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Article type: Research Article
Authors: Pires, Danúbia | Serra, Ginalber
Affiliations: Federal Institute of Education, Science and Technology, São Luis–MA, Brazil
Correspondence: [*] Correspondence author. Ginalber Serra, Federal Institute of Education, Science and Technology, São Luis–MA, Brazil. E-mail: [email protected].
Abstract: A methodology to systems identification based on Evolving Fuzzy Kalman Filter, is proposed in this paper. The mathematical formulation using an evolving Takagi-Sugeno (TS) structure, is presented: the offline Gustafson Kessel (GK) algorithm is used for initial parametrization of antecedent of the fuzzy Kalman filter inference system, considering an initial data set; and an evolving version of the GK algorithm is developed for online parametrization of antecedent of the fuzzy Kalman filter inference system. A fuzzy recursive version of OKID (Observer/Kalman Filter Identification) algorithm is proposed for parametrizing the matrices A, B, C, D and K (state matrix, input influence matrix, output influence matrix, direct transmission matrix, and Kalman gain matrix, respectively), in the consequent of the fuzzy Kalman filter inference system. Computational and experimental results from the estimation of the states and outputs of a dynamic system and a two-degree-of-freedom (2DoF) Helicopter, respectively, show the efficiency and applicability of the proposed methodology.
Keywords: Evolving, fuzzy Kalman filter, Takagi-Sugeno
DOI: 10.3233/JIFS-17087
Journal: Journal of Intelligent & Fuzzy Systems, vol. 35, no. 2, pp. 1819-1834, 2018
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