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HYBRID SLIDING MODE CONTROLLER WITH FUZZY COMPENSATION IN THE SLIDING SURFACE
E. Iglesias1, M. Sanjuan2, Y. Garcia1, O. Camacho3, C. Smith4, A. Kandel5
1 Departemento de Operaciones Unitarias. Universidad de los Andes, Venezuela.
2 Mechanical Engineering Department. Universidad del Norte, Colombia.
3 Departamento de Circuitos y Medidas. Universidad de los Andes, Venezuela.
4 Chemical Engineering Department. University of South Florida, USA.
5 Computer Science and Engineering Department, University of South Florid, USA.
A new form of a sliding mode controller is presented to deal with pH control. It is based on a combination of Sliding Mode Control and Fuzzy Logic. The conventional sliding surface (calculated from an FOPDT model) is modified using a set of fuzzy rules, which are similar to that of a Fuzzy Logic Controller (FLC). This confers to the controller robustness and flexibility to deal with the highly nonlinear behavior found in a neutralization reactor. The new controller performance is compared with a conventional sliding mode controller and PID.
Keywords: Process Control, Sliding Mode Control, Fuzzy Control, Fuzzy Hybrid Systems, pH control
Session slot T-Mo-M21: Posters of Industrial Applications/Area code 7a : Chemical Process Control
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