摘要
为了提高永磁同步电主轴电磁转矩,减小振动噪声,提出了一种楔形气隙结构。文中对楔形气隙永磁同步电主轴的电磁转矩进行了解析分析。利用有限元软件对均匀气隙和楔形气隙永磁同步电主轴模型进行了仿真分析,将以上两种气隙结构模型的电主轴转矩和径向力进行了对比,发现楔形气隙结构和均匀气隙结构的永磁同步电主轴相比电磁转矩幅值增加较大,径向力幅值显著减小。并得出楔形气隙结构对提高永磁同步电主轴转矩密度、减小振动噪声有明显的作用。
In order to improve the electromagnetic torque and reduce the vibration and noise of the permanent magnet synchronous electric spindle, a novel wedgy air-gap structure was introduced. The electromagnetic torque for the wedgy air-gap structure of electric spindle is analytically analysed. By using finite element software, two kinds of permanent magnet synchronous electric spindle models which have the uniform and the wedgy airgap structure are simulated, and the electromagnetic torque and the radial force of the two kinds of models are compared. The research shows that the wedgy air-gap structure permanent magnet syn- chronous electric spindle can produce higher electromagnetic torque and lower radial force amplitude than that of the uniform air-gap permanent magnet synchronous electric spindle. The conclusion is that the perma- nent magnet synchronous electric spindle with the wedgy air-gap structure can increase the electromagnetic torque and reduce the vibration and noise.
出处
《组合机床与自动化加工技术》
北大核心
2016年第1期17-19,共3页
Modular Machine Tool & Automatic Manufacturing Technique
基金
国家自然科学基金项目(51175350)
沈阳市科技计划项目(F15-199-1-13)
关键词
永磁同步电主轴
楔形气隙结构
电磁转矩
振动噪声
permanent magnet synchronous electric spindle
wedgy air-gap structure
electromagnetic torque
vibration and noise
