the city, where daylight hours are reduced over a long period of the year due to the continuous formation of orographic clouds and where cold drafts often come down from the mountain.