500m口径球面射电望远镜柔性馈源支撑系统仿真

Simulation on flexible feed support system of five-hundred-meter aperture spherical radio telescope

为给500 m口径球面射电望远镜(Five-hundred-meter Aperture Spherical radio Telescope,FAST)提供设计优化方案,对其柔性馈源支撑系统进行1:1原型虚拟样机的全程仿真.设计整个仿真模型的控制框架和控制算法;分析系统的运动学、动力学和在干扰载荷下的控制精度.整个仿真工作主要分为对舱-索悬挂系统的动力学分析和系统其他机构、单元的控制仿真分析,前者通过有限元法实现,后者通过多体系统动力学方法和机电控制实现.通过对馈源定位的控制精度评估,可更好地为天文观测提供设计优化方案,降低硬件设计和实验的盲目性与成本,加快研究进程.

To optimize the design of Five-hundred-meter Aperture Spherical radio Telescope（FAST）,the flexible feed support system is simulated by 1：1 virtual prototype.The whole control architecture and control algorithm are designed and the virtual prototype is built.The kinematics,dynamics and control accuracy of the system under the disturbances are analyzed.The main simulation includes the dynamics analysis on cabin-cable suspension system and the control simulation analysis on other mechanisms and units.The former is implemented by finite element method,and the latter is implemented by multibody system dynamics mechatronic control.The better design optimization scheme can be achieved by the control accuracy evaluation of feed position,the blindness and cost of hardware design and experiment can be reduced,and the research process can be shorten.