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- Takayuki Ishizaki, Kenji Kashima, Antoine Girard, Jun-ichi Imura, Luonan Chen, Kazuyuki Aihara
- Automatica
- 2015

This paper proposes a clustered model reduction method for semistable positive linear systems evolving over directed networks. In this method, we construct a set of clusters, i.e., disjoint sets ofâ€¦ (More)

- Kenji Kashima, Yutaka Yamamoto
- Proceedings of the 44th IEEE Conference onâ€¦
- 2005

This paper considers Hâˆž-control of infinite-dimensional systems whose transfer functions are expressible as the cascade connection of a rational transfer matrix and a scalar (possibly irrational)â€¦ (More)

- Kenji Kashima, Tatsuma Yamamoto, Yutaka Yamamoto
- Proceedings of the 45th IEEE Conference onâ€¦
- 2006

This paper investigates a general structure of internally stabilizing and suboptimal Hinfin controllers for a class of infinite-dimensional systems. This is done by extending Smith predictors byâ€¦ (More)

- Takayuki Ishizaki, Kenji Kashima, Jun-ichi Imura, Kazuyuki Aihara
- IEEE Transactions on Automatic Control
- 2014

This paper proposes two model reduction methods for large-scale bidirectional networks that fully utilize a network structure transformation implemented as positive tridiagonalization. First, weâ€¦ (More)

- Kenji Kashima, Yutaka Yamamoto
- Automatica
- 2007

System theory for numerical analysis has recently become a focus of research. In this paper we regard dynamics of Newtonâ€™s method as a nonlinear feedback system and derive convergence conditions,â€¦ (More)

- Takayuki Ishizaki, Kenji Kashima, Antoine Girard, Jun-ichi Imura, Luonan Chen, Kazuyuki Aihara
- 2012 IEEE 51st IEEE Conference on Decision andâ€¦
- 2012

In this paper, based on a notion of network clustering, we propose a state aggregation method for positive systems evolving over directed networks, which we call positive networks. In the proposedâ€¦ (More)

- Kenji Kashima, Yutaka Yamamoto
- Systems & Control Letters
- 2008

In this paper, Hâˆž control for a class of linear time invariant systems with infinitely many unstable poles is considered. An example of such a plant is a high gain system with delayed feedback. Weâ€¦ (More)

- Jun-ichi Imura, Kenji Kashima, Masami Kusano, Tsukasa Ikeda, T. Morohoshi
- Philosophical transactions. Series Aâ€¦
- 2010

In terms of a piecewise affine system representation, which is a kind of hybrid system model, this article discusses a series of approaches to modelling, analysing and synthesizing a biologicalâ€¦ (More)

- Hwayeong Yu, Kenji Kashima, J. Imura
- 2008 SICE Annual Conference
- 2008

In this paper, the stability of incompressible 2D channel flow is investigated. This problem has many practical applications. However, since the flow dynamics is described by a nonlinear partialâ€¦ (More)

- Kenji Kashima
- 2007 European Control Conference (ECC)
- 2007

In this paper, by applying some results on infinite-dimensional control theory, a closed formula for the H2 performance limit is derived for systems that can be expressed as a series connection of aâ€¦ (More)