超环面机电传动电磁场计算及运行特性分析

发布时间：2019-02-16 16:32

【摘要】：超环面机电传动是一种集成行星传动技术和蜗杆传动技术的新型机电传动方式,实现了动力装置与减速机构的结合,使得机电传动技术得到更大的简化。由于超环面机电传动系统具有的特殊优势,在未来发展方向上具有很广泛的应用前景。本文从超环面机电传动的结构特点、中心蜗杆电磁场计算、行星轮磁场计算、环面外定子磁场计算等方面进行了深入的研究。对中心蜗杆磁场进行了数值解析计算与Maxwell有限元仿真分析,得到了蜗杆内定子磁场的分布规律。根据电磁场基本定律和传动结构参数关系,完成了蜗杆内定子磁场的数值解析计算。采用Maxwell有限元软件对蜗杆内定子磁场进行了仿真分析,仿真结果证明了解析计算的正确性。基于等效磁荷的观点,完成了行星轮磁场的解析计算。建立了圆柱永磁齿的计算模型,推导出单个永磁齿的空间磁场表达式。采用齐次坐标变换,得出了永磁齿的坐标系和行星轮整体坐标系之间的转换矩阵。利用叠加原理,得到行星轮整体磁场表达式。建立了行星轮磁场有限元分析模型,得出了行星轮的磁通密度云图及磁感应强度矢量分布图。对环面外定子的空间螺旋结构,先对单个永磁梁进行磁场数值计算,再利用坐标转换及磁场叠加原理对整体环面外定子磁场进行数值解析计算。采用有限元软件对环面外定子进行了建模及磁场仿真分析,得到了环面外定子的磁场分布规律,验证了理论计算。利用超环面机电传动系统样机进行了电磁感应电势实验,验证了磁场理论研究的正确性,为超环面机电传动系统的实际应用提供了理论指导。
[Abstract]:Ultra-toroidal electromechanical transmission is a new type of electromechanical transmission which integrates planetary transmission technology and worm transmission technology. It realizes the combination of power device and deceleration mechanism, which makes the electromechanical transmission technology more simplified. Because of the special advantages of the ultra-toroidal electromechanical transmission system, it has a wide application prospect in the future. In this paper, the structural characteristics of the ultra-toroidal electromechanical transmission, the calculation of electromagnetic field of the center worm, the magnetic field of the planetary wheel and the magnetic field of the stator outside the torus are studied in depth. The magnetic field of the central worm is analyzed by numerical analysis and Maxwell finite element simulation, and the distribution of the stator magnetic field in the worm is obtained. According to the basic law of electromagnetic field and the relation of transmission structure parameters, the numerical analysis of stator magnetic field in worm is completed. The finite element software Maxwell is used to simulate and analyze the stator magnetic field in worm, and the simulation results show that the analytical calculation is correct. Based on the viewpoint of equivalent magnetic charge, the analytical calculation of planetary gear magnetic field has been completed. The calculation model of cylindrical permanent magnetic teeth is established, and the expression of spatial magnetic field of single permanent magnetic tooth is deduced. The transformation matrix between the coordinate system of permanent magnet teeth and the global coordinate system of planetary gear is obtained by using homogeneous coordinate transformation. By using the superposition principle, the expression of the global magnetic field of the planetary gear is obtained. The finite element analysis model of planetary gear magnetic field was established, and the magnetic flux density cloud map and magnetic induction intensity vector distribution map of planetary gear were obtained. For the spatial helical structure of the outer stator, the magnetic field of a single permanent magnet beam is numerically calculated firstly, and then the magnetic field of the stator outside the torus is calculated by using coordinate transformation and magnetic field superposition principle. The finite element software is used to model and simulate the stator outside the toroidal surface. The distribution of the magnetic field of the stator is obtained and the theoretical calculation is verified. The electromagnetic induction potential experiment is carried out by using the prototype of the ultra-toroidal electromechanical transmission system, which verifies the correctness of the magnetic field theory and provides theoretical guidance for the practical application of the ultra-toroidal electromechanical transmission system.
【学位授予单位】：天津工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TH139

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