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Singular Configuration Analysis and Singularity Avoidance with Application in an Intelligent Robotic Manipulator

Recently, robotic sensor systems have gained more attention annually in complex system sense strategies. The robotic sensors sense the information from itself and the environment, and fuse information for the use of perception, decision, planning, and control. As an important supplement to tradition...

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Detalles Bibliográficos
Autores principales: Wang, Helin, Zhou, Ziqiang, Zhong, Xianyou, Chen, Qijun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8838707/
https://www.ncbi.nlm.nih.gov/pubmed/35161983
http://dx.doi.org/10.3390/s22031239
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author Wang, Helin
Zhou, Ziqiang
Zhong, Xianyou
Chen, Qijun
author_facet Wang, Helin
Zhou, Ziqiang
Zhong, Xianyou
Chen, Qijun
author_sort Wang, Helin
collection PubMed
description Recently, robotic sensor systems have gained more attention annually in complex system sense strategies. The robotic sensors sense the information from itself and the environment, and fuse information for the use of perception, decision, planning, and control. As an important supplement to traditional industrial robots, co-bots (short for co-working robots) play an increasingly vital role in helping small and medium-sized enterprises realize intelligent manufacturing. They have high flexibility and safety so that they can assist humans to complete highly repetitive and high-precision work. In order to maintain robot safe operation in the increasing complex working environment and human–computer intelligent interactive control, this paper is concerned with the problem of applicant accuracy analysis and singularity avoidance for co-bots. Based on the dynamic model with load and torque sensors, which is used to detect the external force at the end of the robot, this paper systematically analyzes the causes of singularity phenomenon in the robot motion control. The inverse solution is obtained by analytical method and numerical method, respectively. In order to ensure the smooth and safe operation in the whole workspace, it is necessary for a robot to avoid singularity. Singularity avoidance schemes are utilized for different control tasks, including point-to-point control and continuous path control. Corresponding simulation experiments are designed to verify the effectiveness of different evasion schemes, in which the advantages and disadvantages are compared and analyzed.
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spelling pubmed-88387072022-02-13 Singular Configuration Analysis and Singularity Avoidance with Application in an Intelligent Robotic Manipulator Wang, Helin Zhou, Ziqiang Zhong, Xianyou Chen, Qijun Sensors (Basel) Article Recently, robotic sensor systems have gained more attention annually in complex system sense strategies. The robotic sensors sense the information from itself and the environment, and fuse information for the use of perception, decision, planning, and control. As an important supplement to traditional industrial robots, co-bots (short for co-working robots) play an increasingly vital role in helping small and medium-sized enterprises realize intelligent manufacturing. They have high flexibility and safety so that they can assist humans to complete highly repetitive and high-precision work. In order to maintain robot safe operation in the increasing complex working environment and human–computer intelligent interactive control, this paper is concerned with the problem of applicant accuracy analysis and singularity avoidance for co-bots. Based on the dynamic model with load and torque sensors, which is used to detect the external force at the end of the robot, this paper systematically analyzes the causes of singularity phenomenon in the robot motion control. The inverse solution is obtained by analytical method and numerical method, respectively. In order to ensure the smooth and safe operation in the whole workspace, it is necessary for a robot to avoid singularity. Singularity avoidance schemes are utilized for different control tasks, including point-to-point control and continuous path control. Corresponding simulation experiments are designed to verify the effectiveness of different evasion schemes, in which the advantages and disadvantages are compared and analyzed. MDPI 2022-02-06 /pmc/articles/PMC8838707/ /pubmed/35161983 http://dx.doi.org/10.3390/s22031239 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Wang, Helin
Zhou, Ziqiang
Zhong, Xianyou
Chen, Qijun
Singular Configuration Analysis and Singularity Avoidance with Application in an Intelligent Robotic Manipulator
title Singular Configuration Analysis and Singularity Avoidance with Application in an Intelligent Robotic Manipulator
title_full Singular Configuration Analysis and Singularity Avoidance with Application in an Intelligent Robotic Manipulator
title_fullStr Singular Configuration Analysis and Singularity Avoidance with Application in an Intelligent Robotic Manipulator
title_full_unstemmed Singular Configuration Analysis and Singularity Avoidance with Application in an Intelligent Robotic Manipulator
title_short Singular Configuration Analysis and Singularity Avoidance with Application in an Intelligent Robotic Manipulator
title_sort singular configuration analysis and singularity avoidance with application in an intelligent robotic manipulator
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8838707/
https://www.ncbi.nlm.nih.gov/pubmed/35161983
http://dx.doi.org/10.3390/s22031239
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