D-FSMC在快速跟踪望远镜直接驱动系统中的应用

作者：吕晓莉1,2，王 海2 日期：2008-04-17/span> 浏览：3254 查看PDF文档

D-FSMC在快速跟踪望远镜直接驱动系统中的应用
吕晓莉1,2，王 海2
（1.中国科学院 国家天文台 南京天文光学技术研究所，江苏 南京 210042;
2.中国科学院 研究生院，北京 100049）

摘要：随着望远镜尺寸越做越大，以直接驱动代替传统的齿轮传动已经成为必然趋势。应用于执行机构的无刷直流电机的跟踪特性会随着其参数、负载及输入信号的不同而变化，传统的PID控制不能很好地适应此电机系统，通过对快速跟踪望远镜直接驱动系统的合理建模，设计了一种模糊滑模变结构（D-FSMC）控制器。仿真结果表明，该方案不仅大大避免了传统滑模变结构系统中的振颤问题，同时提高了系统的精度和鲁棒性，极大地改善了系统性能。
关键词：快速跟踪望远镜；直接驱动；无刷直流电机；模糊滑模变结构

Application of DFSMC in speediness track telescope direct drive system
LV Xiaoli1,2, WANG Hai2
(1.NanJing Institute of Astronomical Optics & Technology, National Astronomical Observatories, Chinese Academy of Sciences, NanJing 210042, China;
2.Graduate School, Chinese Academy of Sciences, Beijing 100049, China)

Abstract: Direct drive will replace gear along with telescope’s size becomes larger and larger, The track peculiarity of brushless direct current motor（BLDCM）used in executive part changes while motor parameter or motor load or input signal changes, traditional PID control method can not fits the motor system very well. Through a appropriate modeling of the system, a new distancefuzzy sliding mode control (D-FSMC) was designed. The preliminary simulation result shows that the project avoids the vibration of general sliding mode control, also improves robustness and speediness tracking properties.
Key words: speediness track telescope; direct drive; brushless direct current motor（BLDCM）; distancefuzzy sliding mode control (D-FSMC)