大口径天文望远镜不仅具有大口径精细观测的能力，而且还有大视场巡天的能力，开展本项目的研究对我国大口径天文望远镜的建设工作具有十分重要的战略意义。本项目针对大口径天文望远镜驱动系统设计磁场调制弧线永磁电机最佳拓扑结构；确定合理的电机尺寸参数、极槽配合、永磁体材料及用量、定子模块数量选择，定子绕组排布方式、不同定子模块排列等；考虑平衡损耗、温升和电磁性能等情况，采用多物理场仿真分析和多目标优化方法，探究电机各部分最优尺寸；寻求适合于该种新型弧线电机的驱动控制方法，实现弧线电机低速、大转矩和高可靠运行，项目的实施可为我国正在规划建造12米的大口径天文望远镜奠定理论和技术基础。

Large caliber astronomical telescope not only has the ability of large caliber fine observation, but also has the ability of large field of view sky survey. The research of this project is of great strategic significance for the construction of large caliber astronomical telescope in China. In this project, the optimal topological structure of the field modulated arc permanent magnet motor is designed for the drive system of the large caliber astronomical telescope. The reasonable motor size parameters, pole slot coordination, permanent magnet materials and dosage, stator module number selection, stator winding arrangement, different stator module arrangement, etc. are determined. Multi physical field simulation analysis and the multi-objective optimization method are adopted to explore the optimal size of each part of the motor considering the balance loss, temperature rise and electromagnetic performance. Suitable driving control methods are researched for the new arc motor to achieve the low-speed, large torque and high reliable operation of the arc motor. The implementation of the project can lay a theoretical and technical foundation for the planning and construction of 12m large caliber astronomical telescope in China.