Proceedings of the 3rd International Conference on Mechatronics, Robotics and Automation

The Relationship between Active Magnetic Bearing System's Stiffness and Bias Current

Authors
Jiong Wang, Hu Cheng, Hourao Luo
Corresponding Author
Jiong Wang
Available Online April 2015.
DOI
https://doi.org/10.2991/icmra-15.2015.203How to use a DOI?
Keywords
Active magnetic bearing; PD control; bearing stiffness; bias current
Abstract
The paper established a single-degree-of-freedom model for Active magnetic bearing (AMB) system, on the purpose to analyze the stability range of parameters for AMB close-loop system under the control of PD. Furthermore, it focused on the study of relationship between the AMB system's stiffness and the bias current under stable system. Finally, it presented analysis of a simulation example,to compare and verify the theoretical deduction. The results showed that, if other parameters remained unchanged, AMB close-loop system`s stiffness was a quadratic function which had bias current as an independent variable. However, the mere increment of bias current did not increase the stiffness of AMB system without boundary, but there existed a maximum stiffness for a certain bias current. In conclusion, the results of this paper provided an appropriate bias current for AMB system, which assisted AMB system to obtain better dynamic performance.
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Proceedings
3rd International Conference on Mechatronics, Robotics and Automation
Part of series
Advances in Computer Science Research
Publication Date
April 2015
ISBN
978-94-62520-76-9
ISSN
2352-538X
DOI
https://doi.org/10.2991/icmra-15.2015.203How to use a DOI?
Open Access
This is an open access article distributed under the CC BY-NC license.

Cite this article

TY  - CONF
AU  - Jiong Wang
AU  - Hu Cheng
AU  - Hourao Luo
PY  - 2015/04
DA  - 2015/04
TI  - The Relationship between Active Magnetic Bearing System's Stiffness and Bias Current
BT  - 3rd International Conference on Mechatronics, Robotics and Automation
PB  - Atlantis Press
SP  - 1049
EP  - 1055
SN  - 2352-538X
UR  - https://doi.org/10.2991/icmra-15.2015.203
DO  - https://doi.org/10.2991/icmra-15.2015.203
ID  - Wang2015/04
ER  -