Closed-loop performance of a six degree-of-freedom precision magnetic actuator
The slotless permanent-magnet self-bearing motor (SBM) technology is used to fully provide radial bearing and motoring functionality simultaneously in a six degree-of-freedom magnetic actuator for potential precision pointing and tracking applications in space such as intersatellite laser communicat...
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| Veröffentlicht in: | IEEE/ASME transactions on mechatronics 2005-12, Vol.10 (6), p.666-674 |
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| container_title | IEEE/ASME transactions on mechatronics |
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| creator | Zhaohui Ren Stephens, L.S. |
| description | The slotless permanent-magnet self-bearing motor (SBM) technology is used to fully provide radial bearing and motoring functionality simultaneously in a six degree-of-freedom magnetic actuator for potential precision pointing and tracking applications in space such as intersatellite laser communications. This novel precision magnetic actuator incorporates two SBMs to produce both radial bearing forces and motoring torque, and one active magnetic bearing to provide axial support, and thus allows for a complete electromagnetic suspension and precision noncontact pointing. An analytical representation of the overall dynamic system is presented for controller design. Six decoupled proportional-integral-derivative controllers are designed, and a feedback control system is implemented. The closed-loop performance confirms experimentally that the precision magnetic actuator is capable of smooth angular slewing while maintaining good stabilization. The most encouraging result is that the actuator achieves a high angular resolution of 754 nrad over a large azimuth range of /spl plusmn/45/spl deg/. |
| doi_str_mv | 10.1109/TMECH.2005.859823 |
| format | Article |
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This novel precision magnetic actuator incorporates two SBMs to produce both radial bearing forces and motoring torque, and one active magnetic bearing to provide axial support, and thus allows for a complete electromagnetic suspension and precision noncontact pointing. An analytical representation of the overall dynamic system is presented for controller design. Six decoupled proportional-integral-derivative controllers are designed, and a feedback control system is implemented. The closed-loop performance confirms experimentally that the precision magnetic actuator is capable of smooth angular slewing while maintaining good stabilization. The most encouraging result is that the actuator achieves a high angular resolution of 754 nrad over a large azimuth range of /spl plusmn/45/spl deg/.</description><identifier>ISSN: 1083-4435</identifier><identifier>EISSN: 1941-014X</identifier><identifier>DOI: 10.1109/TMECH.2005.859823</identifier><identifier>CODEN: IATEFW</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Active magnetic bearing (AMB) ; Actuators ; Communication system control ; Control systems ; Degrees of freedom ; Dynamical systems ; Dynamics ; Electromagnetic forces ; laser communication ; Magnetic analysis ; Magnetic levitation ; Mathematical analysis ; Mechatronics ; Permanent magnet motors ; permanent-magnet (PM) self-bearing motor (SBM) ; Pi control ; precision pointing and tracking ; Radial bearings ; Space technology ; Torque</subject><ispartof>IEEE/ASME transactions on mechatronics, 2005-12, Vol.10 (6), p.666-674</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 2005</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c421t-526145ad9eb138a690410fa0113158974934e387d2a70b7b30ce8109a03696183</citedby><cites>FETCH-LOGICAL-c421t-526145ad9eb138a690410fa0113158974934e387d2a70b7b30ce8109a03696183</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/1556570$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,780,784,796,27924,27925,54758</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/1556570$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Zhaohui Ren</creatorcontrib><creatorcontrib>Stephens, L.S.</creatorcontrib><title>Closed-loop performance of a six degree-of-freedom precision magnetic actuator</title><title>IEEE/ASME transactions on mechatronics</title><addtitle>TMECH</addtitle><description>The slotless permanent-magnet self-bearing motor (SBM) technology is used to fully provide radial bearing and motoring functionality simultaneously in a six degree-of-freedom magnetic actuator for potential precision pointing and tracking applications in space such as intersatellite laser communications. This novel precision magnetic actuator incorporates two SBMs to produce both radial bearing forces and motoring torque, and one active magnetic bearing to provide axial support, and thus allows for a complete electromagnetic suspension and precision noncontact pointing. An analytical representation of the overall dynamic system is presented for controller design. Six decoupled proportional-integral-derivative controllers are designed, and a feedback control system is implemented. The closed-loop performance confirms experimentally that the precision magnetic actuator is capable of smooth angular slewing while maintaining good stabilization. The most encouraging result is that the actuator achieves a high angular resolution of 754 nrad over a large azimuth range of /spl plusmn/45/spl deg/.</description><subject>Active magnetic bearing (AMB)</subject><subject>Actuators</subject><subject>Communication system control</subject><subject>Control systems</subject><subject>Degrees of freedom</subject><subject>Dynamical systems</subject><subject>Dynamics</subject><subject>Electromagnetic forces</subject><subject>laser communication</subject><subject>Magnetic analysis</subject><subject>Magnetic levitation</subject><subject>Mathematical analysis</subject><subject>Mechatronics</subject><subject>Permanent magnet motors</subject><subject>permanent-magnet (PM) self-bearing motor (SBM)</subject><subject>Pi control</subject><subject>precision pointing and tracking</subject><subject>Radial bearings</subject><subject>Space technology</subject><subject>Torque</subject><issn>1083-4435</issn><issn>1941-014X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNp9kUtLxEAQhIMouD5-gHgJHvSUtTvzyMxRFnUFHxcFb8Ns0lkiSSbOJKD_3llXEDx4qj58VXRRSXKCMEcEffn8cL1YznMAMVdCq5ztJDPUHDNA_robb1As45yJ_eQghDcA4Ag4Sx4XrQtUZa1zQzqQr53vbF9S6urUpqH5SCtae6LM1VkdtXJdOngqm9C4Pu3suqexKVNbjpMdnT9K9mrbBjr-0cPk5eb6ebHM7p9u7xZX91nJcxwzkUvkwlaaVsiUlXrzTW0BkaFQuuCacWKqqHJbwKpYMShJxZoWmNQSFTtMLra5g3fvE4XRdE0oqW1tT24KRmmZIwjGInn-L5kXWhcC8gie_QHf3OT72MIoWUipsYAI4RYqvQvBU20G33TWfxoEsxnCfA9hNkOY7RDRc7r1NET0ywshRUz8AuJAggQ</recordid><startdate>20051201</startdate><enddate>20051201</enddate><creator>Zhaohui Ren</creator><creator>Stephens, L.S.</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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This novel precision magnetic actuator incorporates two SBMs to produce both radial bearing forces and motoring torque, and one active magnetic bearing to provide axial support, and thus allows for a complete electromagnetic suspension and precision noncontact pointing. An analytical representation of the overall dynamic system is presented for controller design. Six decoupled proportional-integral-derivative controllers are designed, and a feedback control system is implemented. The closed-loop performance confirms experimentally that the precision magnetic actuator is capable of smooth angular slewing while maintaining good stabilization. The most encouraging result is that the actuator achieves a high angular resolution of 754 nrad over a large azimuth range of /spl plusmn/45/spl deg/.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/TMECH.2005.859823</doi><tpages>9</tpages></addata></record> |
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| identifier | ISSN: 1083-4435 |
| ispartof | IEEE/ASME transactions on mechatronics, 2005-12, Vol.10 (6), p.666-674 |
| issn | 1083-4435 1941-014X |
| language | eng |
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| source | IEEE Electronic Library (IEL) |
| subjects | Active magnetic bearing (AMB) Actuators Communication system control Control systems Degrees of freedom Dynamical systems Dynamics Electromagnetic forces laser communication Magnetic analysis Magnetic levitation Mathematical analysis Mechatronics Permanent magnet motors permanent-magnet (PM) self-bearing motor (SBM) Pi control precision pointing and tracking Radial bearings Space technology Torque |
| title | Closed-loop performance of a six degree-of-freedom precision magnetic actuator |
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