Detección de fallas en un intercambiador de calor, utilizando observadores por modos deslizantes de segundo orden

Fault detection in a heat exchanger using second order sliding mode observers

M. Adam-Medina¹, R. F. Escobar^1,2, D. Juárez-Romero²*, G. V. Guerrero-Ramírez² y B. López-Zapata³

¹ Centro Nacional de Investigación y Desarrollo Tecnológico, Int. Internado Palmira S/N, Palmira C.P.62490, Cuernavaca, Morelos, México.

³ Universidad Politécnica de Chiapas, Calle Eduardo J. Selvas s/n, Col. Magisterial CP. 29082, Tuxtla Gutiérrez, Chiapas, México.

Recibido 9 de enero de 2013
Aceptado 19 de Mayo de 2013

Resumen

En este trabajo se presentan los resultados obtenidos de la implementación de un esquema de detección y localización de fallas en sensores de temperatura utilizando observadores por modos deslizantes de segundo orden. La implementación del sistema de diagnóstico de fallas se llevó a cabo en un intercambiador de calor de tubos concéntricos con flujos a contra corriente. Así mismo, se desarrolló un sistema de monitoreo que muestra la operación del proceso termodinámico donde se aplica la detección y localización de fallas.

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

This paper presents the results of the implementation of a fault detection scheme in temperature sensors using second order sliding mode observers. The implementation of fault detection system was developed in a double pipe heat exchanger with counter-current flows. Also it was developed a monitoring system which shows the thermodynamic process operation, where detection and troubleshooting is applied.

Keywords: fault detection, second order sliding mode observes, heat exchanger.

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