Miniaturized 5-DOF controlled magnetically levitated motor for pediatric VAD

2015 Fiscal Year Final Research Report

• Project/Area Number: 26889012
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Dynamics/Control
• Research Institution: Ibaraki University
• Principal Investigator: Osa Masahiro 茨城大学, 工学部, 助教 (30735105)
• Project Period (FY): 2014-08-29 – 2016-03-31
• Keywords: 磁気浮上モータ / 人工心臓 / ロータダイナミクス / ５軸制御

Outline of Final Research Achievements

A rotor dynamics simulation considering effect of fluid dynamics was carried out to design a 5-DOF controlled magnetically levitated motor for pediatric ventricular assit device (VAD). A geometric parameter, number of coil turns and pole number of permanent magnets were optimized based on a three dimensional magnetic field analysis. A miniaturized 5-degrees of freedom (5-DOF) controlled maglev motor which has an outer diameter of 22 mm and height of 33 mm was developed. Motor static suspension performances and rotating torque capacity were examined. A magnetic levitation and rotation performances were evaluated with a developed test rig. The rotor was magnetically levitated and rotated up to 4500 rpm without mechanical contact. The developed 5-DOF controlled maglev motor indicated sufficient magnetic levitation and rotation performance for use in pediatric VAD.

Free Research Field

機械力学・制御