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Avtometriya

2013 year, number 6

Analytical Synthesis of Invariant Reduced-Order State Observers

A. Z. Asanov, D. N. Dem’yanov
Kazan (Volga Region) Federal University, ul. Kremlлvskaya 18, Kazan, 420008 Russia
Keywords: reduced order observer, external disturbances, invariance, canonization of matrices, synthesis algorithm

Abstract

An algorithm for the analytical synthesis of reduced-order observers for dynamic systems with an output matrix of arbitrary form is proposed, and invariance conditions for the constructed observer with respect to external disturbances are formulated. Solvability conditions for the synthesis problem are obtained in the form of a system of linear matrix equations. The proposed algorithm is based on a nondegenerate transformation of the state vector using the matrix canonization technique and methods for solving linear matrix equations of arbitrary dimension.