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Hybrid Approach of Finite Element Method, Kigring Metamodel, and Multiobjective Genetic Algorithm for Computational Optimization of a Flexure Elbow Joint for Upper-Limb Assistive Device
Joint Authors
Dao, Thanh-Phong
Chau, Ngoc Le
Nguyen, Duc Nam
Dang, Van Anh
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-01-27
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
Modeling for robotic joints is actually complex and may lead to wrong Pareto-optimal solutions.
Hence, this paper develops a new hybrid approach for multiobjective optimization design of a flexure elbow joint.
The joint is designed for the upper-limb assistive device for physically disable people.
The optimization problem considers three design variables and two objective functions.
An efficient hybrid optimization approach of central composite design (CDD), finite element method (FEM), Kigring metamodel, and multiobjective genetic algorithm (MOGA) is developed.
The CDD is used to establish the number of numerical experiments.
The FEM is developed to retrieve the strain energy and the reaction torque of joint.
And then, the Kigring metamodel is used as a black-box to find the pseudoobjective functions.
Based on pseudoobjective functions, the MOGA is applied to find the optimal solutions.
Traditionally, an evolutionary optimization algorithm can only find one Pareto front.
However, the proposed approach can generate 6 Pareto-optimal solutions, as near optimal candidates, which provides a good decision-maker.
Based on the user’s real-work problem, one of the best optimal solutions is chosen.
The results found that the optimal strain energy is about 0.0033 mJ and the optimal torque is approximately 588.94 Nm.
Analysis of variance is performed to identify the significant contribution of design variables.
The sensitivity analysis is then carried out to determine the effect degree of each parameter on the responses.
The predictions are in a good agreement with validations.
It confirms that the proposed hybrid optimization approach has an effectiveness to solve for complex optimization problems.
American Psychological Association (APA)
Nguyen, Duc Nam& Dao, Thanh-Phong& Chau, Ngoc Le& Dang, Van Anh. 2019. Hybrid Approach of Finite Element Method, Kigring Metamodel, and Multiobjective Genetic Algorithm for Computational Optimization of a Flexure Elbow Joint for Upper-Limb Assistive Device. Complexity،Vol. 2019, no. 2019, pp.1-13.
https://search.emarefa.net/detail/BIM-1131362
Modern Language Association (MLA)
Nguyen, Duc Nam…[et al.]. Hybrid Approach of Finite Element Method, Kigring Metamodel, and Multiobjective Genetic Algorithm for Computational Optimization of a Flexure Elbow Joint for Upper-Limb Assistive Device. Complexity No. 2019 (2019), pp.1-13.
https://search.emarefa.net/detail/BIM-1131362
American Medical Association (AMA)
Nguyen, Duc Nam& Dao, Thanh-Phong& Chau, Ngoc Le& Dang, Van Anh. Hybrid Approach of Finite Element Method, Kigring Metamodel, and Multiobjective Genetic Algorithm for Computational Optimization of a Flexure Elbow Joint for Upper-Limb Assistive Device. Complexity. 2019. Vol. 2019, no. 2019, pp.1-13.
https://search.emarefa.net/detail/BIM-1131362
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1131362