Updated on 2024/01/05

写真a

 
TANIGUCHI TOMOKI
 
Organization
Graduate School of Engineering Division of Aerospace and Marine-System Engineering Lecturer
School of Engineering Department of Marine System Engineering
Title
Lecturer
Affiliation
Institute of Engineering
Affiliation campus
Nakamozu Campus

Position

  • Graduate School of Engineering Division of Aerospace and Marine-System Engineering 

    Lecturer  2023.04 - Now

  • School of Engineering Department of Marine System Engineering 

    Lecturer  2023.04 - Now

Degree

  • 博士(工学) ( Osaka Prefecture University )

  • 修士(工学) ( Osaka Prefecture University )

  • 学士(工学) ( Osaka Prefecture University )

Research Areas

  • Frontier Technology (Aerospace Engineering, Marine and Maritime Engineering) / Marine engineering

Research Interests

  • Control strategy of Wave Energy Converter

  • Floating Type Wave Energy Converter

  • Motion Dynamics of Floating body

  • Ocean engineering

  • Naval architecture

Professional Memberships

  • The Japan Society of Naval Architects and Ocean Engineers

Awards

  • ORAL PRESENTATION AWARD

    Taniguchi, T., Umeda, J., Nimura, T., Fujiwara, T.

    2022.12   Grand Renewable Energy 2022 International Conference   EXPERIMENTAL VALIDATION OF NONLINEAR MODEL PREDICTIVE CONTROL FOR FLOATING POINT ABSORBER TYPE WAVE ENERGY CONVERTER WITH LINEAR GENERATOR

  • Paper Award of the Japan Society of Naval Architects and Ocean Engineers

    Taniguchi, T., Fujiwara, T., Umeda, J., Nimura, T., Katayama, T.

    2022.05   The Japan Society of Naval Architects and Ocean Engineers   Validation of Real-Time Nonlinear Model Predictive Control on Point Absorber Type Wave Energy Converter by Tank Test

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    Country:Japan

  • Hydrographic Technology Encouragement Award

    Okamoto, A., Taniguchi, T., Sato, T., Hirao, C. S., Inaba, S., Umeda, J.

    2022.03   Japan Hydrographic Association  

Job Career (off-campus)

  • Osaka Metropolitan University   Graduate School of Engineering, Department of Marine System Engineering

    2023.04 - Now

Papers

  • 2023S-GS6-4 Review and Proposal of Design Wave Determination method

    Yamamoto Yusuke, Goto Masahiro, Kodama Ryo, Taniguchi Tomoki, Katayama Toru

    Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers   36 ( 0 )   373 - 374   2023.06

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  • Development of model-based and model-free reactive control scheme: considering copper loss and movable-floater-displacement constraint for a wave energy converter

    Jun Umeda, Tomoki Taniguchi, Toshifumi Fujiwara

    Journal of Marine Science and Technology (Japan)   2023( ISSN:0948-4280

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    Publishing type:Research paper (scientific journal)  

    The utilization of wave energy is expected since ocean wave energy has a high potential. The improvement of the feasibility of wave energy converters requires control that maximizes the electric output energy, including the copper loss under a displacement constraint. Several model-based and model-free reactive controls have been developed. Although model-based reactive control attains high performance, it struggles to deal with modeling errors and forecasting wave excitation forces. On the other hand, the model-free reactive control can adapt to dynamic modeling, including modeling errors; however, it requires a vast amount of learning data and considerable time and effort to consider the displacement constraint. Model-based and model-free reactive controls each have advantages and disadvantages. Combined model-based and model-free reactive controls are desirable to freely switch between the model-based and model-free reactive controls based on various ocean situations. In this study, two equivalent model-based and model-free reactive controls that can consider the copper loss and displacement constraints without forecasting the wave excitation forces were proposed. The model-free reactive control was compared with the model-based reactive control and a conventional control using numerical simulations in irregular waves. The results of the simulation show that the proposed model-based reactive control achieves superior performance compared to that of the conventional control. The proposed model-free reactive control achieved comparable performance to that of the proposed model-based reactive control under various wave conditions. Moreover, the proposed model-free reactive control decreased the required training trials. The development of the two equivalent control schemes will lead to the proposal of combined model-based and model-free reactive controls in the future.

    DOI: 10.1007/s00773-023-00933-w

  • Study on Wear Estimation and Wear Reduction of the Floating Offshore Wind Observation System "Buoy Lidar"

    Yamamoto Yusuke, Goto Masahiro, Kodama Ryo, Taniguchi Tomoki, Katayama Toru

    Journal of the Japan Society of Naval Architects and Ocean Engineers   37 ( 0 )   27 - 36   2023( ISSN:18803717

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    <p> In this study, a wear amount estimation method is investigated using the data obtained from the 2<sup>nd</sup> Demonstration Experiment of the wind observation system off the coast of Sakata, the floating platform including the mooring system to reduce wear is optimized by using the estimation method. First, the wear condition of the mooring lines is investigated and it is found that the wear amount at the mooring point on the buoy side is the largest. Next, the cause of the higher progress wear than the expected design speed is investigated by numerical calculations, and it is confirmed that the proportionality constant in the wear evaluation formula proposed by Takeuchi et al. is changed according to the sea conditions, and the proportionality constant in the equation is determined. Finally, the floating platform including the mooring system is optimized by using the proposed method to reduce the wear amount of the mooring line, it is found the wear amount can be reduced by adjusting the length of the mooring line or the reduction of buoy weight</p>

    DOI: 10.2534/jjasnaoe.37.27

  • Motion Evaluation of Floating Point Absorber-type Wave Energy Converter by Kane's Equation

    Taniguchi Tomoki, Fujiwara Toshifumi, Umeda Jun, Nimura Tadashi, Katayama Toru

    Journal of the Japan Society of Naval Architects and Ocean Engineers   35 ( 0 )   65 - 76   2022( ISSN:18803717

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    Authorship:Lead author   Publishing type:Research paper (scientific journal)  

    <p>In this paper, we derive the equations of longitudinal motion for a floating point absorber type wave energy converter (FPAWEC) by Kane's equation. Since FPAWECs have a nonholonomic constraint, we selected Kane's equation which is based on the principle of virtual power. The time-domain motion equations of the FPAWEC with several control strategies were developed and its motion evaluations were conducted in regular and irregular waves. The motion evaluation results were reasonably consistent with the measured ones, both in regular and irregular waves. The dominant pitch motion in irregular waves was observed around pitch natural frequency. Using the derived equations, we investigated the pitch moment components and found that the pitch moment on the float had the largest contributions to pitching motion with the pitch natural frequency.</p>

    DOI: 10.2534/jjasnaoe.35.65

  • Mechanism of Inclination of Spar-Buoy with Ring-Fin Motion Stabilizer in Shallow Sea Caused by Tidal Currents and Waves and Avoidance of the Inclination Reviewed

    Yamamoto, Y, Katayama, T, Morimoto, T, Taniguchi, T, Hashimoto, H, Goto, M

    Journal of the Japan Society of Naval Architects and Ocean Engineers   33 ( 33 )   231 - 246   2021.06( ISSN:1880-3717

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    Publishing type:Research paper (scientific journal)  

    <p>The main topics of this paper are the motion characteristics of a spar-buoy. Motion measurements for the spar-buoy with and without a ring-fin motion stabilizer in currents and waves were carried out at the circular water channel and the towing tank of Osaka Prefecture University, to investigate the characteristics of its motion. Motion amplitude of the spar-buoy with the stabilizer is much smaller than the spar-buoy without the stabilizer, however, the spar-buoy with the stabilizer causes the inclination that means a time average value of motion and the inclination becomes larger according to increase in wave height. On the other hand, from the results in currents, the inclination of the spar-buoy with the stabilizer is much smaller than the results of the spar-buoy without the stabilizer, however, it is found that there is clear possibility that it has multi-balanced-inclinations for higher current velocity than the designed current velocity. The mechanisms of these unexpected phenomena were investigated, and it is indicated that they can be avoided to optimize cross-section shape of the stabilizer to change its characteristics of hydrodynamics.</p>

    DOI: 10.2534/jjasnaoe.33.231

    CiNii Article

  • Validation of Real-Time Nonlinear Model Predictive Control on Point Absorber Type Wave Energy Converter by Tank Test Reviewed

    Taniguchi, T., Fujiwara, T., Umeda, J., Nimura, T., and Katayama, T.

    Journal of the Japan Society of Naval Architects and Ocean Engineers   33 ( 33 )   247 - 256   2021.06( ISSN:1880-3717

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    Authorship:Lead author   Publishing type:Research paper (scientific journal)  

    DOI: 10.2534/jjasnaoe.33.247

  • Underwater Cruise Simulation of an Autonomous Underwater Vehicle Using a Nonlinear Model Predictive Control Reviewed

    Miyazawa, K., Arima, M, Taniguchi, T., Umeda, J, Fujiwara, T.

    Journal of the Japan Society of Naval Architects and Ocean Engineers   34 ( 34 )   99 - 107   2021.02( ISSN:1880-3717

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.2534/jjasnaoe.34.99

  • Development of an Onshore BenchTest System for a Wave Energy Converter and Verification of a Real-Time OptimalControl Reviewed

    Taniguchi, T., Fujiwara, T., Umeda, J., Nimura, T., and Katayama, T.

    Journal of the Japan Society of Naval Architects and Ocean Engineers   32 ( 32 )   99 - 108   2021( ISSN:1880-3717

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    Authorship:Lead author   Publishing type:Research paper (scientific journal)  

    DOI: 10.2534/jjasnaoe.32.99

  • Short-term Prediction of Output Power and Constrained Optimal Control for Point-Absorber Type Wave-Energy Converters with Linear Generators Reviewed

    Umeda, J., Fujiwara, T., and Taniguchi, T.

    Journal of the Japan Society of Naval Architects and Ocean Engineers   32 ( 32 )   91 - 98   2021( ISSN:1880-3717

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.2534/jjasnaoe.32.91

  • Path Following Control of Autonomous Underwater Vehicle Using Nonlinear Model Predictive Control Reviewed

    Taniguchi, T., Umeda, J., Fujiwara, T., Kim, K., Sato, T., Inaba, S.

    Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE   6B-2020   2020( ISBN:9780791884386

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    Authorship:Lead author   Publishing type:Research paper (international conference proceedings)  

    © 2020 American Society of Mechanical Engineers (ASME). All rights reserved. The path following control of an AUV considering arrival times at waypoints is proposed in this paper. The temporal constraint is considered by adding the surge velocity and the nominal thrust force as reference trajectory in the objective function of the nonlinear model predictive control (NMPC). The proposed control strategy uses fewer reference variables than conventional trajectory tracking problems. The simulated results of the proposed control strategy are compared to the NMRI Cruising AUV#4 actual dive data. The simulated arrival times of waypoints were matched well to the measured data. Two guidance laws, the line of sight with lookahead-based steering law and the pure pursuit guidance law, are also applied to NMPC to determine reference yaw angle.

    DOI: 10.1115/OMAE2020-18241

  • Study on a Wave Energy Converter With Tension Leg Mooring Under Optimal Control Reviewed

    Jun Umeda, Tomoki Taniguchi, Toshifumi Fujiwara

    Volume 10: Ocean Renewable Energy   2019.06

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    Publishing type:Research paper (international conference proceedings)  

    <title>Abstract</title>
    A safety assessment for wave energy converters (WECs) in model scale is necessary before a demonstration test. WECs have various control conditions such as a maintenance and power generation mode etc. Although the safety assessment is required to carry out while considering the control conditions, the motion and load characteristics of the moored WEC to which applies various control conditions remains unclear. This study investigated the motion and load characteristics of the WEC including a mooring system when each control conditions was used. In experiments, the motion and load characteristics of the WEC without control were revealed. In the simulation, the motion and load characteristics were compared between two control methods which are the resistive loading control (RLC) and the approximate complex-conjugate control with considering the copper loss (ACL). The control methods have little effects on the surging, pitching and bending moment of the WEC. Mooring tension increased with increasing wave period when the RLC was used. When the ACL was applied, mooring tension reached the peak value near the natural period and decreased with increasing the wave period. The difference in the trends leads to that the control method maximizing mooring tension is not necessarily the same in each wave period. The select of the operating condition based on the wave period is required when the mooring tension of the WEC is assessed in the model-scale test stage.

    DOI: 10.1115/omae2019-95650

  • Power Production Efficiency Improvement of a Point Absorber Type Wave Energy Converter by Model Predictive Control Reviewed

    Taniguchi, T, Fujiwara T, Inoue S, Ohtsuka T

    Journal of the Japan Society of Naval Architects and Ocean Engineers   ( 29 )   171 - 179   2019( ISSN:1880-3717

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    Authorship:Lead author   Publishing type:Research paper (scientific journal)  

    <p>This paper numerically investigates motion and power production characteristics of a point absorber type wave energy converter (WEC) using a model predictive control (MPC). The MPC is able to maximize power production while handling hard constraints, such as maximum motion, control force and so on. Motion and power production characteristics of the MPC were compared with two conventional control methods, the approximate complex-conjugate control with considering the copper loss (ACL) and the resistive loading control (RLC), under the sea condition of Japanese typical joint probability distribution based on a 21-year high-resolution hindcast dataset. From the numerical simulation, it was found that motion and power production characteristics of the MPC were comparable to these of the ACL if the wave height was low enough not to activate the MPC's constraints. As the wave height increased, the two conventional control methods, excluding the MPC, couldn't keep the WEC's motion constraint. Moreover, the sea conditions in which the WEC with the MPC can operate as the power production mode was broadened compared with the two conventional control methods. Through the numerical simulations, it can be said that the WEC with the MPC is feasible in the sea condition around Japanese coast.</p>

    DOI: 10.2534/jjasnaoe.29.171

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MISC

  • 海域水深と変位制約を考慮した波力発電装置の発電性能評価—Evaluations of Power Generation Performance Considering Finite Depth Effect and Displacement Constraints for Wave Energy Converters

    梅田 隼, 谷口 友基

    日本船舶海洋工学会講演会論文集 Conference proceedings, the Japan Society of Naval Architects and Ocean Engineers   ( 36 )   585 - 589   2023.06( ISSN:2185-1840

  • EXPERIMENTAL VALIDATION OF NONLINEAR MODEL PREDICTIVE CONTROL FOR FLOATING POINT ABSORBER TYPE WAVE ENERGY CONVERTER WITH LINEAR GENERATOR

    Taniguchi, T., Umeda, J., Nimura, T., Fujiwara, T.

    Grand Renewable Energy 2022 International Conference   2022.12

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    Authorship:Lead author  

  • Advantage of Motion Estimation of Point Absorber Type Wave Energy Converter

    Jun Umeda, Tomoki Taniguchi, Kaiyu Lao, Takafumi Koseki, Toshifumi Fujiwara

    ( 35 )   505 - 517   2022.11

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  • 高性能航行型AUVの開発

    岡本 章裕, 谷口 友基, 佐藤 匠, 平尾 春華, 稲葉 祥梧, 梅田 隼

    水路 : 日本水路協会機関誌 : quarterly journal / 日本水路協会 [編]   ( 198 )   13 - 18   2021.07( ISSN:0287-4660

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  • Real-Time Optimal Control of Point Absorber Type Wave Energy Converter with Onshore Bench Test System

    Taniguchi, T, Fujiwara, T, Umeda, J, Nimura, T

    Papers of National Maritime Research Institute   20 ( 3 )   2020( ISSN:2188-6598

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    Authorship:Lead author   Publishing type:Internal/External technical report, pre-print, etc.  

    J-GLOBAL

  • Underwater Cruise Simulation of an Autonomous Underwater Vehicle Using Non-linear Model Predictive Control

    Miyazawa, K, Taniguchi, T, Umeda, J, Arima, M

    Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers   ( 30 )   2020( ISSN:2185-1840

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    Publishing type:Research paper, summary (national, other academic conference)  

    J-GLOBAL

  • Scale Factor of a Linear Generator on Wave Energy Converters

    Umeda, J., Taniguchi, T., Fujiwara, T.

    Conference Proceedings of the Japan Society of Naval Architects and Ocean Engineers, (29), 2019   ( 29 )   2019( ISSN:2185-1840

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Industrial Property Rights

  • WAVE POWER GENERATION SYSTEM

    Inoue, S., Taniguchi, T., Fujiwara, T., Umeda, J.

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    property_type:Patent 

    Application no:特願2018-18565 

    Announcement no:特開2019-135391 

    Patent/Registration no:特許7029796 

  • REAL TIME CONTROL METHOD OF WAVE FORCE POWER GENERATOR AND WAVE FORCE POWER GENERATION SYSTEM

    Fujiwara, T., Taniguchi, T.

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    property_type:Patent 

    Application no:特願2019-025942 

    Announcement no:特開2020-133460