Configuration Design and Size Optimization of a High-Precision Novel Parallel Pointing Mechanism Based on Interference Separation
Abstract Pointing mechanism is widely used in aerospace field, and its pointing accuracy and stability have high requirements. The pointing mechanism will be affected by external interference when it works. In order to eliminate the impact of interference forces on the output accuracy of the mechani...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2024-11-01
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| Series: | Chinese Journal of Mechanical Engineering |
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| Online Access: | https://doi.org/10.1186/s10033-024-01105-6 |
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| _version_ | 1850162770844057600 |
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| author | Sen Wang Shihua Li Xueyan Han Jiahao Wei Xueyuan Gao Hongyu Xu |
| author_facet | Sen Wang Shihua Li Xueyan Han Jiahao Wei Xueyuan Gao Hongyu Xu |
| author_sort | Sen Wang |
| collection | DOAJ |
| description | Abstract Pointing mechanism is widely used in aerospace field, and its pointing accuracy and stability have high requirements. The pointing mechanism will be affected by external interference when it works. In order to eliminate the impact of interference forces on the output accuracy of the mechanism, firstly, this paper proposes a design method for high-precision pointing mechanisms based on interference separation, aiming at the high-precision pointing requirements of pointing mechanisms. Based on the screw theory, a synthesis method for inner compensation mechanisms has been proposed. And a new type of double-layer parallel mechanism has been designed to compensate for interference forces. Then, the kinematics and dynamics of the mechanism are carried out. An evaluation index for compensating external interference forces is proposed. The interference compensation analysis is conducted for the pointing mechanism. The correctness of the proposed interference force compensation coefficient is verified. Finally, in order to find the optimal solution for the workspace and interference force compensation coefficient of the pointing mechanism, multi-objective optimization design of the structural parameters of the mechanism was carried out based on the particle swarm optimization algorithm. This provides a theoretical basis for the prototype design of the subsequent double-layer parallel mechanism. This double-layer parallel mechanism combines the advantages of large load-bearing capacity, large workspace, and high output accuracy. It can be better applied in the aerospace field where high-precision pointing and force interference compensation are integrated. |
| format | Article |
| id | doaj-art-4c759d1187ec484b9b670020fe3e0f22 |
| institution | OA Journals |
| issn | 2192-8258 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Chinese Journal of Mechanical Engineering |
| spelling | doaj-art-4c759d1187ec484b9b670020fe3e0f222025-08-20T02:22:28ZengSpringerOpenChinese Journal of Mechanical Engineering2192-82582024-11-0137112210.1186/s10033-024-01105-6Configuration Design and Size Optimization of a High-Precision Novel Parallel Pointing Mechanism Based on Interference SeparationSen Wang0Shihua Li1Xueyan Han2Jiahao Wei3Xueyuan Gao4Hongyu Xu5Hebei Provincial Key Laboratory of Parallel Robot and Mechatronic Systems, Yanshan UniversityHebei Provincial Key Laboratory of Parallel Robot and Mechatronic Systems, Yanshan UniversityHebei Provincial Key Laboratory of Parallel Robot and Mechatronic Systems, Yanshan UniversityHebei Provincial Key Laboratory of Parallel Robot and Mechatronic Systems, Yanshan UniversityHebei Provincial Key Laboratory of Parallel Robot and Mechatronic Systems, Yanshan UniversityHebei Provincial Key Laboratory of Parallel Robot and Mechatronic Systems, Yanshan UniversityAbstract Pointing mechanism is widely used in aerospace field, and its pointing accuracy and stability have high requirements. The pointing mechanism will be affected by external interference when it works. In order to eliminate the impact of interference forces on the output accuracy of the mechanism, firstly, this paper proposes a design method for high-precision pointing mechanisms based on interference separation, aiming at the high-precision pointing requirements of pointing mechanisms. Based on the screw theory, a synthesis method for inner compensation mechanisms has been proposed. And a new type of double-layer parallel mechanism has been designed to compensate for interference forces. Then, the kinematics and dynamics of the mechanism are carried out. An evaluation index for compensating external interference forces is proposed. The interference compensation analysis is conducted for the pointing mechanism. The correctness of the proposed interference force compensation coefficient is verified. Finally, in order to find the optimal solution for the workspace and interference force compensation coefficient of the pointing mechanism, multi-objective optimization design of the structural parameters of the mechanism was carried out based on the particle swarm optimization algorithm. This provides a theoretical basis for the prototype design of the subsequent double-layer parallel mechanism. This double-layer parallel mechanism combines the advantages of large load-bearing capacity, large workspace, and high output accuracy. It can be better applied in the aerospace field where high-precision pointing and force interference compensation are integrated.https://doi.org/10.1186/s10033-024-01105-6Pointing mechanismInterference separationDouble-layer parallel mechanismForce compensation coefficientMulti-objective optimization |
| spellingShingle | Sen Wang Shihua Li Xueyan Han Jiahao Wei Xueyuan Gao Hongyu Xu Configuration Design and Size Optimization of a High-Precision Novel Parallel Pointing Mechanism Based on Interference Separation Chinese Journal of Mechanical Engineering Pointing mechanism Interference separation Double-layer parallel mechanism Force compensation coefficient Multi-objective optimization |
| title | Configuration Design and Size Optimization of a High-Precision Novel Parallel Pointing Mechanism Based on Interference Separation |
| title_full | Configuration Design and Size Optimization of a High-Precision Novel Parallel Pointing Mechanism Based on Interference Separation |
| title_fullStr | Configuration Design and Size Optimization of a High-Precision Novel Parallel Pointing Mechanism Based on Interference Separation |
| title_full_unstemmed | Configuration Design and Size Optimization of a High-Precision Novel Parallel Pointing Mechanism Based on Interference Separation |
| title_short | Configuration Design and Size Optimization of a High-Precision Novel Parallel Pointing Mechanism Based on Interference Separation |
| title_sort | configuration design and size optimization of a high precision novel parallel pointing mechanism based on interference separation |
| topic | Pointing mechanism Interference separation Double-layer parallel mechanism Force compensation coefficient Multi-objective optimization |
| url | https://doi.org/10.1186/s10033-024-01105-6 |
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