Search Results 1-20 of 240

  • Attitude Control of a Spacecraft as an LPV Model Using the ILQ Method

    SHIMOMURA Takashi , OGURA Hayate , KANATA Sayaka

    … <p>In this paper, we develop a new gain-scheduled (GS) controller for attitude control of spacecraft when the plant models are given as linear parameter-varying (LPV) systems. … performance evaluation, we introduce the inverse linear quadratic (ILQ) method, while generalizing the existing theory for linear time-invariant (LTI) systems to that for LPV systems. … The existing optimality condition is also rebuilt in a linear matrix inequality (LMI) condition and generalized for LPV systems. …

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN 18(6), 344-349, 2020

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  • Tracking control of a robot manipulator by quasi-LPV NMPC  [in Japanese]

    YAMAMOTO Shunya , WADA Nobutaka

    The Proceedings of Conference of Chugoku-Shikoku Branch 2020.58(0), 09c7, 2020

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  • Synthesis of Memory Gain-Scheduled Controllers for Discrete-Time LPV Systems

    MASUBUCHI Izumi , YABUKI Yuta

    <p>This paper considers synthesis of discrete-time gain-scheduled controllers for linear parameter varying systems based on linear matrix inequalities (LMIs). Unlike most of the previous results …

    SICE Journal of Control, Measurement, and System Integration 13(5), 249-255, 2020

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  • Bayesian LPV-FIR Identification of Wheelchair Dynamics and Its Application to Feedforward Control

    FUJIMOTO Yusuke , TOKUSHIGE Tatsuki , NAGAHARA Masaaki

    <p>This paper constructs a mathematical model of wheelchair dynamics in a data-driven manner. In particular, we focus on the forward-backward movement of the wheelchair, for which we adopt a lin …

    SICE Journal of Control, Measurement, and System Integration 13(4), 208-213, 2020

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  • Simple Tuning and Low-Computational-Cost Controller for Enhancing Energy Efficiency of Autonomous-Driving Electric Vehicles

    Hattori Mitsuhiro , Fujimoto Hiroshi , Hori Yoichi , Takeda Yusuke , Sato Koji

    … By the approximated linear-parameter-varying (LPV) modeling of a vehicle and a motor, we considered the energy loss in the cost function of the LQR. … The effect of changing this parameter, the solver of the LQR for the LPV model, and the influence of the approximation of the models were analyzed. …

    IEEJ Journal of Industry Applications 9(4), 358-365, 2020

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  • Relative Importance of Biological Parameters in Mongolian Youth  [in Japanese]

    FUJII Katsunori , HASHIZUME Kazuo , KASUYA Kosuke , Munkhzul Purevsuren , Tserenvandan Khulgar , Davaasuren Enkhjin

    We identified biological parameters based on cross-sectional height data in Mongolia and analyzed theheight growth of Mongolian youth. We then attempted to elucidate the relationship between physical …

    The Journal of Education and Health Science 65(4), 258-266, 2020

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  • Dyslipidemia and cardiovascular disease in Vietnamese people with HIV on antiretroviral therapy

    Mizushima Daisuke , Dung Nguyen Thi Hoai , Dung Nguyen Thi , Matsumoto Shoko , Tanuma Junko , Gatanaga Hiroyuki , Trung Nguyen Vu , Kinh Nguyen Van , Oka Shinichi

    … <p>With expanding antiretroviral therapy (ART) in Vietnam, the use of second-line ART with ritonavir-boosted lopinavir (LPV/r) is increasing. … However, little is known regarding the effect of LPV/r on dyslipidemia (DL) and cardiovascular disease (CVD) in people with HIV in Vietnam. … A total of 10.5% of the subjects had exposure to LPV/r. … 95% CI, 0.264-0.424), and LPV/r exposure (OR = 3.251; …

    Global Health & Medicine 2(1), 39-43, 2020

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  • LCToolbox: Facilitating Optimal Linear Feedback Controller Design

    Swevers Jan , Jacobs Laurens , Singh Taranjitsingh , Turk Dora , Verbandt Maarten , Pipeleers Goele

    … Moreover, LCToolbox supports state-of-the-art B-spline-based linear parameter-varying (LPV) modeling and controller design techniques, unlocking the true potential of advanced feedback controller synthesis methodologies. … The design of an LPV controller for an overhead crane is used as a running example throughout the paper to illustrate all features of LCToolbox.</p> …

    IEEJ Journal of Industry Applications 9(2), 109-116, 2020

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  • Attitude Control and Unloading for Spacecraft with Redundant Reaction Wheels under Nonstationary Angular Velocity Requirement  [in Japanese]

    Kanata Sayaka , Shimomura Takashi , Yamase Tatsuya

    … <p>We applied the LPV (Linear Parameter-Varying) control theory to attitude control for spacecraft. … In this paper, a method to apply the LPV control theory to the tracking problem of the attitude as well as the angular velocity. …

    JOURNAL OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES 67(5), 143-151, 2019

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  • A Calculation Method of Parameter-dependent LMIs on Nonlinear Affine Basis  [in Japanese]

    KOJIMA Akira

    <p>A calculation method of polynomially parameter-dependent LMIs (Linear Matrix Inequalities) is proposed by employing Bernstein polynomial basis. Based on the fundamental properties of the Bern …

    Transactions of the Society of Instrument and Control Engineers 55(7), 429-438, 2019

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  • DEVELOPMENT AND VALIDATION OF AN ANALYTICAL METHOD UPLC-MS-MS FOR THE DETECTION OF ANTIRETROVIRALS IN AMNIOTIC LIQUID

    Rodriguez Delgado Rosa G. , Hernandez Pineda Jessica , Ramirez Ramirez Alicia , Figueroa Damian Ricardo , Lopez Martinez Margarita , Martinez Juarez Alejandro

    … <p>The first-line antiretroviral treatment to prevent HIV vertical transmission is the high activity antiretroviral therapy HAART composing of Lamivudine, LMV, Zidovudine, ZDV, Lopinavir, LPV and Ritonavir, RTV. …

    Proceedings for Annual Meeting of The Japanese Pharmacological Society WCP2018(0), PO3-9-25, 2018

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  • SIMULTANEOUS QUANTIFICATION OF LAMIVUDINE, ZIDOVUDINE, LOPINAVIR AND RITONAVIR BY UPLC-ESI-MS-MS IN PLASMA AND BREAST MILK OF HIV-PREGNANT WOMEN FOR THERAPEUTIC DRUG MONITORING

    Hernandezpineda Jessica , Ramirez-Ramirez Alicia , Plazola-Camacho Noemi , Dominguez-Castro Mauricio , Mancilla-Herrera Ismael , Figuero-Damian Ricardo , Lopez-Martinez Margarita , Sanchez-Serrano Elias

    … LMV, 230.18-112.08, ZDV, 268.22-127.10, LPV 629.55-447.35, and RTV 721.50-296.20. … Finally, ten plasma samples from eight HIV-positive women, in the third trimester of pregnancy and nine colostrum samples were assayed.</p><p>RESULTS</p><p>Methods validation were conducted over a range ng-mL between 50-3000, 75-4500, 250-15,000 and 25-500 for LMV, ZDV, LPV and RTV for plasma samples. …

    Proceedings for Annual Meeting of The Japanese Pharmacological Society WCP2018(0), PO2-11-22, 2018

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  • Velocity Control of Electric Aircraft via LPV Control Theory  [in Japanese]

    Sutani Kazuya , Shimomura Takashi , Kanata Sayaka

    Proceedings of the Japan Joint Automatic Control Conference 61(0), 1713-1720, 2018

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  • Multi-objective Steering Law Design for Attitude Control of a Spacecraft with CMGs  [in Japanese]

    Sasaki Takahiro , Shimomura Takashi , Kanata Sayaka

    … Regarding the control law, we apply a GS (Gain-Scheduled) controller via LPV control theory while introducing a Parameter-Dependent Coordinate Transformation.</p> …

    Transactions of the Institute of Systems, Control and Information Engineers 31(8), 305-311, 2018

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  • Incentive Stackelberg Strategies for LPV Systems  [in Japanese]

    Kawakami Kyohei , Mukaidani Hiroaki , Sagara Muneomi

    … <p>Incentive Stackelberg strategy for linear parameter varying (LPV) systems with multiple decision makers is investigated. … The linear quadratic control (LQC) for the LPV systems are reformulated by means of matrix inequalities. …

    IEEJ Transactions on Electronics, Information and Systems 138(7), 838-845, 2018

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  • Aircraft Gust Alleviation Preview Control with a Discrete-Time LPV Model

    TAKASE Ryoichi , HAMADA Yoshiro , SHIMOMURA Takashi

    … The key points to improve control performance of this system are in both modeling accuracy of the linear parameter-varying (LPV) system with a small number of scheduling parameters and design of the advanced GS controller. … In this study, a discrete-time LPV model of the aircraft with a small number of essential scheduling parameters is proposed through a series of approximations based on understanding of flight dynamics. …

    SICE Journal of Control, Measurement, and System Integration 11(3), 190-197, 2018

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  • Informative Input Design for Bayesian Identification of LPV Systems

    FUJIMOTO Yusuke , KASAI Wataru , SUGIE Toshiharu

    … <p>This paper proposes an input design method for identification of linear-parameter-varying (LPV) systems. … In particular, this paper focuses on the Bayesian estimation of LPV systems, especially the impulse responses of LPV systems at the scheduling variable of interest. …

    SICE Journal of Control, Measurement, and System Integration 11(3), 214-220, 2018

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  • Aircraft Control via LPV Control Theory  [in Japanese]

    SHIMOMURA Takashi

    Journal of The Society of Instrument and Control Engineers 57(4), 272-278, 2018

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  • LMI-based Mixed <i>H</i><sub>2</sub>/<i>H</i><sub>∞</sub> Control with Regional Constraints for Spacecraft Attitude Tracking

    SASAKI Takahiro , SHIMOMURA Takashi , KANATA Sayaka

    … To overcome this problem, this paper applies the linear parameter-varying (LPV) control theory to the attitude control for a spacecraft with reaction wheels (RWs). … The LPV control theory can provide a gain-scheduled (GS) controller by using linear matrix inequalities (LMIs) for the mixed <i>H</i><sub>2</sub>/<i>H</i><sub>∞</sub> …

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN 16(1), 75-80, 2018

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  • Design of robust AMB controllers for rotors subjected to varying and uncertain seal forces

    LAURIDSEN Jonas , SANTOS Ilmar

    … controller, designed to be robust against uncertainties in the dynamic seal model and III) a Linear Parameter Varying (LPV) controller, designed to provide a unified performance over a large operational speed range using the operational speed as the scheduling parameter. …

    Mechanical Engineering Journal 4(5), 16-00618-16-00618, 2017

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