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Journal of applied research and technology
versión On-line ISSN 2448-6736versión impresa ISSN 1665-6423
J. appl. res. technol vol.5 no.1 Ciudad de México abr. 2007
Tracking unmodelled signals of nonlinear systems via robust sliding mode observer: application to reacting systems
R. Aguilar-López1,2 G. Soto-Cortés1, M.I. Nería-González2 & R. Escarela-Pérez1
1Departamento de Energía, Universidad Autónoma Metropolitana-Azcapotzalco, Av. San Pablo No. 180, Reynosa-Tamaulipas, 02200; Azcapotzalco, México, D.F. MEXICO E-mail.- raguilar@correo.azc.uam.mx , Fax.- + (52) 5394 7378.
2Departamento de Biotecnología y Bioingeniería. CINVESTAV-IPN.
Abstract
The problem of the on-line estimation of the reaction heat in a continuous stirred tank reactor from temperature measurements is addressed in this paper. The proposed uncertainty observer is based on differential algebraic techniques, such that the algebraic observability condition of the uncertainty from noisy temperature measurements is easily verified and the observer structure is very simple, which lead to feasible implementation. The observer proposed is robust against noisy measurements and sustained disturbances. The good performance of the observer is shown by means of numerical simulations.
Keywords: uncertainty observer, noisy measurements, sustained disturbances, robustness.
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6. REFERENCES
[1] Schuler, H. and Schmidt, C. Calorimetric-state estimator for chemical reactors diagnosis and control: review of methods and applications. Chem. Eng. Sci. (1992), 47, 899-915. [ Links ]
[2] Alvarez-Ramirez, J., Aguilar, R. and López-Isunza. F. Robust regulation of temperature in reactor-regenerator fluid catalytic cracking units. Industrial Engineering ChemistryResearch. (1996), 35, 1652-1659. [ Links ]
[3] Aguilar, R., Alvarez Jo., González, J. and Barrón M. A. A strategy to regulate continuous fermentation process with unknown reaction rates. Journal of Chemical Technology and Biotechnology. (1996), 37, 4, 357-361. [ Links ]
[4] Elicabe, G. E., Ozdeger, E. and Georgakis, C. On line estimation of reaction rate in a polymerization process. Ind. Eng. Chem. Res. (1995), 34, 1219. [ Links ]
[5] Aguilar, R., González, J., Alvarez J. and Barrón, M. A. Temperature regulation of a class of continuous chemical reactor based on a nonlinear Luenberger-like observer. Journal of Chemical Technology and Biotechnology. (1997), 70, 3, 209-216. [ Links ]
[6] Ritt,J. F. Differential equations from the algebraic standpoint. Amer. Math Soc. New York. 1932. [ Links ]
[7] Fliess, M. Hasler, M. Questioning the classical state-space description via circuit example. Mathematical Theory of networks and systems. Boston, MA, USA. Birkhauser. 1990. [ Links ]
[8] Hasler, M. Neirynck, J. Nonlinear circuits. Boston, MA, USA. Artech House. 1986. [ Links ]
[9] Freedman, M. I., Willems, J. C. Smooth representation of systems with differentiated inputs. IEEE Transc. Aut. Contr. (1978), 23, 16-21. [ Links ]
[10] Fliess, M. Generalized controller canonical forms for linear and nonlinear dynamics. IEEE Transc. Aut. Contr. (1990), 35, 9, 994-1001. [ Links ]
[11] Martínez-Guerra, R. and León-Morales, J. de. Nonlinear estimators: A differential algebraic approach. Appl. Math. Lett. (1969), 9, 4, 21-25. [ Links ]
[12] Smith, C. A. and Corripio, A. Principles and Practice of automatic process control. John Wiley & Sons. 1980. [ Links ]
[13] Slotine, J., Hedrick, J. and Misawa, E. On sliding observers for non-linear systems. J. Dyn. Meas. & Ctrl. (1987), 109, 245-251. [ Links ]