Hopf Bifurcation and Vibration Control for a Thrust Magnetic Bearing with Variable Load Mass
In the working process, the load mass of the thrust magnetic bearing has a significant change. If the load mass changes greatly, the original fixed control parameters cannot ensure that the system is in the optimal stable suspension state, and the performance of the system will become worse or even...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-07-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/18/7/2212 |
| _version_ | 1828137803219730432 |
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| author | Lingling Zhang |
| author_facet | Lingling Zhang |
| author_sort | Lingling Zhang |
| collection | DOAJ |
| description | In the working process, the load mass of the thrust magnetic bearing has a significant change. If the load mass changes greatly, the original fixed control parameters cannot ensure that the system is in the optimal stable suspension state, and the performance of the system will become worse or even self-excited. Firstly, a single freedom degree of the suspension control system model is established, and the critical condition of the system is analyzed when a self-excited oscillation occurs. Then, a linear adaptive control law is proposed for the system with variable parameters, which can tolerate the wide range of load mass. The simulation results show that the adaptive control law can keep the stability of the system when the load mass varies in a large range and avoid the self-excited vibration. |
| first_indexed | 2024-04-11T18:25:43Z |
| format | Article |
| id | doaj.art-c77a48fa0196439d988f4c4ba92f458c |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T18:25:43Z |
| publishDate | 2018-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-c77a48fa0196439d988f4c4ba92f458c2022-12-22T04:09:37ZengMDPI AGSensors1424-82202018-07-01187221210.3390/s18072212s18072212Hopf Bifurcation and Vibration Control for a Thrust Magnetic Bearing with Variable Load MassLingling Zhang0Institute of Applied Mathematics and Intelligent Information Processing, Hunan Women’s University, Changsha 410004, ChinaIn the working process, the load mass of the thrust magnetic bearing has a significant change. If the load mass changes greatly, the original fixed control parameters cannot ensure that the system is in the optimal stable suspension state, and the performance of the system will become worse or even self-excited. Firstly, a single freedom degree of the suspension control system model is established, and the critical condition of the system is analyzed when a self-excited oscillation occurs. Then, a linear adaptive control law is proposed for the system with variable parameters, which can tolerate the wide range of load mass. The simulation results show that the adaptive control law can keep the stability of the system when the load mass varies in a large range and avoid the self-excited vibration.http://www.mdpi.com/1424-8220/18/7/2212thrust magnetic bearinghopf bifurcationvibration controlvariable masslinear adaptive control |
| spellingShingle | Lingling Zhang Hopf Bifurcation and Vibration Control for a Thrust Magnetic Bearing with Variable Load Mass Sensors thrust magnetic bearing hopf bifurcation vibration control variable mass linear adaptive control |
| title | Hopf Bifurcation and Vibration Control for a Thrust Magnetic Bearing with Variable Load Mass |
| title_full | Hopf Bifurcation and Vibration Control for a Thrust Magnetic Bearing with Variable Load Mass |
| title_fullStr | Hopf Bifurcation and Vibration Control for a Thrust Magnetic Bearing with Variable Load Mass |
| title_full_unstemmed | Hopf Bifurcation and Vibration Control for a Thrust Magnetic Bearing with Variable Load Mass |
| title_short | Hopf Bifurcation and Vibration Control for a Thrust Magnetic Bearing with Variable Load Mass |
| title_sort | hopf bifurcation and vibration control for a thrust magnetic bearing with variable load mass |
| topic | thrust magnetic bearing hopf bifurcation vibration control variable mass linear adaptive control |
| url | http://www.mdpi.com/1424-8220/18/7/2212 |
| work_keys_str_mv | AT linglingzhang hopfbifurcationandvibrationcontrolforathrustmagneticbearingwithvariableloadmass |