Effects of Imperfect Assembly and Magnetic Properties on the Three-Pole AMB System

This study is concerned with a three-pole active magnetic bearing (AMB) system with assembly error and non-uniform flux distribution. The assembly error, which is the result of the misalignment of the back-up bearing and the stator of AMB, induces strong nonlinear uncertainty in the AMB dynamics. Th...

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Main Authors: Shyh-Leh Chen, Yi-Tsung Li, Chin-Hsiang Lin, Chao-Yun Chen
Format: Article
Language:English
Published: MDPI AG 2022-12-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/13/1/347
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author Shyh-Leh Chen
Yi-Tsung Li
Chin-Hsiang Lin
Chao-Yun Chen
author_facet Shyh-Leh Chen
Yi-Tsung Li
Chin-Hsiang Lin
Chao-Yun Chen
author_sort Shyh-Leh Chen
collection DOAJ
description This study is concerned with a three-pole active magnetic bearing (AMB) system with assembly error and non-uniform flux distribution. The assembly error, which is the result of the misalignment of the back-up bearing and the stator of AMB, induces strong nonlinear uncertainty in the AMB dynamics. The non-uniform flux distribution, which is mainly due to non-uniform material properties, manufacturing errors, etc., makes the magnetic force model more complicated. A stable-levitation controller is designed in consideration of the above factors. The controller is designed using the method of feedback linearization and integral sliding mode control (ISMC). Both simulation and experimental results indicate that the rotor can be levitated to the center of the back-up bearing, verifying the effectiveness of the proposed stable-levitation controller.
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spelling doaj.art-2050de762bdc418293e4e12d70eaadc72023-11-16T14:55:48ZengMDPI AGApplied Sciences2076-34172022-12-0113134710.3390/app13010347Effects of Imperfect Assembly and Magnetic Properties on the Three-Pole AMB SystemShyh-Leh Chen0Yi-Tsung Li1Chin-Hsiang Lin2Chao-Yun Chen3Department of Mechanical Engineering and Advanced Institute of Manufacturing with High-Tech Innovations, National Chung Cheng University, Chiayi 621, TaiwanDepartment of Mechanical Engineering and Advanced Institute of Manufacturing with High-Tech Innovations, National Chung Cheng University, Chiayi 621, TaiwanDepartment of Mechanical Engineering and Advanced Institute of Manufacturing with High-Tech Innovations, National Chung Cheng University, Chiayi 621, TaiwanGreen Energy and Environment Research Laboratories, Industrial Technology Research Institute, Hsin-Chu 310, TaiwanThis study is concerned with a three-pole active magnetic bearing (AMB) system with assembly error and non-uniform flux distribution. The assembly error, which is the result of the misalignment of the back-up bearing and the stator of AMB, induces strong nonlinear uncertainty in the AMB dynamics. The non-uniform flux distribution, which is mainly due to non-uniform material properties, manufacturing errors, etc., makes the magnetic force model more complicated. A stable-levitation controller is designed in consideration of the above factors. The controller is designed using the method of feedback linearization and integral sliding mode control (ISMC). Both simulation and experimental results indicate that the rotor can be levitated to the center of the back-up bearing, verifying the effectiveness of the proposed stable-levitation controller.https://www.mdpi.com/2076-3417/13/1/347active magnetic bearingassembly errorintegral sliding mode control
spellingShingle Shyh-Leh Chen
Yi-Tsung Li
Chin-Hsiang Lin
Chao-Yun Chen
Effects of Imperfect Assembly and Magnetic Properties on the Three-Pole AMB System
Applied Sciences
active magnetic bearing
assembly error
integral sliding mode control
title Effects of Imperfect Assembly and Magnetic Properties on the Three-Pole AMB System
title_full Effects of Imperfect Assembly and Magnetic Properties on the Three-Pole AMB System
title_fullStr Effects of Imperfect Assembly and Magnetic Properties on the Three-Pole AMB System
title_full_unstemmed Effects of Imperfect Assembly and Magnetic Properties on the Three-Pole AMB System
title_short Effects of Imperfect Assembly and Magnetic Properties on the Three-Pole AMB System
title_sort effects of imperfect assembly and magnetic properties on the three pole amb system
topic active magnetic bearing
assembly error
integral sliding mode control
url https://www.mdpi.com/2076-3417/13/1/347
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