Simulación y control

 

Diagnóstico de fallas múltiples en los sensores de un intercambiador de calor empleando observadores por modos deslizantes basado en el algoritmo Super-Twisting

 

Multiple-Sensor fault diagnosis in a heat exchanger using Sliding-Mode observers based on Super-Twisting algorithm

 

J. García-Morales², M. Adam -Medina¹*, R.F. Escobar¹, C.M. Astorga-Zaragoza¹, C.D. Garcia-Beltran¹

 

¹ Centro Nacional de Investigación y Desarrollo Tecnológico, Int. Internado Palmira S/N, Palmira C.P.62490, Cuernavaca, Morelos, México. *Autor para la correspondencia. E-mail: adam@cenidet.edu.mx Tel. 362-7770, ext.: 2223.

² Posgrado en Ingeniería Electrónica del Centro Nacional de Investigación y Desarrollo Tecnológico, Int. Internado Palmira S/N, Palmira C.P.62490, Cuernavaca, Morelos, México.

 

Recibido 29 de enero de 2014
Aceptado 30 de mayo de 2015

 

Resumen

En este trabajo se presenta la implementación de un sistema de diagnóstico de fallas basado en modelo para un intercambiador de calor de doble tubo. El sistema de diagnóstico permite estimar y aislar las fallas en uno de los sensores de temperatura de entrada y en dos de salida del intercambiador de calor. El principal logro que se pretensa en este trabajo es la posibilidad de aislar dos fallas simultáneas en los sensores de temperatura en el intercambiador de calor. El sistema de diagnóstico de fallas se basa en observadores por modos deslizantes del tipo Super-Twisting. Los resultados experimentales demuestran el desempeño del esquema propuesto.

Palabras clave: observadores por modos deslizantes, diagnóstico de fallas, intercambiador de calor.

 

Abstract

This work presents a model-based fault diagnosis system for double pipe heat exchanger. The fault diagnosis system allows estimating and isolating the fault in one inlet and two outlet temperature sensors of the heat exchanger. The main goal presented in this work; is the possibility of isolating two simultaneous failures in the temperature sensors. The fault diagnosis system was designed based on Super-Twisting Sliding -Mode Observer. Experimental results have shown the effectiveness of the proposed diagnosis system.

Key words: sliding-mode observer, fault diagnosis, heat exchanger.

 

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