Title :
New Helical-Shape Magnetic Pole Design for Magnetic Lead Screw Enabling Structure Simplification
Author :
Kaiyuan Lu ; Yongming Xia ; Weimin Wu ; Lihui Zhang
Author_Institution :
Dept. of Energy Technol., Aalborg Univ., Aalborg, Denmark
Abstract :
Magnetic lead screw (MLS) is a new type of high performance linear actuator that is attractive for many potential applications. The main difficulty of the MLS technology lies in the manufacturing of its complicated helical-shape magnetic poles. Structure simplification is, therefore, quite essential in promoting the MLS technology. In this paper, a new approach is proposed for forming the required helical-shape magnetic poles in a much simpler way. It is demonstrated that the traditional ring-shape magnetic poles, by proper rotating or shaping, can well approximate the complicated helical-shape magnetic poles. The performance of the new structure is compared with a MLS with ideal helical-shape magnetic poles using 3-D finite-element analysis. Halbach and flux concentration designs using the new approach are introduced.
Keywords :
electromagnetic actuators; fasteners; finite element analysis; magnetic flux; 3D finite element analysis; Halbach concentration; flux concentration; helical shape magnetic pole; high performance linear actuator; magnetic lead screw; proper rotating; proper shaping; ring-shape magnetic poles; structure simplification; Arrays; Force; Lead; Magnetic flux; Perpendicular magnetic anisotropy; Rotors; Electromagnetic lead screw; structure simplification; wave energy;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2015.2438014