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Obara, Mitsuaki; Sato, Kazuhiro; Sakamoto, Hiroki; Okuno, Takayuki; Takeda, Akiko
IEEE transactions on automatic control, 03/2024, Volume: 69, Issue: 3Journal Article
We consider an identification method for a linear continuous time-invariant autonomous system from noisy state observations. In particular, we focus on the identification to satisfy the asymptotic stability of the system with some prior knowledge. To this end, we propose to model this identification problem as a Riemannian nonlinear optimization (RNLO) problem, where the stability is ensured through a certain Riemannian manifold and the prior knowledge is expressed as nonlinear constraints defined on this manifold. To solve this RNLO, we apply the Riemannian sequential quadratic optimization (RSQO) that was proposed by Obara, Okuno, and Takeda (2022) most recently. RSQO performs quite well with theoretical guarantee to find a point satisfying the Karush-Kuhn-Tucker conditions of RNLO. In this article, we demonstrate that the identification problem can be indeed solved by RSQO more effectively than competing algorithms.
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