Denim-fabric-polishing robot size optimization based on global spatial dexterity

<p>This paper presents a novel method to make denim-fabric-polishing robots perform their primary task flexibly and efficiently within a limited workspace. Link lengths are optimized based on an adaptive fireworks algorithm to improve the comprehensive dexterity index. A forward kinematics ana...

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Main Authors: W. Wang, Q. Tao, X. Wang, Y. Cao, C. Chen
Format: Article
Language:English
Published: Copernicus Publications 2021-06-01
Series:Mechanical Sciences
Online Access:https://ms.copernicus.org/articles/12/649/2021/ms-12-649-2021.pdf
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author W. Wang
Q. Tao
X. Wang
Y. Cao
C. Chen
author_facet W. Wang
Q. Tao
X. Wang
Y. Cao
C. Chen
author_sort W. Wang
collection DOAJ
description <p>This paper presents a novel method to make denim-fabric-polishing robots perform their primary task flexibly and efficiently within a limited workspace. Link lengths are optimized based on an adaptive fireworks algorithm to improve the comprehensive dexterity index. A forward kinematics analysis of the denim-fabric-polishing robot is conducted via the D–H method; the workspace is analyzed according to the needs at hand to determine the range of motion of each joint. To solve the movement condition number of the Jacobian matrix, the concept of low-condition-number probability is established, and a comprehensive dexterity indicator is constructed. The influence of the robot's size on the condition number and comprehensive dexterity index is determined. Finally, the adaptive fireworks algorithm is used to establish the objective optimization function by integrating the dexterity index and other performance indicators. The optimization results show that when the comprehensive dexterity index is taken as the optimization objective, the dexterity comprehensive index and other performance indices of the robot are the lowest; that is, the robot is more flexible. Compared with the traditional genetic algorithm and particle swarm algorithm, the adaptive fireworks algorithm proposed in this paper has better solving speed and solving precision. The optimized workspace of the robot meets the requirements of the polishing task. The design also yields a sufficiently flexible, efficient, and effective robot.</p>
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spelling doaj.art-fa122b07efb44d179b04f5b1f7ec3b422022-12-21T22:48:43ZengCopernicus PublicationsMechanical Sciences2191-91512191-916X2021-06-011264966010.5194/ms-12-649-2021Denim-fabric-polishing robot size optimization based on global spatial dexterityW. WangQ. TaoX. WangY. CaoC. Chen<p>This paper presents a novel method to make denim-fabric-polishing robots perform their primary task flexibly and efficiently within a limited workspace. Link lengths are optimized based on an adaptive fireworks algorithm to improve the comprehensive dexterity index. A forward kinematics analysis of the denim-fabric-polishing robot is conducted via the D–H method; the workspace is analyzed according to the needs at hand to determine the range of motion of each joint. To solve the movement condition number of the Jacobian matrix, the concept of low-condition-number probability is established, and a comprehensive dexterity indicator is constructed. The influence of the robot's size on the condition number and comprehensive dexterity index is determined. Finally, the adaptive fireworks algorithm is used to establish the objective optimization function by integrating the dexterity index and other performance indicators. The optimization results show that when the comprehensive dexterity index is taken as the optimization objective, the dexterity comprehensive index and other performance indices of the robot are the lowest; that is, the robot is more flexible. Compared with the traditional genetic algorithm and particle swarm algorithm, the adaptive fireworks algorithm proposed in this paper has better solving speed and solving precision. The optimized workspace of the robot meets the requirements of the polishing task. The design also yields a sufficiently flexible, efficient, and effective robot.</p>https://ms.copernicus.org/articles/12/649/2021/ms-12-649-2021.pdf
spellingShingle W. Wang
Q. Tao
X. Wang
Y. Cao
C. Chen
Denim-fabric-polishing robot size optimization based on global spatial dexterity
Mechanical Sciences
title Denim-fabric-polishing robot size optimization based on global spatial dexterity
title_full Denim-fabric-polishing robot size optimization based on global spatial dexterity
title_fullStr Denim-fabric-polishing robot size optimization based on global spatial dexterity
title_full_unstemmed Denim-fabric-polishing robot size optimization based on global spatial dexterity
title_short Denim-fabric-polishing robot size optimization based on global spatial dexterity
title_sort denim fabric polishing robot size optimization based on global spatial dexterity
url https://ms.copernicus.org/articles/12/649/2021/ms-12-649-2021.pdf
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AT xwang denimfabricpolishingrobotsizeoptimizationbasedonglobalspatialdexterity
AT ycao denimfabricpolishingrobotsizeoptimizationbasedonglobalspatialdexterity
AT cchen denimfabricpolishingrobotsizeoptimizationbasedonglobalspatialdexterity