Magnetic planetary gear drive
Magnetic planetary gear drive
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DOI：
10.1243/09544062jmes1441
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发表时间：
2009-06
期刊：
影响因子：
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通讯作者：
L. Xu;X. Zhu
中科院分区：
文献类型：
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作者：
L. Xu;X. Zhu
摘要本文提出了一种磁性行星齿轮传动，并介绍了其工作原理。给出了该传动的几何方程和运动学方程。推导了磁性齿轮齿的磁感应强度方程。建立了行星齿轮与太阳齿轮或冠形齿轮之间的转矩方程。给出了磁性行星传动的可用参数，研究了磁性齿轮齿的磁通密度分布。分析了行星齿轮与太阳齿轮或冠形齿轮之间的扭矩。随着齿轮间相对旋转角度的增大，磁转矩逐渐增大，达到最大值，然后减小。最大扭矩代表了驱动系统的极限承载能力。磁齿轮的极对数、齿厚和齿宽以及驱动器的速比对输出转矩有明显的影响。为了获得大的磁转矩，应选择大的齿轮齿宽、适当的极副数、适当的齿径向厚度、大的行星齿轮数和大的速比。
Abstract In this study, a magnetic planetary gear drive is proposed and its operating principle is introduced. The equations of the geometrics and kinematics for the drive are given. The equations of the magnetic induction intensity for the magnetic gear teeth are deduced. The equations of the torques between the planetary gears and sun gear or crown gear are developed. The available parameters of the magnetic planetary drive are presented and the magnetic flux density distributions of the magnetic gear teeth are investigated. The torques between the planetary gears and sun gear or crown gear are analysed. When the relative rotating angle between the gears is increased, the magnetic torque grows, gets to a maximum value, and then drops. The maximum torque represents extreme load-carrying ability of the drive system. The pole pair number, the tooth thickness and the tooth width of the magnetic gears, and the speed ratio of the drive have obvious influence on the output torques. To obtain a large magnetic torque, a large tooth width of the gear, a proper pole pair number, a proper radial thickness of the tooth, a large planetary gear number, and a large speed ratio should be chosen.