Efficient iterative solutions to general coupled matrix equations

Authors:
Masoud Hajarian
Affiliations:
Department of Mathematics, Faculty of Mathematical Sciences, Shahid Beheshti University, Evin, Tehran, Iran 19839
Venue:
International Journal of Automation and Computing
Year:
2013

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Abstract

Linear matrix equations are encountered in many systems and control applications. In this paper, we consider the general coupled matrix equations (including the generalized coupled Sylvester matrix equations as a special case) Σt=1lEstYtFst = Gs, s = 1, 2, 驴, l over the generalized reflexive matrix group (Y1, Y2, 驴, Yl). We derive an efficient gradient-iterative (GI) algorithm for finding the generalized reflexive solution group of the general coupled matrix equations. Convergence analysis indicates that the algorithm always converges to the generalized reflexive solution group for any initial generalized reflexive matrix group (Y1(1), Y2(1), 驴, Yl(1)). Finally, numerical results are presented to test and illustrate the performance of the algorithm in terms of convergence, accuracy as well as the efficiency.