Search Results 1-20 of 57

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  • REACTOR TEMPERATURE CONTROL SYSTEM BASED ON MULTI-MODEL PREDICTIVE CONTROL

    Yun Yu , Jian Sun , Hongchun Liu , Pan Zhu , Jixiang Zhou , Qi Ye

    … But the temperature control system must also consider the quicker response and capacity to the wide range change of load, this paper based on point-kinetic model and heat transfer model in reactor, designs a suitable temperature model for control system. … Considering that the traditional PID control method is difficult to solve the robustness and stability of high-order systems for large range operation, this paper uses Multi-model Predictive Control to solve this problem. …

    The Proceedings of the International Conference on Nuclear Engineering (ICONE) 2019.27(0), 1160, 2019

    J-STAGE 

  • Accuracy of Weak-Form Discretisation and Extention of Recursive Transfer Method for Scattering Problems Governed by Fourth-Order Differential Equation

    Kato Hatsuhiro , Kato Hatsuyoshi

    Journal of the Physical Society of Japan 85(5), 054001-1-7, 2016-05

    DOI 

  • Computational Simulation of Millimetre Wave Radar with a Modifed Ray Tracing Renderer

    Trevor G. Anderson , David G. Johnson

    IEICE Proceeding Series (37), S2.1.6, 2015

    DOI 

  • Application of the Recursive Transfer Method to Flexural Waves II: Reflection Enhancement Caused by Resonant Scattering in Acoustic Waveguide

    KATO Hatsuhiro , KATO Hatsuyoshi , ISHII Takaaki

    … Resonant scattering of flexural waves in acoustic waveguide is analysed by using the recursive transfer method (RTM). …

    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E98.A(1), 354-361, 2015

    J-STAGE 

  • Weak-Form Discretization Scheme for Recursive Transfer Method and the Discretization Errors  [in Japanese]

    Kato Hatsuhiro , Kato Hatsuyoshi

    逐次伝達法(RTM)は,Numerov法を用いて開発された数値計算法で,局在波が関与する散乱問題の解析に適している.しかし,Numerov法の離散化に関する制限からRTMの適用範囲が限られていた.そこで,新たな離散化スキームが提案されるとともにRTMの適用範囲も拡張されている.このスキームの下で1次元散乱問題を議論し,RTMの誤差を評価するとともに高い精度が実現できることを示した.

    Transactions of the Japan Society for Industrial and Applied Mathematics 25(1), 31-46, 2015

    J-STAGE 

  • New Analytical Design Methods for Two-Dimensional Filters

    Radu Matei

    IEICE Proceeding Series (20), T9, 2014

    DOI 

  • Application of the Recursive Transfer Method to Flexural Waves I: Novel Discretization Scheme Using Weak Form Theory Framework and Waveguide Modes on Inhomogeneous Elastic Plates

    KATO Hatsuhiro , KATO Hatsuyoshi

    … Flexural waves on a thin elastic plate are governed by the fourth-order differential equation, which is attractive not only from a harmonic analysis viewpoint but also useful for an efficient numerical method in the elastdynamics. … The discretization method proposed in this study is of preliminary consideration about the recursive transfer method (RTM) to analyse the scattering problem of flexural waves. …

    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E97.A(5), 1075-1085, 2014

    J-STAGE 

  • A Closed-Form Design of Linear Phase FIR Band-Pass Maximally Flat Digital Differentiators with an Arbitrary Center Frequency

    YOSHIDA Takashi , SUGIURA Yosuke , AIKAWA Naoyuki

    … In this paper, we introduce a design method of linear phase FIR band-pass MFDDs with an arbitrary center frequency. … The proposed transfer function for both of TYPE III and TYPE IV can be achieved as a closed form function using Jacobi polynomial. … Furthermore, we can easily derive the weighting coefficients of the proposed MFDDs using recursive formula. …

    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E97.A(12), 2611-2617, 2014

    J-STAGE 

  • Frequency Spectrum Connection Method for High Time-Resolution of Delay Profile in Digital Terrestrial Television Broadcasting  [in Japanese]

    NAKAMURA Akira , ITAMI Makoto

    … 伝達特性が欠落している.また,各チャネルは独立に放送されているため,シンボルタイミングが異なる.そこで,本稿では新たな複数チャネルの連結法について提案する.提案法では,信号帯域外の伝達特性はRLS (Recursive Least Square)アルゴリズムに基づく適応フィルタにより外挿される.また,外挿された伝達特性の重なりを利用し隣接するチャネルのシンボルタイミングの同期が行われる.コンピュータシミュレーションによる …

    ITE Technical Report 38.30(0), 37-40, 2014

    J-STAGE 

  • New Formulation for the Recursive Transfer Method Using the Weak Form Theory Framework and Its Application to Microwave Scattering

    KATO Hatsuhiro , KATO Hatsuyoshi

    … The recursive transfer method (RTM) is a numerical technique that was developed to analyze scattering phenomena and its formulation is constructed with a difference equation derived from a differential equation by Numerov's discretization method. … However, the differential equation to which Numerov's method is applicable is restricted and therefore the application range of RTM is also limited. …

    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E96.A(12), 2698-2708, 2013

    J-STAGE 

  • The localized wave effect of the microwave absorption rate using Recursive Transfer Method  [in Japanese]

    Akiyama Shogo , Kato Hatsuhiro , Sugiyama Jun-ichi

    マイクロ波照射による各種実験機器の高機能化を実現するには,電磁波吸収材の形状と設置位置が重要であることが知られている。本研究では、マイクロ波照射中も照射対象の様子を観察できる観察導波管を用いて、電磁波吸収材の温度上昇からマイクロ波吸収効率の場所依存を明らかにする。また、得られた実験結果から局在波の抽出が可能な新しい数値解析方法である逐次伝達法(RTM)を用いて解析することで、吸収の場所依存性の原因 …

    IEICE technical report. Microwaves 112(355), 73-76, 2012-12-13

  • C-15-18 Weak form scheme of the recursive transfer method and extraction of localized wave in a wave guide  [in Japanese]

    Kato Hatsuhiro , Nakazawa Ryouhei , Kato Hatsuyoshi

    Proceedings of the IEICE General Conference 2012年_エレクトロニクス(1), 325, 2012-03-06

  • A Design of Virtual Overlay Network Mechanism  [in Japanese]

    寺西 裕一 , 秋山 豊和 , 岡村 真吾 [他] , 竹内 亨 , 武本 充治 , 野本 義弘

    … To enable carry and forward type message exchanges and hierarchical groups, we propose a design of VON that uses transfer certificates, which can prove the affiliated group of the message sender and forwarders, and recursive message encryptions. … Moreover, our method makes authorized data sessions when adjacent nodes can directly connect to each other and both belong to the same group to reduce overhead for creating and verifying certificates and exchanging certificate data. …

    情報処理学会研究報告 2010年度(6), 1-8, 2011-04

  • A Design of Virtual Overlay Network Mechanism  [in Japanese]

    寺西 裕一 , 秋山 豊和 , 岡村 真吾 , 竹内 亨 , 武本 充治 , 野本 義弘

    … To enable carry and forward type message exchanges and hierarchical groups, we propose a design of VON that uses transfer certificates, which can prove the affiliated group of the message sender and forwarders, and recursive message encryptions. … Moreover, our method makes authorized data sessions when adjacent nodes can directly connect to each other and both belong to the same group to reduce overhead for creating and verifying certificates and exchanging certificate data. …

    研究報告マルチメディア通信と分散処理(DPS) 2011-DPS-146(28), 1-8, 2011-03-03

  • Recursive Transfer Method as an Accurate Numerical Method to Analyze the Scattering of the Electromagnetic Wave  [in Japanese]

    KATO Hatsuhiro , KITANI Masanori , KATO Hatsuyoshi

    逐次伝達法は,電子波に関して開発された方法であるが,波動の伝搬を逐次伝達行列により表現することで境界条件を一般化できる汎用性の高い数値計算法である.ここでは,電磁波散乱に関する定式化の詳細をまとめるとともに,導波管に設置されたスリットによるマイクロ波の透過率を解析することで,この方法の有効性を実証的に検討する.

    The transactions of the Institute of Electronics, Information and Communication Engineers. C 94(1), 1-9, 2011-01-01

    References (14)

  • Acceleration and Performance Evaluation of the Stereo-matching Program on Some Many-core Processors  [in Japanese]

    岩田 健司 , 中村 良介 , 田中 良夫 [他] , 増田 知記 , 町田 亮介 , 小島 功 , 関口 智嗣

    … ZNCC (Zero mean Normalized Cross Correlation) and census transform are evaluated as the correlation method. … The recursive calculation is implemented to accelerate ZNCC. … The optimized program on Cell (PowerXCell 8i) is about 414 to 765 times faster than original program on PPE by optimizing the DMA transfer in SPE. …

    情報処理学会論文誌コンピューティングシステム(ACS) 3(3), 178-188, 2010-09-17

    IPSJ 

  • Direct current electric potentials for a multilayered earth with arbitrary electrode configurations : Derivation of theoretical recurrence formulas for a point current source excitation  [in Japanese]

    MITSUHATA Yuji , UEDA Takumi

    水平多層構造モデル中の任意の位置に存在する点電流源によって生じる電位分布を計算するために, Sato(2000)によって示された漸化式導出手順を使って, 新たに理論式を導出した。理論式に含まれる各係数は, 上方接続と下方接続によって順次計算される漸化式によって記述される。その過程で, Sato(2000)では明示的には考慮されていなかった層境界に点電流源が存在する場合についても考察した。さらに, …

    BUTSURI-TANSA(Geophysical Exploration) 63(2), 197-208, 2010-04-01

    J-STAGE  References (22) Cited by (1)

  • An Analysis Using Recursive Transfer Method on Monochromatic Electron-Source Induced by Two-Dimensional Structural Modulation  [in Japanese]

    HONDA Tetsuya , KATO Hatsuyoshi , KATO Hatsuhiro

    半導体基板上の二次元電子の動きをゲート電極により制御することで電子の共鳴透過を実現し,単色電子源として利用可能であることが知られている.固体中の伝導現象を解析するために開発された逐次伝達法(RTM)を用いると,この二次元電子のゲート電極での滞在時間を解析できることを示す.

    The IEICE transactions on electronics C 91(7), 393-395, 2008-07-01

    References (7)

  • Microwave absorption of catalyst in a thermal decomposition reaction by recursive transfer method

    KATO H. , Kanno Yoshinori

    Japanese journal of applied physics 47(6), 4846-4850, 2008-06

    DOI  Cited by (1)

  • Recursive TLS algorithm for estimation of Pulse Transfer Functions

    Haraguchi Shinji , Kanae Shunshoku , Yang Zi-Jiang , Wada Kiyoshi

    … It is well known that the least-squares (LS) method gives biased parameter estimates of transfer functions when the output measurement is corrupted by white noise. … One possible approach for solving this bias problem is the total-least-squares (TLS) method. …

    Proceedings of the ISCIE International Symposium on Stochastic Systems Theory and its Applications 2008(0), 20-25, 2008

    J-STAGE 

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