Subspace Projection-Based Collision Detection for Physical Interaction Tasks of Collaborative Robots

In recent years, various collision detection methods have been proposed for safe human–robot collaboration; these methods are usually model-based. However, most tasks conducted by collaborative robots involve a physical robot–environment interaction, and it is very difficult to design a model of suc...

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Published inInternational journal of precision engineering and manufacturing Vol. 20; no. 7; pp. 1119 - 1126
Main Authors Lee, Sang-Duck, Ahn, Kuk-Hyun, Song, Jae-Bok
Format Journal Article
LanguageEnglish
Published Seoul Korean Society for Precision Engineering 01.07.2019
Springer Nature B.V
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ISSN2234-7593
2005-4602
DOI10.1007/s12541-019-00130-z

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Abstract In recent years, various collision detection methods have been proposed for safe human–robot collaboration; these methods are usually model-based. However, most tasks conducted by collaborative robots involve a physical robot–environment interaction, and it is very difficult to design a model of such interaction that varies depending on the external environment. Therefore, this study proposes a method for detecting collision between a human and a robot while the robot executes a task involving physical interaction with an unknown environment. To this end, a collision detection index is suggested based on the subspace projection technique. The proposed collision detection scheme is verified experimentally using a 7-DOF robot arm, and the experimental results show that collisions can be detected reliably by the proposed method.
AbstractList In recent years, various collision detection methods have been proposed for safe human–robot collaboration; these methods are usually model-based. However, most tasks conducted by collaborative robots involve a physical robot–environment interaction, and it is very difficult to design a model of such interaction that varies depending on the external environment. Therefore, this study proposes a method for detecting collision between a human and a robot while the robot executes a task involving physical interaction with an unknown environment. To this end, a collision detection index is suggested based on the subspace projection technique. The proposed collision detection scheme is verified experimentally using a 7-DOF robot arm, and the experimental results show that collisions can be detected reliably by the proposed method.
Author Song, Jae-Bok
Lee, Sang-Duck
Ahn, Kuk-Hyun
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Keywords Collision safety
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Human–robot collaboration
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Snippet In recent years, various collision detection methods have been proposed for safe human–robot collaboration; these methods are usually model-based. However,...
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SubjectTerms Collaboration
Engineering
Industrial and Production Engineering
Materials Science
Regular Paper
Robot arms
Robots
Unknown environments
Title Subspace Projection-Based Collision Detection for Physical Interaction Tasks of Collaborative Robots
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