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Palomares Ruiz J.E.,Technological Institute of Nogales | Rodriguez Madrigal M.,Polytechnic University José Antonio Echeverría | Castro Lugo J.G.,Technological Institute of Nogales | Ramirez Trevino A.,Technological Institute of Nogales | Rodriguez Soto A.A.,Polytechnic University José Antonio Echeverría
Revista Mexicana de Ingenieria Biomedica | Year: 2015

The modeling and simulation of the biomechanical effects present in the aorta, give the health specialist a computational tool that can be used in the prevention and treatment of cardiovascular diseases. For that reason on this research a mathematical model was developed in order to implement digital dimensional simulations to analyze the mechanical behavior of arteries. First, its described the methodology used in the construction of the geometry of the artery based on images from a CT scan, next the necessary experimental tests to obtain mechanical parameters required by the model and finally his fractional order. Obtaining a finite element simulation where the areas of greatest stress concentration and the displacement field are identified. To obtain these results a novel formulation based on fractional order viscoelastic models was used and the values required for simulation were obtained through the complex modulus.


Javalera V.,Technological Institute of Nogales | Morcego B.,Advanced Control Systems Group SAC | Puig V.,Advanced Control Systems Group SAC
IFAC Proceedings Volumes (IFAC-PapersOnline) | Year: 2010

In the present work, distributed control and artificial intelligence are combined in a control architecture for Large Scale Systems (LSS). The aim of this architecture is to provide a general structure and methodology to perform optimal control in networked distributed environments where multiple dependencies between sub-systems are found. Often these dependencies or connections represent control variables so the distributed control has to be consistent for both subsystems and the optimal value of these variables has to accomplish a common goal. The aim of the research described in this paper is to exploit the attractive features of MPC (meaningful objective functions and constraints) in a distributed implementation combining learning techniques to perform the negotiation of these variables in a cooperative Multi Agent environment and over a Multi Agent platform to provide speed, scalability, and computational effort reduction. This approach is based on negotiation, cooperation and learning. Results of the application of this architecture to a small drinking water network show that the resulting trajectories of the levels in tanks (control variables) can be acceptable compared to the centralized solution. The application to a real network (the Barcelona case) is currently under development.


Palomares-Ruiz J.E.,Technological Institute of Nogales | Rodriguez-Madrigal M.,Polytechnic University José Antonio Echeverría | Castro Lugo J.G.,Technological Institute of Nogales | Rodriguez-Soto A.A.,Polytechnic University José Antonio Echeverría
Revista Mexicana de Fisica | Year: 2015

The aim of this work consist to compare the traditional viscoelastic material models vs the fractional ones, determinate the fractional order of the differential operator that characterize the mechanical stress-strain relation, the stress relaxation and the creep compliance of this models for a biological soft tissue, in particular a femoral artery. Apply the Laplace transform for Mittag-Leffler function type and the convolution on fractional standard lineal solid differential equation, known as Zener model, to obtain analytical solution. Simulated the force-pressure related by singular blood flow pulse and the displacement response.


Rascon R.,Autonomous University of Baja California | Penaloza-Mejia O.,Sonora Institute of Technology | Castro J.G.,Technological Institute of Nogales
European Journal of Control | Year: 2016

In this paper is proposed a control algorithm based on the first order sliding mode technique. The control design adds an exponential reaching law and a disturbance estimator to improve performance, achieving a reduction of the convergence time to the reference, as well as a reduction of the reaching time towards the sliding surface. Also, by compensating the estimated disturbance, it is possible to reduce the amplitude of the chattering in the control signal. As the control design is intended to be applied in mechanical systems, a velocity observer design is also proposed. Bringing together the above aspects, the proposed controller renders an improved performance over the classical first order sliding mode controller. The stability of the closed-loop system is proved using quadratic functions. The performance of the proposed control structure is illustrated and compared with other controllers via numerical simulations and real-time experiments in a mechanical system. © 2016 European Control Association.


Palomares J.E.,Technological Institute of Nogales | Rodriguez M.,Polytechnic University José Antonio Echeverría | Castro J.G.,Technological Institute of Nogales
Revista Internacional de Metodos Numericos para Calculo y Diseno en Ingenieria | Year: 2015

The main purpose of this publication is the proper determination of the fractional order at the Zener viscoelastic model's and the analysis of the implications derived from the accuracy in obtaining this. The procedure is performed using the numerical method of Levenberg-Marquardt from values reported in the literature. The parameters used are obtained from an artery segment using a stress relaxation test. After determining the fractional order is proceeded to find the model solution using, the function of Mittag-Leffler with two parameters and the convolution operation in order to compare the behavior of the fractional model vs the integer order and identify their key differences. The displacements present on the artery are obtained, under the stimulus of a normal blood pulse and two dissimilar, simulating the effect in blood flow caused by an arrhythmia and by mechanical ventilation process. Finally the dynamic response from the pulses is analyzed using the convolution operation and Gauss Kronrod numeric method, where the solution's accuracy obtained by the fractional model is observed, an compared with the integer order model. © 2015 The Authors.


Munoz F.,Technological Institute of Nogales | Munoz F.,CINVESTAV | Sanchez E.N.,CINVESTAV | Deng S.,Hong Kong Polytechnic University
Proceedings of the American Control Conference | Year: 2015

This paper presents a discrete-time inverse optimal control scheme for trajectory tracking of a direct expansion (DX) air conditioning (A/C) system. A recurrent high order neural network (RHONN) is used to identify the plant model, and based on this model, a discrete-time inverse optimal control law is derived. The neural network learning is performed on-line by Kalman filtering. The proposed scheme has a structure in which the trajectories can be defined hierarchical by a building energy management system. This novel scheme is tested via simulation. The obtained results for trajectory tracking illustrate the effectiveness of the proposed approach. © 2015 American Automatic Control Council.


Ochoa M. P.,Technological Institute of Nogales | Diaz D. M.D.L.,Technological Institute of Nogales | Juarez Q. L.,Technological Institute of Nogales | Hernandez R. S.I.,Technological Institute of Nogales
Proceedings - 2011 IEEE Electronics, Robotics and Automotive Mechanics Conference, CERMA 2011 | Year: 2011

This paper proposes an alternative sine wave oscillator using as a point of departure a mathematical function based on the characteristics of sinusoids. This solution has some advantages on phase-shift oscillator of three and two RC sections. Preliminary experimental results showed us that the problem of warm-up on low-frequency oscillator should be fixed. © 2011 IEEE.


Darwish M.,Technological Institute of Nogales | Castro O.G.A.,Technological Institute of Nogales | Valenzuela R.,Technological Institute of Nogales | Ortega A.,Technological Institute of Nogales | Jimenez G.,Technological Institute of Nogales
Proceedings of the Universities Power Engineering Conference | Year: 2013

The present work shows the implementation of an economic system in order to measure the solar radiation with the intention of quantify the amount solar energy received in this particular area. In order to accomplish that objective it was developed a data acquisition system based on a pyranometer, data acquisition board and a computer to record and display the data. Measurements obtained allowed the comparative analysis of this economic system versus the Meteorological Station currently used by the Instituto Tecnologico de Nogales. © 2013 IEEE.


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