Force-controlled pose optimization and trajectory planning for chained Stewart platforms
Introduction: We study optimization methods for poses and movements of chained Stewart platforms (SPs) that we call an “Assembler” Robot. These chained SPs are parallel mechanisms that are stronger, stiffer, and more precise, on average, than their serial counterparts at the cost of a smaller range...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-11-01
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| Series: | Frontiers in Mechanical Engineering |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fmech.2023.1225828/full |
| _version_ | 1797464429863895040 |
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| author | Benjamin Beach William Chapin Samantha Chapin Robert Hildebrand Erik Komendera |
| author_facet | Benjamin Beach William Chapin Samantha Chapin Robert Hildebrand Erik Komendera |
| author_sort | Benjamin Beach |
| collection | DOAJ |
| description | Introduction: We study optimization methods for poses and movements of chained Stewart platforms (SPs) that we call an “Assembler” Robot. These chained SPs are parallel mechanisms that are stronger, stiffer, and more precise, on average, than their serial counterparts at the cost of a smaller range of motion. By linking these units in a series, their individual limitations are overcome while maintaining truss-like rigidity. This opens up potential uses in various applications, especially in complex space missions in conjunction with other robots.Methods: To enhance the efficiency and longevity of the Assembler Robot, we developed algorithms and optimization models. The main goal of these methodologies is to efficiently decide on favorable positions and movements that reduce force loads on the robot, consequently minimizing wear.Results: The optimized maneuvers of the interior plates of the Assembler result in more evenly distributed load forces through the legs of each constituent SP. This optimization allows for a larger workspace and a greater overall payload capacity. Our computations primarily focus on assemblers with four chained SPs.Discussion: Although our study primarily revolves around assemblers with four chained SPs, our methods are versatile and can be applied to an arbitrary number of SPs. Furthermore, these methodologies can be extended to general over-actuated truss-like robot architectures. The Assembler, designed to function collaboratively with several other robots, holds promise for a variety of space missions. |
| first_indexed | 2024-03-09T18:08:02Z |
| format | Article |
| id | doaj.art-80410c85f3d4487ba3c9e6b1d88572a5 |
| institution | Directory Open Access Journal |
| issn | 2297-3079 |
| language | English |
| last_indexed | 2024-03-09T18:08:02Z |
| publishDate | 2023-11-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Mechanical Engineering |
| spelling | doaj.art-80410c85f3d4487ba3c9e6b1d88572a52023-11-24T09:20:46ZengFrontiers Media S.A.Frontiers in Mechanical Engineering2297-30792023-11-01910.3389/fmech.2023.12258281225828Force-controlled pose optimization and trajectory planning for chained Stewart platformsBenjamin Beach0William Chapin1Samantha Chapin2Robert Hildebrand3Erik Komendera4Grado Department of Industrial and Systems Engineering, Virginia Tech, Blacksburg, VA, United StatesFASER Lab, Virginia Tech, Mechanical Engineering, Blacksburg, VA, United StatesFASER Lab, Virginia Tech, Mechanical Engineering, Blacksburg, VA, United StatesGrado Department of Industrial and Systems Engineering, Virginia Tech, Blacksburg, VA, United StatesFASER Lab, Virginia Tech, Mechanical Engineering, Blacksburg, VA, United StatesIntroduction: We study optimization methods for poses and movements of chained Stewart platforms (SPs) that we call an “Assembler” Robot. These chained SPs are parallel mechanisms that are stronger, stiffer, and more precise, on average, than their serial counterparts at the cost of a smaller range of motion. By linking these units in a series, their individual limitations are overcome while maintaining truss-like rigidity. This opens up potential uses in various applications, especially in complex space missions in conjunction with other robots.Methods: To enhance the efficiency and longevity of the Assembler Robot, we developed algorithms and optimization models. The main goal of these methodologies is to efficiently decide on favorable positions and movements that reduce force loads on the robot, consequently minimizing wear.Results: The optimized maneuvers of the interior plates of the Assembler result in more evenly distributed load forces through the legs of each constituent SP. This optimization allows for a larger workspace and a greater overall payload capacity. Our computations primarily focus on assemblers with four chained SPs.Discussion: Although our study primarily revolves around assemblers with four chained SPs, our methods are versatile and can be applied to an arbitrary number of SPs. Furthermore, these methodologies can be extended to general over-actuated truss-like robot architectures. The Assembler, designed to function collaboratively with several other robots, holds promise for a variety of space missions.https://www.frontiersin.org/articles/10.3389/fmech.2023.1225828/fulloptimizationnonlinear programmingroboticskinematicsStewart platformmodular |
| spellingShingle | Benjamin Beach William Chapin Samantha Chapin Robert Hildebrand Erik Komendera Force-controlled pose optimization and trajectory planning for chained Stewart platforms Frontiers in Mechanical Engineering optimization nonlinear programming robotics kinematics Stewart platform modular |
| title | Force-controlled pose optimization and trajectory planning for chained Stewart platforms |
| title_full | Force-controlled pose optimization and trajectory planning for chained Stewart platforms |
| title_fullStr | Force-controlled pose optimization and trajectory planning for chained Stewart platforms |
| title_full_unstemmed | Force-controlled pose optimization and trajectory planning for chained Stewart platforms |
| title_short | Force-controlled pose optimization and trajectory planning for chained Stewart platforms |
| title_sort | force controlled pose optimization and trajectory planning for chained stewart platforms |
| topic | optimization nonlinear programming robotics kinematics Stewart platform modular |
| url | https://www.frontiersin.org/articles/10.3389/fmech.2023.1225828/full |
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