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Mechanically Compliant Growing Robotic Systems for Manipulating Payloads
Mechanically Compliant Growing Robotic Systems for Manipulating Payloads
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202104849
- ISBN
- 9798288816710
- DDC
- 300
- 서명/저자
- Mechanically Compliant Growing Robotic Systems for Manipulating Payloads
- 발행사항
- [Sl] : Stanford University, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 137 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-02, Section: B.
- 주기사항
- Advisor: Okamura, Allison.
- 학위논문주기
- Thesis (Ph.D.)--Stanford University, 2025.
- 초록/해제
- 요약Soft growing robot designs unlock new modes of motion that enable exploration of unstructured, unknown, and difficult-to-reach environments while leveraging their mechanical compliance to access novel manipulation capabilities. One realization is soft growing inflated-beam robots, commonly referred to as vine robots, which achieve growth by pressure-driven eversion of the robot's compliant tube-shaped body from its tip. The robot body's compliance allows for it to be compactly stored and everted to achieve high extension ratios, navigate high curvatures, and fit into tight spaces. While the deployment of these systems for inspection and exploration has garnered research attention, there is little known about how these systems can be used for material handling and transfer. Because they are built using lightweight and compliant materials, soft robots typically apply small forces. Here, we consider designs that exploit loading configurations for which these compliant materials can deliver large forces. This dissertation expands the utility of this class of soft growing robot by introducing novel deployment approaches and design principles that leverage its intrinsic properties for the purposes of securing, harnessing, and transferring significant payloads. This work also introduces a novel mechanically compliant growing manipulator inspired by soft growing inflated beam robots capable of considerable payloads due to one of its intrinsic properties: curvature induced rigidity. A benefit of soft growing inflated beam robots commonly discussed in literature is their ability to apply pulling forces due to the inextensibility of their membrane material. However, their growth mechanism involving the addition and removal of material at their tip during growth and retraction makes it difficult to secure their distal ends robustly to objects of interest without hindering their ability to grow. Prior works have utilized tip-mount and internal reeling mechanisms to enable carrying of payloads, but these mechanisms compromise the navigational abilities of the robots. We present a new method for securing a vine robot to objects or its environment that exploits their unique eversion-based growth mechanism and flexibility, while keeping the tip of the robot free of encumbrance. Our implementation is a tip-clutching winch, into which soft growing inflated beam robots can insert themselves and anchor to via powerful overlapping belt friction. The device enables passive, high-strength, and reversible fastening, and can easily release the soft growing inflated beam robot. This approach enables carrying of loads an order of magnitude greater than previously reported, as well as novel material transport and locomotion capabilities. Employing the tip-clutching winch as a tool for enhancing the payload-securing ability of a soft growing inflated beam robot, we introduce how these robots can be used in a novel class of grasping mechanisms we call Loop Closure Grasping to achieve strong, gentle and versatile grasps. A grasp-ing mechanism must both create a stable grasp and subsequently hold that grasp in a manner that permits safe and effective object manipulation. Previous grasping mechanisms have attempted to meet different functional requirements by employing either an open-loop or a closed-loop topology, despite neither meeting all distinct design needs. This new class of grasping addresses the different functional requirements of the different stages of the grasping process through topological transformations between open-loop and closed-loop morphologies. We formalize open- and closed-loop mechanisms in the context of grasping, elucidate their fundamental differences and unique benefits, present the loop closure grasping method, and propose an architecture and principles for loop clo-sure grasping system design. We implement this loop closure grasping paradigm using soft growing inflated beams, winches, and clamps to navigate open-loop mechanisms around an object into the desired closed-loop configurations, eventually fastening the beams' tips to close the loop. We show that loop closure enables simultaneously strong, gentle, and versatile grasping involving historically challenging objects, environments, and configurations. We further elucidate potential applications of soft growing inflated beam robots, with a novel method of mechanically programming the cross-section of soft everting robotic structures using flexible strips that constrain radial expansion between points along the outer membrane. Our method enables simultaneously wide and thin profiles while maintaining the full multi-axis flexibility of traditional slings. We used this method to prototype a soft growing robotic sling system, and demonstrate its use for assisting a single caregiver in bed-to-chair patient transfer. We also develop and validate a model relating the geometric design specifications to the fabrication parameters, and experimentally characterize their effects on growth rate. Lastly, inspired by the growing robots discussed thus far, we develop a novel lightweight, growing manipulator, known as TapeBot, equipped with small stowed configuration, high extension ratios, and multiple degrees of freedom that can manipulate light and medium-weight payloads via curvature-induced rigidity. Growth is achieved using a pair of spooling tape springs as its backbone which are pinched together to form a reconfigurable revolute joint using a nodal structure that can travel along the tapes We present the design, implementation, kinematic models, and stiffness behavior of its tape spring backbone and revolute joint, quasistatic performance of this manipulator and, design considerations for its pinching mechanism.
- 일반주제명
- Load
- 일반주제명
- Friction
- 일반주제명
- Robots
- 일반주제명
- Kinematics
- 일반주제명
- Pressure distribution
- 일반주제명
- Robotics
- 일반주제명
- Computer engineering
- 키워드
- Robot designs
- 키워드
- Soft robots
- 기타저자
- Stanford University.
- 기본자료저록
- Dissertations Abstracts International. 87-02B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520260202104849
■006m o d
■007cr#unu||||||||
■020 ▼a9798288816710
■035 ▼a(MiAaPQ)AAI32200946
■035 ▼a(MiAaPQ)Stanfordgh127qw7656
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a300
■1001 ▼aOsele, Obumneme Godson.
■24510▼aMechanically Compliant Growing Robotic Systems for Manipulating Payloads
■260 ▼a[Sl]▼bStanford University▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a137 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-02, Section: B.
■500 ▼aAdvisor: Okamura, Allison.
■5021 ▼aThesis (Ph.D.)--Stanford University, 2025.
■520 ▼aSoft growing robot designs unlock new modes of motion that enable exploration of unstructured, unknown, and difficult-to-reach environments while leveraging their mechanical compliance to access novel manipulation capabilities. One realization is soft growing inflated-beam robots, commonly referred to as vine robots, which achieve growth by pressure-driven eversion of the robot's compliant tube-shaped body from its tip. The robot body's compliance allows for it to be compactly stored and everted to achieve high extension ratios, navigate high curvatures, and fit into tight spaces. While the deployment of these systems for inspection and exploration has garnered research attention, there is little known about how these systems can be used for material handling and transfer. Because they are built using lightweight and compliant materials, soft robots typically apply small forces. Here, we consider designs that exploit loading configurations for which these compliant materials can deliver large forces. This dissertation expands the utility of this class of soft growing robot by introducing novel deployment approaches and design principles that leverage its intrinsic properties for the purposes of securing, harnessing, and transferring significant payloads. This work also introduces a novel mechanically compliant growing manipulator inspired by soft growing inflated beam robots capable of considerable payloads due to one of its intrinsic properties: curvature induced rigidity. A benefit of soft growing inflated beam robots commonly discussed in literature is their ability to apply pulling forces due to the inextensibility of their membrane material. However, their growth mechanism involving the addition and removal of material at their tip during growth and retraction makes it difficult to secure their distal ends robustly to objects of interest without hindering their ability to grow. Prior works have utilized tip-mount and internal reeling mechanisms to enable carrying of payloads, but these mechanisms compromise the navigational abilities of the robots. We present a new method for securing a vine robot to objects or its environment that exploits their unique eversion-based growth mechanism and flexibility, while keeping the tip of the robot free of encumbrance. Our implementation is a tip-clutching winch, into which soft growing inflated beam robots can insert themselves and anchor to via powerful overlapping belt friction. The device enables passive, high-strength, and reversible fastening, and can easily release the soft growing inflated beam robot. This approach enables carrying of loads an order of magnitude greater than previously reported, as well as novel material transport and locomotion capabilities. Employing the tip-clutching winch as a tool for enhancing the payload-securing ability of a soft growing inflated beam robot, we introduce how these robots can be used in a novel class of grasping mechanisms we call Loop Closure Grasping to achieve strong, gentle and versatile grasps. A grasp-ing mechanism must both create a stable grasp and subsequently hold that grasp in a manner that permits safe and effective object manipulation. Previous grasping mechanisms have attempted to meet different functional requirements by employing either an open-loop or a closed-loop topology, despite neither meeting all distinct design needs. This new class of grasping addresses the different functional requirements of the different stages of the grasping process through topological transformations between open-loop and closed-loop morphologies. We formalize open- and closed-loop mechanisms in the context of grasping, elucidate their fundamental differences and unique benefits, present the loop closure grasping method, and propose an architecture and principles for loop clo-sure grasping system design. We implement this loop closure grasping paradigm using soft growing inflated beams, winches, and clamps to navigate open-loop mechanisms around an object into the desired closed-loop configurations, eventually fastening the beams' tips to close the loop. We show that loop closure enables simultaneously strong, gentle, and versatile grasping involving historically challenging objects, environments, and configurations. We further elucidate potential applications of soft growing inflated beam robots, with a novel method of mechanically programming the cross-section of soft everting robotic structures using flexible strips that constrain radial expansion between points along the outer membrane. Our method enables simultaneously wide and thin profiles while maintaining the full multi-axis flexibility of traditional slings. We used this method to prototype a soft growing robotic sling system, and demonstrate its use for assisting a single caregiver in bed-to-chair patient transfer. We also develop and validate a model relating the geometric design specifications to the fabrication parameters, and experimentally characterize their effects on growth rate. Lastly, inspired by the growing robots discussed thus far, we develop a novel lightweight, growing manipulator, known as TapeBot, equipped with small stowed configuration, high extension ratios, and multiple degrees of freedom that can manipulate light and medium-weight payloads via curvature-induced rigidity. Growth is achieved using a pair of spooling tape springs as its backbone which are pinched together to form a reconfigurable revolute joint using a nodal structure that can travel along the tapes We present the design, implementation, kinematic models, and stiffness behavior of its tape spring backbone and revolute joint, quasistatic performance of this manipulator and, design considerations for its pinching mechanism.
■590 ▼aSchool code: 0212.
■650 4▼aLoad
■650 4▼aFriction
■650 4▼aRobots
■650 4▼aKinematics
■650 4▼aPressure distribution
■650 4▼aRobotics
■650 4▼aComputer engineering
■653 ▼aRobot designs
■653 ▼aSoft robots
■653 ▼aQuasistatic performance
■690 ▼a0771
■690 ▼a0464
■71020▼aStanford University.
■7730 ▼tDissertations Abstracts International▼g87-02B.
■790 ▼a0212
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17359209▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


