中文摘要：

提出了行波磁场驱动的大间隙磁力传动系统，通过磁场分析，以系统电磁体4个磁极状态之一的NS（电磁体左极表示为N，右极为S）为例，对电磁体的空间磁场分布进行研究，建立了系统空间磁场数学模型；通过数值计算和推导，建立了系统驱动力矩计算模型；以Matlab为平台对大间隙磁力传动系统的驱动力矩计算模型进行解析求解，并应用ANSYS软件对系统的驱动力矩进行仿真．研究结果表明：通过增加线圈匝数、线圈通电电流和永磁体磁化强度，减小电磁体和永磁体间耦合距离，将电磁体和永磁体的相对位置沿y方向两侧（左侧或右侧）置于5～10mm范围内等方法，可提高系统的驱动力矩．

英文摘要：

A large gap magnetic drives system driven by traveling wave magnetic field was brought forward. Taking the state NS （N denotes the left magnetic pole of electromagnet; S, the right magnetic pole. ）, one of the magnetic pole states of electromagnet, as an example, the space magnetic field distribution of electromagnet was studied. In addition, the mathematical model of space magnetic field was established. Using the numerical calculus and derivation, the calculation model of system driving torque was established. The driving torque calculation model of large gap magnetic drives system was solved by using the Matlab, and the system driving torque was simulated by using the Ansys software. The research result has indicated that system driving torque can be improved by increasing the number of windings of coil, increasing the electric current of the coil, decreasing the coupling distance between the electromagnet and the permanent magnet, increasing permanent magnet＇ s magnetization, and placing electromagnet and permanent magnet＇ s relative position in 5 mm-10 mm in direction（at the left or right side）.