In this paper, the electromagnetic and mechanical characteristics of the improved homopolar linear synchronous motor (H-LSM) have been studied. Firstly, the influence of the ratio of the width and pitch of the rotor teeth is investigated on the magnetic field distribution and vibration traits. By establishing a simplified three-dimensional magnetic circuit model, the distribution of air gap flux density is attained. Secondly, the time and space distributions of the air gap flux density is decomposed, and the ratio of tooth width to tooth pitch with larger fundamental component is selected as the key index to design the H-LSM. Thirdly, through the modal analysis of the primary core, detailed investigation on the harmonics response is carried out, and the resonance frequency domain in the working process is clarified. Finally, 1-10th order frequency spectrum on the H-LSAM resonance is decomposed, which can provide a judgment for the fault diagnosis.

中文翻译：

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一种单极直线同步电机的电磁设计与振动分析

本文研究了改进型单极直线同步电机（H-LSM）的电磁和机械特性。首先，研究了转子齿宽与齿距比对磁场分布和振动特性的影响。通过建立简化的三维磁路模型，获得了气隙磁通密度的分布。其次，对气隙磁通密度的时空分布进行分解，选择基波分量较大的齿宽与齿距比作为设计H-LSM的关键指标。第三，通过一次铁心的模态分析，对谐波响应进行了详细考察，明确了工作过程中的谐振频域。最后，