大口径天文望远镜用圆筒式弧线永磁电机及精密控制系统

开展用于大口径天文望远镜俯仰轴用圆筒式弧线永磁电机及精密控制系统的基础研究，对于加快我国大型天文望远镜的建设具有十分重要的意义。本项目提出适合于平稳驱动大口径天文望远镜俯仰轴的圆筒式弧线电机的最佳拓扑结构和物理特征；掌握其多目标的电磁优化和结构设计方法，努力提高三转子模块的三相绕组的均衡性；研究电机力矩波动抑制原理，提出降低电机定位力矩的方法；研究转子模块的双三相绕组，研究弧线电机高精度伺服控制的理论和方法；总结弧线电机驱动控制系统设计及选择控制策略的一般规律。为该类新型电机在大口径天文望远镜上的应用奠定坚实的理论和技术基础。

Fundamental research on tubular arc permanent magnet machine for pitch axis used in the large caliber astronomical telescope and its precision control system is of great significance to the fast development of the large astronomical telescope in our country. The project proposes a novel topology of tubular arc permanent magnet machine for pitch axis with excellent physical characteristics, which is suitable for the steady drive of the large caliber astronomical telescope. Multi-objective electromagnetic optimization algorithm and structure design method are researched to improve the equivalence of the three phases windings in three rotor units. The theory of suppressing the torque ripple is studied and the approach to reduce cogging torque is presented. The research on the three-phase double windings, the theory and methodology of precision servo control of arc machine are carried out. The rules to design the drive and control system of arc machine and to choose the control strategy are summarized. It lays a solid theoretical and technical foundation for the application of the new type of machine in the large caliber astronomical telescope.