A preconditioned block Arnoldi method for large scale Lyapunov and algebraic Riccati equations |
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Authors: | A Bouhamidi M Hached K Jbilou |
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Institution: | 1.L.M.P.A,Université du Littoral,Calais-Cedex,France;2.IUT Département de Chimie,Université de Lille 1,Villeneuve-d’Ascq,France |
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Abstract: | In the present paper, we propose a preconditioned Newton–Block Arnoldi method for solving large continuous time algebraic Riccati equations. Such equations appear in control theory, model reduction, circuit simulation amongst other problems. At each step of the Newton process, we solve a large Lyapunov matrix equation with a low rank right hand side. These equations are solved by using the block Arnoldi process associated with a preconditioner based on the alternating direction implicit iteration method. We give some theoretical results and report numerical tests to show the effectiveness of the proposed approach. |
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