Journal
APPLIED MATHEMATICS LETTERS
Volume 132, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.aml.2022.108194
Keywords
Eigenvalue bounds; Continuous algebraic Riccati equation
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Funding
- Siyuan Scholarship of Xian Jiaotong University, China
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In this paper, we investigate the eigenvalues of the solution to the continuous algebraic Riccati equation without assuming the positivity of A+A(T). We also propose a possible improvement and provide a numerical example to illustrate the new result.
Under the assumption that A + A(T) is positive semi-definite, Liu et al. (2010) proposed an upper bound for the eigenvalues of the solution K of the continuous algebraic Riccati equation A(T)K + KA -KRK = -Q where Q is positive semi-definite and R is positive definite. In this paper, we complement Liu et al.'s result without assuming the positivity of A+A(T). A possible improvement is also proposed and a numerical example is presented to illustrate the new result. (C) 2022 Elsevier Ltd. All rights reserved.
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