Design and analysis of a field modulated magnetic screw for artificial heart | Zendy

Zhijian Ling | Zendy; Jinghua Ji | Zendy; Fangqun Wang | Zendy; Fangfang Bian | Zendy

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Design and analysis of a field modulated magnetic screw for artificial heart

Author(s) -

Zhijian Ling,

Jinghua Ji,

Fangqun Wang,

Fangfang Bian

Publication year - 2017

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4975699

Subject(s) - magnet , actuator , ferromagnetism , magnetic field , finite element method , mechanical engineering , electromagnet , materials science , force density , magnetic energy , engineering , mechanics , physics , structural engineering , condensed matter physics , electrical engineering , magnetization , quantum mechanics

This paper proposes a new electromechanical energy conversion system, called Field Modulated Magnetic Screw (FMMS) as a high force density linear actuator for artificial heart. This device is based on the concept of magnetic screw and linear magnetic gear. The proposed FMMS consists of three parts with the outer and inner carrying the radially magnetized helically permanent-magnet (PM), and the intermediate having a set of helically ferromagnetic pole pieces, which modulate the magnetic fields produced by the PMs. The configuration of the newly designed FMMS is presented and its electromagnetic performances are analyzed by using the finite-element analysis, verifying the advantages of the proposed structure.

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