Active Magnetic Bearings Stiffness and Damping Identification from Frequency Characteristics of Control System
At present, the stiffness and damping identification for active magnetic bearings (AMBs) are still in the stage of theoretical analysis. The theoretical analysis indicates that if the mechanical structure and system parameters are determined, AMBs stiffness and damping are only related to frequency...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2016-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2016/1067506 |
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| _version_ | 1832550519763107840 |
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| author | Chaowu Jin Yuanping Xu Jin Zhou Changli Cheng |
| author_facet | Chaowu Jin Yuanping Xu Jin Zhou Changli Cheng |
| author_sort | Chaowu Jin |
| collection | DOAJ |
| description | At present, the stiffness and damping identification for active magnetic bearings (AMBs) are still in the stage of theoretical analysis. The theoretical analysis indicates that if the mechanical structure and system parameters are determined, AMBs stiffness and damping are only related to frequency characteristic of control system, ignoring operating condition. More importantly, few verification methods are proposed. Considering the shortcomings of the theoretical identification, this paper obtains these coefficients from the experiment by using the magnetic bearing as a sine exciter. The identification results show that AMBs stiffness and damping have a great relationship with the control system and rotating speed. Specifically, at low rotating speed, the stiffness and damping can be obtained from the rotor static suspension by adding the same excitation frequency. However, at high speed, different from the static suspension situation, the AMBs supporting coefficients are not only related to the frequency characteristics of control system, but also related to the system operating conditions. |
| format | Article |
| id | doaj-art-d14f2fdbe010451fb2d5d6c052a2205d |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-d14f2fdbe010451fb2d5d6c052a2205d2025-02-03T06:06:36ZengWileyShock and Vibration1070-96221875-92032016-01-01201610.1155/2016/10675061067506Active Magnetic Bearings Stiffness and Damping Identification from Frequency Characteristics of Control SystemChaowu Jin0Yuanping Xu1Jin Zhou2Changli Cheng3College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaCollege of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaCollege of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaCollege of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaAt present, the stiffness and damping identification for active magnetic bearings (AMBs) are still in the stage of theoretical analysis. The theoretical analysis indicates that if the mechanical structure and system parameters are determined, AMBs stiffness and damping are only related to frequency characteristic of control system, ignoring operating condition. More importantly, few verification methods are proposed. Considering the shortcomings of the theoretical identification, this paper obtains these coefficients from the experiment by using the magnetic bearing as a sine exciter. The identification results show that AMBs stiffness and damping have a great relationship with the control system and rotating speed. Specifically, at low rotating speed, the stiffness and damping can be obtained from the rotor static suspension by adding the same excitation frequency. However, at high speed, different from the static suspension situation, the AMBs supporting coefficients are not only related to the frequency characteristics of control system, but also related to the system operating conditions.http://dx.doi.org/10.1155/2016/1067506 |
| spellingShingle | Chaowu Jin Yuanping Xu Jin Zhou Changli Cheng Active Magnetic Bearings Stiffness and Damping Identification from Frequency Characteristics of Control System Shock and Vibration |
| title | Active Magnetic Bearings Stiffness and Damping Identification from Frequency Characteristics of Control System |
| title_full | Active Magnetic Bearings Stiffness and Damping Identification from Frequency Characteristics of Control System |
| title_fullStr | Active Magnetic Bearings Stiffness and Damping Identification from Frequency Characteristics of Control System |
| title_full_unstemmed | Active Magnetic Bearings Stiffness and Damping Identification from Frequency Characteristics of Control System |
| title_short | Active Magnetic Bearings Stiffness and Damping Identification from Frequency Characteristics of Control System |
| title_sort | active magnetic bearings stiffness and damping identification from frequency characteristics of control system |
| url | http://dx.doi.org/10.1155/2016/1067506 |
| work_keys_str_mv | AT chaowujin activemagneticbearingsstiffnessanddampingidentificationfromfrequencycharacteristicsofcontrolsystem AT yuanpingxu activemagneticbearingsstiffnessanddampingidentificationfromfrequencycharacteristicsofcontrolsystem AT jinzhou activemagneticbearingsstiffnessanddampingidentificationfromfrequencycharacteristicsofcontrolsystem AT changlicheng activemagneticbearingsstiffnessanddampingidentificationfromfrequencycharacteristicsofcontrolsystem |