Title :
Design and Analysis of a Halbach Magnetized Magnetic Screw for Artificial Heart
Author :
Jinghua Ji ; Zhijian Ling ; Jiabin Wang ; Wenxiang Zhao ; Guohai Liu ; Tao Zeng
Author_Institution :
Sch. of Electr. & Inf. Eng., Jiangsu Univ., Zhenjiang, China
Abstract :
This paper introduces a high-force-density linear actuator for an artificial heart, which is based on the concept of a magnetic screw-nut. The novelty of the proposed magnetic screw is adaptation of Halbach permanent-magnet (PM) array disposed helically. PMs are placed on both the screw and the nut. The configuration of the newly designed magnetic screws is presented, and its electromagnetic performances are analyzed. The proposed Halbach magnetized magnetic screw is evaluated as compared with a radially magnetized magnetic screw using the time-stepping finite-element method, verifying the advantages of the proposed structure.
Keywords :
artificial organs; cardiology; finite element analysis; magnetic actuators; permanent magnets; Halbach magnetized magnetic screw; Halbach permanent-magnet array; artificial heart; electromagnetic performances; high-force-density linear actuator; magnetic screw-nut; radially magnetized magnetic screw; time-stepping finite-element method; Fasteners; Force; Iron; Magnetic flux leakage; Magnetic resonance imaging; Saturation magnetization; Artificial heart (AH); Linear actuator; artificial heart; linear actuator; magnetic screw; permanent-magnet (PM) machine;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2015.2436691
