Dynamic Modeling and Active Vibration Isolation of a Noncontact 6-DOF Lorentz Platform Based on the Exponential Convergence Disturbance Observer
In order to study the vibration isolation and positioning performance of the noncontact 6-DOF platform in the space microgravity environment, this paper presented a cosimulation model of a virtual prototype. Based on the model driven by biaxial noncontact Lorentz force actuators (NLFAs), an equivale...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2021/6641863 |
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| _version_ | 1849693866568974336 |
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| author | Xubin Zhou Weidong Chen Fagang Zhao Dapeng Sui Qing Xiao Xingtian Liu Liping Zhou Quan Zhang |
| author_facet | Xubin Zhou Weidong Chen Fagang Zhao Dapeng Sui Qing Xiao Xingtian Liu Liping Zhou Quan Zhang |
| author_sort | Xubin Zhou |
| collection | DOAJ |
| description | In order to study the vibration isolation and positioning performance of the noncontact 6-DOF platform in the space microgravity environment, this paper presented a cosimulation model of a virtual prototype. Based on the model driven by biaxial noncontact Lorentz force actuators (NLFAs), an equivalent dynamic model has been established. In the meanwhile, the 6-DOF sliding mode robust controller with exponential convergence disturbance observer is developed. The mechanical system simulation model was designed using ADAMS, and the corresponding 6-DOF decoupling control system and disturbance observer programs were developed using MATLAB/Simulink. According to the mechatronics simulation results, the system can enable the floating platform to achieve micron-level posture positioning within 0.5 s. In vibration isolation simulation, the disturbance observer can predict the external disturbance input and compensate the control force more accurately so that the floating platform can effectively suppress low-frequency disturbance and step disturbance under the control of the sliding mode controller. And the displacement of the floating platform under the disturbance of 1–100 Hz frequency sweep is less than 1 μm. |
| format | Article |
| id | doaj-art-4f838540aa1f41368c41c3339614f85a |
| institution | DOAJ |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-4f838540aa1f41368c41c3339614f85a2025-08-20T03:20:16ZengWileyShock and Vibration1070-96221875-92032021-01-01202110.1155/2021/66418636641863Dynamic Modeling and Active Vibration Isolation of a Noncontact 6-DOF Lorentz Platform Based on the Exponential Convergence Disturbance ObserverXubin Zhou0Weidong Chen1Fagang Zhao2Dapeng Sui3Qing Xiao4Xingtian Liu5Liping Zhou6Quan Zhang7Academy of Astronautics, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaAcademy of Astronautics, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaShanghai Satellite Engineering Institute, Shanghai 201108, ChinaShanghai Electro-Mechanical Engineering Institute, Shanghai 201108, ChinaSchool of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200072, ChinaShanghai Satellite Engineering Institute, Shanghai 201108, ChinaShanghai Satellite Engineering Institute, Shanghai 201108, ChinaSchool of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200072, ChinaIn order to study the vibration isolation and positioning performance of the noncontact 6-DOF platform in the space microgravity environment, this paper presented a cosimulation model of a virtual prototype. Based on the model driven by biaxial noncontact Lorentz force actuators (NLFAs), an equivalent dynamic model has been established. In the meanwhile, the 6-DOF sliding mode robust controller with exponential convergence disturbance observer is developed. The mechanical system simulation model was designed using ADAMS, and the corresponding 6-DOF decoupling control system and disturbance observer programs were developed using MATLAB/Simulink. According to the mechatronics simulation results, the system can enable the floating platform to achieve micron-level posture positioning within 0.5 s. In vibration isolation simulation, the disturbance observer can predict the external disturbance input and compensate the control force more accurately so that the floating platform can effectively suppress low-frequency disturbance and step disturbance under the control of the sliding mode controller. And the displacement of the floating platform under the disturbance of 1–100 Hz frequency sweep is less than 1 μm.http://dx.doi.org/10.1155/2021/6641863 |
| spellingShingle | Xubin Zhou Weidong Chen Fagang Zhao Dapeng Sui Qing Xiao Xingtian Liu Liping Zhou Quan Zhang Dynamic Modeling and Active Vibration Isolation of a Noncontact 6-DOF Lorentz Platform Based on the Exponential Convergence Disturbance Observer Shock and Vibration |
| title | Dynamic Modeling and Active Vibration Isolation of a Noncontact 6-DOF Lorentz Platform Based on the Exponential Convergence Disturbance Observer |
| title_full | Dynamic Modeling and Active Vibration Isolation of a Noncontact 6-DOF Lorentz Platform Based on the Exponential Convergence Disturbance Observer |
| title_fullStr | Dynamic Modeling and Active Vibration Isolation of a Noncontact 6-DOF Lorentz Platform Based on the Exponential Convergence Disturbance Observer |
| title_full_unstemmed | Dynamic Modeling and Active Vibration Isolation of a Noncontact 6-DOF Lorentz Platform Based on the Exponential Convergence Disturbance Observer |
| title_short | Dynamic Modeling and Active Vibration Isolation of a Noncontact 6-DOF Lorentz Platform Based on the Exponential Convergence Disturbance Observer |
| title_sort | dynamic modeling and active vibration isolation of a noncontact 6 dof lorentz platform based on the exponential convergence disturbance observer |
| url | http://dx.doi.org/10.1155/2021/6641863 |
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