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Title
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Investigation of a 2-DOF Active Magnetic Bearing Actuator for Unmanned Underwater Vehicle Thruster Application
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Sub-Title |
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Subject |
Active magnetic bearing, AMB, electro-magnetic actuator, magnetically coupled thruster, modern controller, LQG
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Sub-Subject |
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Author |
Muhammad Abdul Ahad, Sarvat M. Ahmad
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Publish Year |
2021 |
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Diss#. |
https://doi.org/10.3390/act10040079 |
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Pages |
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Text Language |
English |
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Accession |
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Library Section |
Research Article |
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Abstract |
In this work, a novel application of Active Magnetic Bearing (AMB) is proposed to integrate
AMB in the Magnetically Coupled Thruster (MCT) assembly for underwater application. In this study,
a 2-Degree-Of-Freedom (DOF) AMB is developed and investigated for the MCT of an Unmanned
Underwater Vehicle (UUV). The paper presents the detailed electro-mechanical modeling of the
in-house developed AMB system. The intractable problem of rotor suspension and rotation with
opposing pairs of electromagnets is considered. A Linear Quadratic Gaussian (LQG) controller
is designed and analyzed in the frequency domain for the stabilization of the open-loop unstable
AMB for MCT. The performance specifications of the controller, such as reference tracking and
disturbance rejection are achieved and evaluated through real-time implementation of the controller.
The compensator also performed reasonably well during the dynamic operations, i.e., when the
rotor-propeller assembly was spun at 1500 rpm. This roto
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