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Mechanics for turning of quadruped locomotion

Research Project

Project/Area Number 20K04390
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 20020:Robotics and intelligent system-related
Research InstitutionOkayama University of Science

Principal Investigator

Kinugasa Tetsuya  岡山理科大学, 工学部, 教授 (20321474)

Co-Investigator(Kenkyū-buntansha) 吉田 浩治  岡山理科大学, 工学部, 教授 (00254433)
林 良太  岡山理科大学, 工学部, 教授 (40288949)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords大型生物の旋回 / 四足生物の定常旋回 / 竜脚類の旋回運動解析 / 四足歩行 / 竜脚類 / 四足ロボット / 旋回行跡
Outline of Research at the Start

本研究は,竜脚類などの大型の四足生物がどのように旋回するのか?」という疑問に対し,自動車工学の旋回理論に基づいた考察をおこない,ロボットによって旋回動作を再現しその妥当性を評価する.
石垣らは大型竜脚類の旋回行跡の観察から,自動車における内輪差に似た現象を確認し,荷重の小さい前肢を主に使って旋回していたという仮説を提唱している.
本研究では,大型竜脚類とゾウの旋回行跡を操舵モデルに基づいて解析し仮説の妥当性を検証する.さらに,四足生物の動力学モデルおよびロボットを構築し,数値シミュレーションと実験をおこなうことで四足生物の旋回時の力学的特性について考察する.

Outline of Final Research Achievements

This research aims to address the question of how large quadrupedal vertebrates, such as sauropods, turn.
It aims to conduct an investigation based on the geometric turning theory of automotive engineering and evaluate its validity using robots. As a result of analyzing the turning trajectories of previously discovered large sauropods and collected data from elephants, the research findings indicate that sauropods turn with an inner track difference through front limb steering, while elephants turn with an outer track difference through hind limb steering. Additionally, the steering ratio tends to be inversely proportional to the load ratio. This is theoretically shown to be caused by each organism steering to minimize their inertia moment during turning. The validity of these findings was also verified through simulations.

Academic Significance and Societal Importance of the Research Achievements

本研究は,大型四足生物の旋回行跡に見られる軌道差が前肢と後肢の舵角の比によって幾何学的に決定されるという従来研究を掘り下げ,舵角の比は荷重の逆比として決定され,これは生物が慣性モーメントを最小にするように旋回した結果であることを示した.この結果は,従来あまり考察されていなかった四足生物の定常旋回メカニズムを明らかにするという意味で学術的意義がある.また,絶滅種である竜脚類の歩行メカニズムを明らかにしたという意味で重要な結果と考える.

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (8 results)

All 2023 2022

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (7 results) (of which Int'l Joint Research: 4 results)

  • [Journal Article] Various gait pattern generation and analysis of semi-passive quadruped walker with telescopic knee based on phase oscillator2023

    • Author(s)
      Miwa Shoichi、Kinugasa Tetsuya、Oba Kii、Ishihara Takumi、Zhang Jialun、Hayashi Ryota、Yoshida Koji
    • Journal Title

      Artificial Life and Robotics

      Volume: online Issue: 3 Pages: 1-7

    • DOI

      10.1007/s10015-023-00862-2

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Presentation] Interlocking mechanism in the hindlimb using a passive musculotendinous structure during the high walk of crocodilians: Validation of the effects of iliotibials as passive element using a robot2023

    • Author(s)
      Kazuki Ito, Koichi Osuka, Tetsuya Kinugasa, Sayaka Hida, Koji Yoshida, Ryota Hayashi
    • Organizer
      29th International Symposium on Artificial Life and Robotics AROB 29th 2024
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ワニ類後肢にみられる筋系の Y 字構造に基づいた立位姿勢維持機構とロボットによる実装2023

    • Author(s)
      伊東和輝(大阪大学),衣笠哲也,奥田ゆう,千葉謙太郎,檜田沙耶香,高崎竜司,林良太, 吉田浩治(岡山理科大学),大須賀公一(大阪大学)
    • Organizer
      第28回ロボティクスシンポジア
    • Related Report
      2022 Annual Research Report
  • [Presentation] 筋骨格系の受動的連動を利用したワニ類後肢ロボットによる立位姿勢の実現2023

    • Author(s)
      伊東 和輝(大阪大学), 衣笠 哲也(岡山理科大学), 檜田 沙耶香(岡山理科大学), 吉田 浩治(岡山理科大学), 林 良太(岡山理科大学), 大須賀 公一(大阪大学)
    • Organizer
      第35回自律分散システム・シンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] 走鳥類の足根間関節に見られるカム様メカニズムとその設計法の検討2023

    • Author(s)
      檜田 沙耶香(岡山理科大学), 伊東 和輝(大阪大学), 衣笠 哲也(岡山理科大学), 吉田 浩治(岡山理科大学), 林 良太(岡山理科大学)
    • Organizer
      第35回自律分散システム・シンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] Exhibiting Various Gait Patterns in Quadrupedal Locomotion via Passive Inter- and Intralimb Coordination2022

    • Author(s)
      Kii Oba, Shoichi Miwa, Tetsuya Kinugasa, Takumi Ishihara, Jialun Zhang, Koji Yoshida, Ryota Hayashi
    • Organizer
      28th International Symposium on Artificial Life and Robotics AROB 28th 2023(国際学会)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] INTERLOCKING MECHANISMS OF CROCODILIAN HINDLIMB JOINTS USING A PASSIVE MUSCULOTENDINOUS STRUCTURE DURING THE HIGH WALK2022

    • Author(s)
      Ito, Kazuki, Kinugasa, Tetsuya, Chiba, Kentaro, Okuda, Yu, Takasaki, Ryuji, Hida, Sayaka, Yoshida, Koji, Hayashi, Ryota, Osuka, Koichi
    • Organizer
      The Society of Vertebrate Paleontology 82nd annual meeting 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Exhibiting Various Gait Patterns in Quadrupedal Locomotion via Passive Inter- and Intralimb Coordination2022

    • Author(s)
      Kii Oba, Shoichi Miwa, Tetsuya Kinugasa, Takumi Ishihara, Jialun Zhang, Koji Yoshida, Ryota Hayashi
    • Organizer
      28th International Symposium on Artificial Life and Robotics AROB 28th 2023
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research

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Published: 2020-04-28   Modified: 2024-01-30  

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