Halbach同心式永磁齿轮结构优化设计研究

Research on Structural Optimization Design of Halbach Concentric Permanent Magnet Gear

摘要: 永磁齿轮作为一种新型传动机构，在风力发电以及机器人领域有很大发展前景。本文对Halbach同心式永磁齿轮进行了二维建模，使用COMSOL有限元分析软件进行了二维静态以及动态分析，得到了机构的磁力线分布图以及气隙磁密波形。针对Halbach同心式永磁齿轮耦合转矩过低的问题对机构重要几何参数进行了数值优化，并且对优化前后的气隙磁密波形，耦合扭矩进行了对比。结果表明对于几何结构的优化设计可以显著提高耦合扭矩。

Abstract: As a new type of transmission mechanism, permanent magnet gear has a great prospect in the field of wind power generation and robot. In this paper, the two-dimensional modeling of Halbach con-centric permanent magnet gear is carried out, and the two-dimensional static and dynamic analysis is carried out using COMSOL finite element analysis software. The magnetic force line distribution diagram and air gap magnetic density waveform of the mechanism are obtained. Aiming at the problem of low coupling torque of Halbach concentric permanent magnet gear, the important geo-metric parameters of the mechanism were optimized numerically, and the air gap magnetic density waveform and coupling torque before and after optimization were compared. The results show that the coupling torque can be significantly improved by optimizing the geometric structure.