Volume 10: 44th Mechanisms and Robotics Conference (MR)最新文献

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Identification of Non-Transversal Bifurcations of Linkages 连杆机构非横向分岔的辨识
Volume 10: 44th Mechanisms and Robotics Conference (MR) Pub Date : 2020-08-17 DOI: 10.1115/detc2020-22301
A. Müller, P. C. López-Custodio, J. Dai
{"title":"Identification of Non-Transversal Bifurcations of Linkages","authors":"A. Müller, P. C. López-Custodio, J. Dai","doi":"10.1115/detc2020-22301","DOIUrl":"https://doi.org/10.1115/detc2020-22301","url":null,"abstract":"\u0000 The local analysis is an established approach to the study of singularities and mobility of linkages. Key result of such analyses is a local picture of the finite motion through a configuration. This reveals the finite mobility at that point and the tangents to smooth motion curves. It does, however, not immediately allow to distinguish between motion branches that do not intersect transversally (which is a rather uncommon situation that has only recently been discussed in the literature). The mathematical framework for such a local analysis is the kinematic tangent cone. It is shown in this paper that the constructive definition of the kinematic tangent cone already involves all information necessary to separate different motion branches. A computational method is derived by amending the algorithmic framework reported in previous publications.","PeriodicalId":365283,"journal":{"name":"Volume 10: 44th Mechanisms and Robotics Conference (MR)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134092427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Design of a Large Workspace Passive Spherical Joint via Contact Edge Design 基于接触边设计的大工作空间被动球面关节设计
Volume 10: 44th Mechanisms and Robotics Conference (MR) Pub Date : 2020-08-17 DOI: 10.1115/detc2020-22753
Neil M. Bajaj, A. Dollar
{"title":"Design of a Large Workspace Passive Spherical Joint via Contact Edge Design","authors":"Neil M. Bajaj, A. Dollar","doi":"10.1115/detc2020-22753","DOIUrl":"https://doi.org/10.1115/detc2020-22753","url":null,"abstract":"\u0000 This paper presents the design of a compact ball and socket type spherical joint that makes use of passive elements to increase the range of motion to greater than a hemisphere with infinite roll capacity. We discuss the limitations of typical spherical joints due to simple geometric considerations, and how the addition of redundancy, passive elements, and multiple contacting surfaces of differing geometry can increase the workspace of these joints. We discuss the relationship between kinematics, mechanical conditions (e.g. friction and contact forces) under quasistatic motion, and geometry required to achieve the increased range of motion. Furthermore, we provide a metric for assessing the viability or benefit of a potential design. Finally, we validate one of our designs with a physical prototype and demonstrate its achievable range of motion.","PeriodicalId":365283,"journal":{"name":"Volume 10: 44th Mechanisms and Robotics Conference (MR)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132819700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Design and Analysis of a Wire-Driven Multifunctional Robot for Single Incision Laparoscopic Surgery 单切口腹腔镜手术用线驱动多功能机器人的设计与分析
Volume 10: 44th Mechanisms and Robotics Conference (MR) Pub Date : 2020-08-17 DOI: 10.1115/detc2020-22471
A. Chowdhury, Jinsai Cheng, M. Cullado, Tao Shen
{"title":"Design and Analysis of a Wire-Driven Multifunctional Robot for Single Incision Laparoscopic Surgery","authors":"A. Chowdhury, Jinsai Cheng, M. Cullado, Tao Shen","doi":"10.1115/detc2020-22471","DOIUrl":"https://doi.org/10.1115/detc2020-22471","url":null,"abstract":"\u0000 Single Incision Laparoscopic Surgery (SILS) is a fast-growing method in the field of MIS (Minimally Invasive Surgery) that has the potential to represent the future of laparoscopic surgeries. The major benefits of SILS results from a single incision which makes surgeries essentially scar-less, and it can reduce wound infection substantially as well as recuperation time. Many new researches are now focusing on developing cutting edge technologies to support SILS; however, the practical applications of SILS are constrained by a number of intricacies such as space limitation, absence of dexterous multitasking tools, lack of sufficient actuation force and poor visualization. Deployment and retraction of surgical tools or robots are done manually in the absence of a multitasking tool manipulator which increases the surgery time, risk of injury and surgeon’s fatigue. Our research focuses on designing a novel operative hardware (multitasking manipulator) to facilitate the SILS technique with automatic tool changing capability. A wire driven mechanism has been implemented in the design to minimize the damage to the electronic hardware during sterilization since the electronic actuation and sensing components are located remotely from the end-effector which requires heat or chemical sterilization before surgery. And a wire-driven articulated robotic arm has also been designed to support the manipulator. The details of the robotic design and analysis are conducted in the paper. The feasibility of this robotic method has been demonstrated by experiments.","PeriodicalId":365283,"journal":{"name":"Volume 10: 44th Mechanisms and Robotics Conference (MR)","volume":"25 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122180345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Optimum Design of an Archery Twin Round-Wheel Compound Bow 射箭双圆轮复合弓的优化设计
Volume 10: 44th Mechanisms and Robotics Conference (MR) Pub Date : 2020-08-17 DOI: 10.1115/detc2020-22473
Onur Denizhan, M. Chew
{"title":"Optimum Design of an Archery Twin Round-Wheel Compound Bow","authors":"Onur Denizhan, M. Chew","doi":"10.1115/detc2020-22473","DOIUrl":"https://doi.org/10.1115/detc2020-22473","url":null,"abstract":"\u0000 In this article, an optimization of a twin round-wheel compound bow is presented. Based on a previously published mathematical model of the kineto-elastic system, an objective function is introduced to maximize the stored potential energy in the compound bow limbs. The optimized design of the compound bow shows an increase in the potential energy stored for the same drawn distance. However, a slightly higher force is required and the initial position of string is slightly closer to the riser. Two different optimality criteria are also discussed.","PeriodicalId":365283,"journal":{"name":"Volume 10: 44th Mechanisms and Robotics Conference (MR)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128046808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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