L1 Adaptive Control for a Vertical Rotor Orientation System
Bottom-fixed vertical rotating devices are widely used in industrial and civilian fields. The free upside of the rotor will cause vibration and lead to noise and damage during operation. Meanwhile, parameter uncertainties, nonlinearities and external disturbances will further deteriorate the perform...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2016-08-01
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| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | http://www.mdpi.com/2076-3417/6/9/242 |
| _version_ | 1818537065734733824 |
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| author | Sijia Liu Yu Fan Jun Di Mingming Ji |
| author_facet | Sijia Liu Yu Fan Jun Di Mingming Ji |
| author_sort | Sijia Liu |
| collection | DOAJ |
| description | Bottom-fixed vertical rotating devices are widely used in industrial and civilian fields. The free upside of the rotor will cause vibration and lead to noise and damage during operation. Meanwhile, parameter uncertainties, nonlinearities and external disturbances will further deteriorate the performance of the rotor. Therefore, in this paper, we present a rotor orientation control system based on an active magnetic bearing with L 1 adaptive control to restrain the influence of the nonlinearity and uncertainty and reduce the vibration amplitude of the vertical rotor. The boundedness and stability of the adaptive system are analyzed via a theoretical derivation. The impact of the adaptive gain is discussed through simulation. An experimental rig based on dSPACE is designed to test the validity of the rotor orientation system. The experimental results show that the relative vibration amplitude of the rotor using the L 1 adaptive controller will be reduced to ∼50% of that in the initial state, which is a 10% greater reduction than can be achieved with the nonadaptive controller. The control approach in this paper is of some significance to solve the orientation control problem in a low-speed vertical rotor with uncertainties and nonlinearities. |
| first_indexed | 2024-12-11T18:45:57Z |
| format | Article |
| id | doaj.art-8a3d1848171340a1bd4fc0ef96e241a2 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-12-11T18:45:57Z |
| publishDate | 2016-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-8a3d1848171340a1bd4fc0ef96e241a22022-12-22T00:54:27ZengMDPI AGApplied Sciences2076-34172016-08-016924210.3390/app6090242app6090242L1 Adaptive Control for a Vertical Rotor Orientation SystemSijia Liu0Yu Fan1Jun Di2Mingming Ji3School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, ChinaSchool of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, ChinaSchool of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, ChinaSchool of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, ChinaBottom-fixed vertical rotating devices are widely used in industrial and civilian fields. The free upside of the rotor will cause vibration and lead to noise and damage during operation. Meanwhile, parameter uncertainties, nonlinearities and external disturbances will further deteriorate the performance of the rotor. Therefore, in this paper, we present a rotor orientation control system based on an active magnetic bearing with L 1 adaptive control to restrain the influence of the nonlinearity and uncertainty and reduce the vibration amplitude of the vertical rotor. The boundedness and stability of the adaptive system are analyzed via a theoretical derivation. The impact of the adaptive gain is discussed through simulation. An experimental rig based on dSPACE is designed to test the validity of the rotor orientation system. The experimental results show that the relative vibration amplitude of the rotor using the L 1 adaptive controller will be reduced to ∼50% of that in the initial state, which is a 10% greater reduction than can be achieved with the nonadaptive controller. The control approach in this paper is of some significance to solve the orientation control problem in a low-speed vertical rotor with uncertainties and nonlinearities.http://www.mdpi.com/2076-3417/6/9/242vertical rotoradaptive controlorientationuncertaintynonlinearitystability |
| spellingShingle | Sijia Liu Yu Fan Jun Di Mingming Ji L1 Adaptive Control for a Vertical Rotor Orientation System Applied Sciences vertical rotor adaptive control orientation uncertainty nonlinearity stability |
| title | L1 Adaptive Control for a Vertical Rotor Orientation System |
| title_full | L1 Adaptive Control for a Vertical Rotor Orientation System |
| title_fullStr | L1 Adaptive Control for a Vertical Rotor Orientation System |
| title_full_unstemmed | L1 Adaptive Control for a Vertical Rotor Orientation System |
| title_short | L1 Adaptive Control for a Vertical Rotor Orientation System |
| title_sort | l1 adaptive control for a vertical rotor orientation system |
| topic | vertical rotor adaptive control orientation uncertainty nonlinearity stability |
| url | http://www.mdpi.com/2076-3417/6/9/242 |
| work_keys_str_mv | AT sijialiu l1adaptivecontrolforaverticalrotororientationsystem AT yufan l1adaptivecontrolforaverticalrotororientationsystem AT jundi l1adaptivecontrolforaverticalrotororientationsystem AT mingmingji l1adaptivecontrolforaverticalrotororientationsystem |