Affiliations: [a] School of Mechanical Engineering, Shenyang University
of Technology, Economic and Technological Development Zone, Shenyang, Liaoning,
China | [b] Department of Intelligent Mechanical Systems
Engineering, Kochi University of Technology, Kochi, Japan | Doshisha University, Kyoto, Japan | Department of Human and Information Systems, Faculty
of Engineering, Gifu University, Gifu, Japan
Correspondence:
[*]
Corresponding author: Feng Sun, School of Mechanical
Engineering, Shenyang University of Technology, No. 111, Shenliao West Road,
Economic and Technological Development Zone, Shenyang 110870, Liaoning, China.
Tel.: +86 189 0404 0100; E-mail: [email protected]
Abstract: This paper proposes an improvement method of zero suspension force
of a permanent magnetic suspension device. The zero suspension force of a
magnetic suspension device is indispensable for floating off from the adhere
position. Generally, the magnetic suspension system using permanent magnet is
difficult to realize the zero suspension force, since the permanent magnet
cannot make its attractive force zero. However, the proposed magnetic
suspension device that mainly consists of a disk-shape permanent magnet, two
"F" shape iron cores, a suspended object, and an actuator, has realized the
semi-zero power suspension and semi-zero suspension force. In the magnetic
suspension device, since there is magnetic leakage, the suspension force could
not be made exact zero. Therefore, in this paper, the zero suspension force
performance will be improved using a special shape permanent magnet. Some IEM
(Integral Element Method) analysis and experimental measurement have been
carried out, and the comparison results indicate that the zero suspension force
is decreased above 83 percent comparing with the original device in generally
using conditions. Finally, the suspension simulation and experiment results
indicate that the suspended object can be levitated robustly.
Keywords: Magnetic suspension, zero suspension force, permanent magnet, experiment
