指向镜控制系统的建模与设计(英文)  

Modeling and designing of pointing mirror control system

作　　者：李淑英[1] 周世椿[1] 

机构地区：[1]中国科学院上海技术物理研究所,上海200083

出　　处：《中国科学院研究生院学报》2010年第1期76-82,共7页Journal of the Graduate School of the Chinese Academy of Sciences

摘　　要：针对光电探测系统中常用的指向镜伺服系统,对其控制方法进行设计和仿真,构建了永磁同步电机的动力学模型.确立了空间矢量脉宽调制的算法,并给出仿真模型和结果.基于此系统进行了电流环、速度环、位置环的设计,采用位置前馈和重复控制器,最终得到一种易于实现、定位精度高的控制器.理论分析和仿真实验证明,该控制器能够较好地改善伺服系统的动态特性,具有调节时间短、无超调和动态响应准确快速等优点,并能有效提高系统位置控制精度,所得结论对此类伺服系统具有一定的指导意义.This paper designs and simulates a pointing mirror control system driven by permanent magnet synchronous motor （PMSM）. The mathematical model of PMSM and space vector pulse width modulation are established and the corresponding simulation results are presented. Based on the model,a high accuracy controller which consists of current loop,velocity loop,and position loop is designed and simulated. Due to the inherent system uncertainties,various disturbances can affect the system accuracy. This paper proposes a position control scheme employing a feed-forward controller and a repetitive controller. Theoretical analysis and simulation experiments show that the designed pointing mirror control system has good dynamic characteristic with a short setting time,a fast dynamic response,and little position error.

关 键 词：永磁同步电机 SVPWM 前馈控制器 重复控制器 

分 类 号：TP202[自动化与计算机技术—检测技术与自动化装置]