{"586359":{"#nid":"586359","#data":{"type":"event","title":"IRIM Robotics Seminar\u2013Ross Hatton","body":[{"value":"\u003Cp\u003EOregon State\u0026rsquo;s Ross Hatton presents \u0026ldquo;Snakes \u0026amp; Spiders, Robots \u0026amp; Geometry\u0026rdquo; as part of the IRIM Robotics Seminar Series.\u0026nbsp;The event will be held in the Marcus Nanotechnology Building, Rooms 1116-1118, from 12-1 p.m. and is open to the public.\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EAbstract\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003ELocomotion and perception are common threads between robotics and biology. Understanding these phenomena at a mechanical level involves nonlinear dynamics and the\u0026nbsp;coordination of many degrees of freedom. In this talk, I will discuss geometric approaches to organizing this information in two problem domains: 1) Undulatory locomotion of snakes and\u0026nbsp;swimmers; and 2) vibration propagation in spider webs.\u003C\/p\u003E\r\n\r\n\u003Cp\u003EIn the first section, I will discuss how differential geometry and Lie Group Theory provide insight into the locomotion of undulating systems through a vocabulary of lengths, areas, and\u0026nbsp;curvatures. In particular, a tool called the Lie Bracket\u0026nbsp;combines these geometric concepts to describe the effects of cyclic changes in the locomotor\u0026rsquo;s shape, such as the gaits used\u0026nbsp;by swimming or crawling systems. Building on these results, I will demonstrate that the geometric techniques are useful beyond the \u0026ldquo;clean\u0026rdquo; ideal systems on which they have\u0026nbsp;traditionally been developed, and can provide insight into the motion of systems with considerably more complex dynamics, such as locomotors in granular media.\u003C\/p\u003E\r\n\r\n\u003Cp\u003EIn the second section, I will turn my attention to vibration propagation through spiders\u0026rsquo; webs. Due to poor eyesight, many spiders rely on web vibrations for situational awareness.\u0026nbsp;Web-borne vibrations are used to determine the location of prey, predators, and potential mates. The influence of web geometry and composition on web vibrations is important for\u0026nbsp;understanding spider\u0026rsquo;s behavior and ecology. Past studies on web vibrations have experimentally measured the frequency response of web geometries by removing threads from\u0026nbsp;existing webs. The full influence of web structure and tension distribution on vibration transmission; however, has not been addressed in prior work. We have constructed physical\u0026nbsp;artificial webs and computer models to better understand the effect of web structure on vibration transmission. These models provide insight into the propagation of vibrations through\u0026nbsp;the webs, the frequency response of the bare web, and the influence of the spider\u0026rsquo;s mass and stiffness on the vibration transmission patterns.\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EBio\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003ERoss L. Hatton is an assistant professor of Robotics and Mechanical Engineering at Oregon State University, where he directs the\u0026nbsp;Laboratory for Robotics and Applied Mechanics\u0026nbsp;(LRAM). He received his Ph.D. and M.S. degrees from Carnegie Mellon University and an SB from the Massachusetts Institute of Technology. His research\u0026nbsp;focuses on understanding the fundamental mechanics of locomotion and sensory perception, making advances in mathematical theory accessible to an engineering audience, and on\u0026nbsp;finding abstractions that facilitate human control of unconventional locomotors. Hatton\u0026rsquo;s research group also works with local industry to transfer modern developments in robotics from the lab\u0026nbsp;to the factory or into commercial production. Hatton is a 2017 recipient of an NSF CAREER Award.\u003C\/p\u003E\r\n","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":[{"value":"\u003Cp\u003EOregon State\u0026rsquo;s Ross Hatton presents \u0026ldquo;Snakes \u0026amp; Spiders, Robots \u0026amp; Geometry\u0026rdquo; as part of the IRIM Robotics Seminar Series.\u0026nbsp;The event will be held in the Marcus Nanotechnology Building, Rooms 1116-1118, from 12-1 p.m. and is open to the public.\u003C\/p\u003E\r\n","format":"limited_html"}],"field_summary_sentence":[{"value":"Ross Hatton presents a seminar as part of the IRIM Robotics Seminar Series."}],"uid":"27255","created_gmt":"2017-01-23 20:59:55","changed_gmt":"2017-04-13 21:13:11","author":"Josie Giles","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2017-04-12T13:00:00-04:00","event_time_end":"2017-04-12T14:00:00-04:00","event_time_end_last":"2017-04-12T14:00:00-04:00","gmt_time_start":"2017-04-12 17:00:00","gmt_time_end":"2017-04-12 18:00:00","gmt_time_end_last":"2017-04-12 18:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"hg_media":{"586361":{"id":"586361","type":"image","title":"Ross Hatton","body":null,"created":"1485205314","gmt_created":"2017-01-23 21:01:54","changed":"1485205314","gmt_changed":"2017-01-23 21:01:54","alt":"","file":{"fid":"223477","name":"ross-hatton.jpg","image_path":"\/sites\/default\/files\/images\/ross-hatton.jpg","image_full_path":"http:\/\/www.tlwarc.hg.gatech.edu\/\/sites\/default\/files\/images\/ross-hatton.jpg","mime":"image\/jpeg","size":418910,"path_740":"http:\/\/www.tlwarc.hg.gatech.edu\/sites\/default\/files\/styles\/740xx_scale\/public\/images\/ross-hatton.jpg?itok=hs0tLKdD"}}},"media_ids":["586361"],"related_links":[{"url":"http:\/\/mime.oregonstate.edu\/people\/hatton","title":"Ross Hatton"},{"url":"http:\/\/robotics.gatech.edu\/seminars","title":"Robotics Seminar Series"}],"groups":[{"id":"142761","name":"IRIM"}],"categories":[],"keywords":[{"id":"1808","name":"graduate students"},{"id":"81491","name":"Institute for Robotics and Intelligent Machines (IRIM)"},{"id":"667","name":"robotics"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1795","name":"Seminar\/Lecture\/Colloquium"}],"invited_audience":[{"id":"78761","name":"Faculty\/Staff"},{"id":"78771","name":"Public"},{"id":"78751","name":"Undergraduate students"},{"id":"174045","name":"Graduate students"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[{"value":"\u003Cp\u003EJosie Giles\u003Cbr \/\u003E\r\nIRIM Marketing Communications Mgr.\u003Cbr \/\u003E\r\n\u003Ca href=\u0022mailto:josie@gatech.edu\u0022\u003Ejosie@gatech.edu\u003C\/a\u003E\u003C\/p\u003E\r\n","format":"limited_html"}],"email":[],"slides":[],"orientation":[],"userdata":""}}}