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International Affairs Students Current Students Alumni Faculty/Staff Careers--> TOHOKU UNIVERSITYCREATING GLOBAL EXCELLENCE Search 日本語 Contact Tohoku University --> About Facts & Figures Facilities Organization Chart History President's Message Top Global University Project Designated National University Global Network Promotional Videos Academics Undergraduate Graduate Courses in English Exchange Programs Summer Programs Double Degree Programs Academic Calendar Syllabus Admissions Undergraduate Admissions Graduate Admissions Fees and Expenses Financial Aid Research Feature Highlights Research Releases University Research News Research Institutes Visitor Research Center Research Profiles Academic Research Staff Campus Life International Support Office IT Services Facilities Dining & Shops Campus Bus Clubs & Circles News University News Research--> Arts & Culture Health & Sports Campus & Community Press Release--> International Visit Alumni Careers Events Exhibits Music Special Event Lecture Alumni--> Map & Directions Campus Maps & Bus--> Facilities Map--> TOHOKUUNIVERSITY About Academics Admissions Research Campus Life News Events International Affairs Students Current Students Alumni Faculty/Staff Promotional Videos Subscribe to our Newsletter Map & Directions Contact Jobs & Vacancies Emergency Information Site Map 日本語 Close Home Research News Brittle Stars inspire new generation robots able to adapt to physical damage Research News Brittle Stars inspire new generation robots able to adapt to physical damage 2017-12-14 Researchers at Tohoku University and Hokkaido University have, for the first time, succeeded in developing a robot capable of immediately adapting to unexpected physical damage. This is a significant breakthrough as robots are increasingly expected to function in tough environments under hazardous conditions. Conventional robots tend to require a considerable amount of time (several tens of seconds) to adapt when they incur unexpected physical damage. To address this problem, researchers led by Professor Akio Ishiguro of the Research Institute of Electrical Communication at Tohoku University, focused on a brittle star - a primitive echinoderm with five flexible arms. Brittle stars lack a sophisticated central nervous system, yet are able to immediately adapt to an arbitrary loss of their arms and still move by coordinating the remaining arms. (a) Overview of a brittle star (left) and photographs of locomotion when it lost one of its arms (right). (b) Overview of the brittle star-like robot PENTABOT II (left) and photographs of locomotion when one of the arms was destroyed (right). The robot could keep moving by coordinating the remaining arms appropriately. Based on behavioral experiments involving brittle stars whose arms were amputated in various ways, the researchers proposed a simple decentralized control mechanism in which each arm kicks the ground only when it obtains an assistive reaction force. This mechanism was implemented in a brittle star-like robot to demonstrate that it can adapt to unexpected physical damage within a few seconds, like its biological model. Schematic of the proposed control scheme. First, each arm moves randomly to obtain a response from the environment. If the reaction force assists propulsion, the arm pushes itself against the ground, after which the arm lifts off from the ground and moves forward. When the reaction force impedes propulsion, no further action is generated. The researchers hope that this finding will help develop resilient robots that can work in inhospitable environments such as disaster areas. It also provides insights into the essential mechanism underlying resilient animal locomotion. Publication Details: Authors: Takeshi Kano, Eiki Sato, Tatsuya Ono, Hitoshi Aonuma, Yoshiya Matsuzaka and Akio Ishiguro Title: A Brittle Star-like Robot Capable of Immediately Adapting to Unexpected Physical Damage Journal: Royal Society Open Science DOI: 10.1098/rsos.171200 Press release in Japanese Contact: Akio Ishiguro Research Institute of Electrical Communication Email: [email protected] Website: http://www.cmplx.riec.tohoku.ac.jp Archives 2014&＃24180; 2015&＃24180; 2016&＃24180; 2017&＃24180; 2018&＃24180; 2019&＃24180; 2020&＃24180; 2021&＃24180; 2022&＃24180; 2023&＃24180; Page Top About Tohoku University Academics Admissions Research Campus Life News Events International Affairs Students Alumni Promotional Videos Subscribe to our Newsletter Map & Directions Contact Tohoku University Jobs & Vacancies Emergency Information Site Map Media Enquiries Parent & Family Support Public Facilities Contact Tohoku University