Search Results for author: Yutaka Hori

Found 12 papers, 1 papers with code

Analysis of Signal Distortion in Molecular Communication Channels Using Frequency Response

no code implementations29 Mar 2024 Shoichiro Kitada, Taishi Kotsuka, Yutaka Hori

Toward control of the reaction systems as desired via MC, it is important to transmit signals without distortion by MC since the reaction systems are often triggered depending on the concentration of signaling molecules arriving at the cells.

Stability analysis for large-scale multi-agent molecular communication systems

no code implementations12 Nov 2023 Taishi Kotsuka, Yutaka Hori

Molecular communication (MC) is recently featured as a novel communication tool to connect individual biological nanorobots.

Stability analysis for circulant structured multi-agent molecular communication systems

no code implementations24 Jan 2023 Taishi Kotsuka, Yutaka Hori

In this paper, we introduce the system theoretic model for the multi-agent MC systems represented by multi-input and multi-output (MIMO) systems using the transfer functions, and then propose a method to analyze the stability for the special case of the circulant structured multi-agent MC systems.

On Phase Change Rate Maximization with Practical Applications

no code implementations12 Jan 2023 Chung-Yao Kao, Shinji Hara, Yutaka Hori, Tetsuya Iwasaki, Sei Zhen Khong

We recapitulate the notion of phase change rate maximization and demonstrate the usefulness of its solution on analyzing the robust instability of a cyclic network of multi-agent systems subject to a homogenous multiplicative perturbation.

A Control-theoretic Model for Bidirectional Molecular Communication Systems

no code implementations26 Oct 2022 Taishi Kotsuka, Yutaka Hori

Molecular communication (MC) enables cooperation of spatially dispersed molecular robots through the feedback control mediated by diffusing signal molecules.

Frequency response of diffusion-based molecular communication channels in bounded environment

no code implementations25 Mar 2022 Taishi Kotsuka, Yutaka Hori

Recently, molecular communication (MC) has been studied as a micro-scale communication between cells or molecular robots.

Exact Instability Margin Analysis and Minimum-Norm Strong Stabilization -- phase change rate maximization --

no code implementations19 Feb 2022 Shinji Hara, Chung-Yao Kao, Sei Zhen Khong, Tetsuya Iwasaki, Yutaka Hori

This paper is concerned with a new optimization problem named "phase change rate maximization" for single-input-single-output linear time-invariant systems.

Two-step reinforcement learning for model-free redesign of nonlinear optimal regulator

1 code implementation5 Mar 2021 Mei Minami, Yuka Masumoto, Yoshihiro Okawa, Tomotake Sasaki, Yutaka Hori

To overcome this limitation, we propose a model-free two-step design approach that improves the transient learning performance of RL in an optimal regulator redesign problem for unknown nonlinear systems.

Offline RL reinforcement-learning +1

Interval Analysis of Worst-case Stationary Moments for Stochastic Chemical Reactions with Uncertain Parameters

no code implementations8 Feb 2021 Yuta Sakurai, Yutaka Hori

More specifically, we formulate a semidefinite program to compute the intervals of the stationary solution of uncertain moment equations whose parameters are given only partially in the form of the statistics of their distributions.

Robust Instability Radius for Multi-agent Dynamical Systems with Cyclic Structure

no code implementations27 Jan 2021 Shinji Hara, Tetsuya Iwasaki, Yutaka Hori

This paper is concerned with robust instability analysis for linear multi-agent dynamical systems with cyclic structure.

Instability Margin Analysis for Parametrized LTI Systems with Application to Repressilator

no code implementations25 Aug 2020 Shinji Hara, Tetsuya Iwasaki, Yutaka Hori

This paper is concerned with a robust instability analysis for the single-input-single-output unstable linear time-invariant (LTI) system under dynamic perturbations.

Robust Instability Analysis with Application to Neuronal Dynamics

no code implementations4 Mar 2020 Shinji Hara, Tetsuya Iwasaki, Yutaka Hori

This paper is concerned with robust instability analysis of linear feedback systems subject to a dynamic uncertainty.

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