摘  要：大口径天文望远镜不仅聚光能力增强，且分辨能力也提高。天文望远镜是光、机、电多学科交叉的系统工程，其伺服控制系统的精度对整个望远镜的系统性能起到重要的作用。该文根据天文望远镜跟踪目标的特点，采用直接驱动控制技术，开发了新型的DSP的数字控制平台。DSP数字控制器系统完成伺服驱动电机的矢量控制，该系统能够满足大口径天文望远镜高精度跟踪，并满足天文观测的精密、宽调速参数要求。试验结果表明该系统控制器稳定性好、可靠性高，其控制精度达到了预期的效果。
关键词：大口径天文望远镜；直接驱动；超低速；永磁同步电机

Abstract: Large diameter telescope strengthens the light gathering power and enhances the resolution capability.Astronomical telescope is an interdisciplinary systems engineering of optics,mechanics and electricity,its accuracy of servo control system played an important role for whole telescope system performance.According to the characteristics of astronomical telescope tracking target,this article used direct drive control technology and developed new DSP digital control platform,DSP system accomplied vector control of motor servo.This system can meet the needs of telescope high precise tracking,and satisfy astronomical observation exact observation,wide modulating velocity parameter requirement.Test results show that servo system has good stability,high reliability.The control accuracy has reached the desired effect.
Key Words:Large aperture telescope,Direct drive,Ultra low velocity,Permanent magnet synchronous machine(PMSM)