Development of a smaller and high-performance self-bearing motor for continuous-flow artificial heart

提出了一种新型的5自由度主动控制自轴承电机，它结合了电机、两个径向电磁轴承和一个轴向电磁轴承的功能，同时实现了更小的尺寸和更高的性能。引入了理论控制力，利用有限元法进行了磁场分析，制作了一台五自由度自悬浮电机样机，并通过实验验证了该电机的稳定悬浮性能。此外，还对外转子式五自由度自轴承电机进行了分析。制作了原型模型，实验仍在继续。认为研制小型化、高性能的五自由度自轴承电机是可行的。

A novel 5-DOF actively controlled self-bearing motor that combines the functions of a motor, two radial AMBs, and an axial AMB has been proposed and developed to achieve smaller size and higher performance simultaneously. A theoretical control forces were introduced and a prototype 5-DOF self-bearing motor was made using magnetic field analysis by finite element method Then the stable levitation with rotation was confirmed by experiments. In addition, outer rotor type 5-DOF self-bearing motor was analyzed. The prototype model was made and the experiments are still continuing. It is considered that the development of a smaller and high-performance 5-DOF self-bearing motor is highly feasible.