Diseño y simulación de un controlador DSMC empleando una superficie móvil de tipo rotante junto con técnicas de lógica difusa aplicado a un proceso de neutralización de pH y un tanque de mezclado con retardo variable.

Abstract

This work presents the design, simulation and comparison of the DSMC controller with a rotating type moving surface implemented by using fuzzy logic techniques. It is compared with the SMC and DSMC controllers proposed by Camacho-Smith and Baez respectively applied to two chemical processes. For this purpose, the two processes are approximated to a first order model with dead time or FOPDT, because this model simplifies both the design and the tuning of the controllers. To carry out the comparative analysis of the controllers, the performance indices ISE, ITSE and the control effort index are used, as well as the settling time response when the processes are subjected to step-type reference changes and non-modeled disturbances. Finally, a graphical interface is used where the results obtained from the process simulations are displayed, i.e., control signals, the process output and controller performance indices. Also, it allows to modify the step type reference and non-modeled disturbances.