Browsing by Autor "Juan Cardillo"

Now showing 1 - 5 of 5

Control de Modelos Max Plus Lineales con Restricciones Temporales
(Technical University of Valencia, 2016) Clemente Cárdenas; Juan Cardillo; Jean Jacques Loiseau; Claude Martínez
This article deals with the control of discrete event systems subject to synchronization and delay phenomena, described by a plus max linear model. The temporal constraints are imposed on the state space of the system. These constraints are described in the max plus cone defined by the image of the Kleene star of the matrix associated with the temporal constraints. In consequence, the problem of determining a control that force the satisfaction of time constraints, is formulated in terms of the invariance of the cone. Sufficient conditions for the existence of a solution to this problem have been established. Our approach allows the design of a satisfactory control of the form of a static state feedback. We emphasize that our solution takes into account two aspects which are the initialization of the control law, and its causality, important for its implementation. To illustrate the application of this approach, two control problems are presented.
Janus Methodology: Integrated automation in industry 4.0, an approach for the digital transformation of enterprise
(2021) Juan Cardillo; Édgar Chacón; Rafael Rodríguez Chacón
The establishment-application of the Industry 4.0 approach (I4.0), both in new and established enterprises, requires on their part, an understanding of this approach, where technology is a consequence of applying the precepts and concepts of ths approach that gives an indication of what should be improved in the processes. In I4.0, the changes are given “Not on what is done but on how is done”, searching the customization of mass products through agile procedures and configurable processes and making successive improvements towards a green enterprise. In this work we show a methodology that allows, under the I4.0 approach, to make the respective mapping on the production process (enterprise), establishing the gap between the current state of the company and what is desired with I4.0, generating a diagnosis to establish an acceptable path of implementation.The design of the methodology is based on the integrated automation of production processes from the perspective of the Holonic Unit of production that contains the I4.0 approach
Online Production Scheduling and Re-Scheduling in Autonomous, Intelligent Distributed Environments
(2012) Edgar Chacn; Juan Cardillo; Rafael Chacn; Germn Daro
The search for the automation of continuous production systems that are widely distributed, such as: electricity, oil production, water and others, is a complex problemdue to the existence of multiple production units, transport and distribution systems, multiple points of delivery that must be coordinated, the presence of constant changes in the demand and restrictions in the production units. Automation includes constant changes in the production goals that must be captured by the system and every productionmust self-adjust to these new goals. The production re-scheduling is imperatively on line because it implies evaluating the conditions of every unit in order to know the available capacity and how feasible it is to establish physical connections amongst the different units. In order to achieve one production goal and follow the process on line, in the event of a change in demand or a failure in any unit, an adjustment in the different assignment could be reached and comply with the new conditions of the system. In order to determine the scheduling of every unit, it is important to know its available capacity, production costs and how they should work with each other in order to obtain a product. Once the scheduling is obtained, it must be monitored constantly in order to know its progress and detect when the goal cannot be reached, so a new scheduling is done. The organizational structure of the production process must allow to maintain a knowledge in every production unit, where the acquisition of information and its processing may be centralized and distributed, establishing different approaches to determine the scheduling.
Symbolic computing aided design of nonlinear PID controllers
(Springer Science+Business Media, 1996) Jesús Rodríguez-Millán; Juan Cardillo
The Holonic Production Unit: an Approach for an Architecture of Embedded Production Process
(2008) Edgar Chacn; Isabel Besembel; Mota Dulce; Juan Cardillo
In a natural manner the business model, the chain of value, the product flow and the holonic approach allow us to capture a coherent model of the production process in all of their globallity and complexity giving origin to the shown embedded model.