The Relationship between Active Magnetic Bearing System's Stiffness and Bias Current
Jiong Wang, Hu Cheng, Hourao Luo
Available Online April 2015.
- https://doi.org/10.2991/icmra-15.2015.203How to use a DOI?
- Active magnetic bearing; PD control; bearing stiffness; bias current
- 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.
- 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 -