Controlador Tolerante a Fallas basado en MRAC para una aplicación real de un sistema SISO (MRAC-based Fault Tolerant Control of a SISO Real Process Application)

Luis Eduardo Garza Castañon (legarza@itesm.mx)1, Adriana Vargas Martinez (adriana.vargas.mtz@itesm.mx)1, Roberto Cruz Reynoso (roberto.cruz.reynoso@hotmail.com)1


1Tecnologico De Monterrey, Campus Monterrey

This paper appears in: Revista IEEE América Latina

Publication Date: Aug. 2015
Volume: 13,   Issue: 8 
ISSN: 1548-0992


Abstract:
In this paper, a modified version of Variable Structure Model Reference Adaptive Controller (VS-MRAC) scheme is developed for an application in Fault Tolerant Control (FTC) of a Single Input-Single Output (SISO) process. As a result of steady state error and oscillations when faults are induced in sensor and actuator of the process, the original VS-MRAC is modified by adding a Saturation Function and a PI controller (VS-MRAC-SAT-PI). The new scheme performance is compared against a classical PID and two other MRAC-based FTC schemes in a Coupled-Tank System. Different types of additive faults (abrupt and gradual faults) were induced in the process and results showed better fault accommodation capabilities of the VS-MRAC-SAT-PI.

Index Terms:
Fault Tolerant Control, MRAC, VS-MRAC, MIT rule, Lyapunov, Coupled-Tank   


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