Closed-loop performance of a six degree-of-freedom precision magnetic actuator

Zhaohui Ren; Lyndon S. Stephens

doi:10.1109/TMECH.2005.859823

Closed-loop performance of a six degree-of-freedom precision magnetic actuator

Zhaohui Ren, Lyndon S. Stephens

Producción científica: Article › revisión exhaustiva

31 Citas (Scopus)

Resumen

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 eleetromagnetic 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 magnetie 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 ±45°.

Idioma original	English
Páginas (desde-hasta)	666-674
Número de páginas	9
Publicación	IEEE/ASME Transactions on Mechatronics
Volumen	10
N.º	6
DOI	https://doi.org/10.1109/TMECH.2005.859823
Estado	Published - dic 2005

Nota bibliográfica

Funding Information:
Manuscript received May 30, 2005; revised August 16, 2005. This work was supported in part by Airex Corporation, Dover, NH. Z. Ren was with the Department of Mechanical Engineering, University of Kentucky, Lexington, KY 40506 USA. She is now with Mohawk Innovative Technology, Inc., Albany, NY 12205 USA (e-mail: zh [email protected]). L. S. Stephens is with the Department of Mechanical Engineering, University of Kentucky, Lexington, KY 40506 USA (e-mail: [email protected]). Digital Object Identifier 10.1109/TMECH.2005.859823

Financiación

Manuscript received May 30, 2005; revised August 16, 2005. This work was supported in part by Airex Corporation, Dover, NH. Z. Ren was with the Department of Mechanical Engineering, University of Kentucky, Lexington, KY 40506 USA. She is now with Mohawk Innovative Technology, Inc., Albany, NY 12205 USA (e-mail: zh [email protected]). L. S. Stephens is with the Department of Mechanical Engineering, University of Kentucky, Lexington, KY 40506 USA (e-mail: [email protected]). Digital Object Identifier 10.1109/TMECH.2005.859823

Financiadores	Número del financiador
Airex Corporation

ASJC Scopus subject areas

Control and Systems Engineering
Computer Science Applications
Electrical and Electronic Engineering

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10.1109/TMECH.2005.859823

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abstract = "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 eleetromagnetic 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 magnetie 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 ±45°.",

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N2 - 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 eleetromagnetic 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 magnetie 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 ±45°.

AB - 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 eleetromagnetic 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 magnetie 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 ±45°.

KW - Active magnetic bearing (AMB)

KW - Laser communication

KW - Permanent-magnet (PM) self-bearing motor (SBM)

KW - Precision pointing and tracking

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Closed-loop performance of a six degree-of-freedom precision magnetic actuator

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