第19卷第4期 2011年4月
文章编号
1004-924X(2011)04-079708
光学精密工程
Optics and Precision Engineering
Vol.19No. 4
Apr.2011
五相混合式步进电动机在空间扫描驱动机构中的应用
李先峰，颜翔，于平
（中国科学院长春光学精密机械与物理研究所，吉林长春130033）
摘要：介绍了采用步进电动机、谱波减速器和绝对式编码器构成的扫描镜驱动机构进行成像光谱仪运动补偿的方案。说明了选用五相混合式步进电动机的合理性，研究了五相混合式步进电动机在该应用中的特殊要求，驱动技术和控制实现方法。首先，指出了扫描镜和相应驱动方案对步进电动机的特殊要求。接着，针对扫描镜低速运动补偿和高速运行回归初始位置两种工况，提出了一种基于隔相五边形绕组联结方式的新型驱动方法，即调频调压结合恒频变脉宽调制(PWM)的方法，重点分析了该驱动方式对扫描机构运行性能的影响。最后，利用相关测试设备和相应方法对扫描镜的运行精度进行了实验测量。结果表明扫描镜在以0.1～0.5(")/s低速进行勾速运行和跟踪给定运动补偿曲线运行两
种情况下，角速度的均方根误差均<5.5%，基本满足般成像光谱仪对扫描机构的工程应用要求。关键调：空间扫描驱动机构；成像光谱仅；运动补偿；五相混合式步进电动机
中图分类号：TP73;TM383.6
文献标识码：A
doi;10. 3788/OPE, 20111904, 0797
Applicationoffive-phasehybridstepping motortospatialscanningdrivesystem
LI Xian-feng,YANChang-xiang,YUPing
(ChangchunInstituteof Optics，FineMechanicsand Physics， ChineseAcademy of Sciences,Changchun 130033,China)
Abstract: A scheme for the motion compensation of imaging spectrometers by using a scanning mirror drive system consisting of a step motor,a harmonic reducer and a obsolute encoder was introduced. The rationality of selected five-phase hybrid stepping motor in the system was illustrated, On the par ticularity of the five-phase hybrid stepping motor, its drive technology and control methods were stud-ied. Firstly, the special requirements of the scanning mirror and the drive method for step motor were pointed out. Then, for the two operating conditions which scanning mirror ran in low-speed and in high-speed to the initial position, a new drive method based on the new pentagon winding connection was proposed. Furthermore, the influence of the drive method on the enhancing performation of scan-ning system was analyzed. Finally, the related equipment and appropriate measuring methods were used to achieve the precision of scanning mirror motion. Obtained results show that the Root Mean Square Error(RMSE) of angularveleityis less than 5.5% in scanning mirror at low speed of o.1~0.5(a)/s in uniform speed motion and given tracking compensation curves.The imaging spectrometer can
收稿日期：2010-04-23；修订日期：2010-09-13
基金项目：国防预研基金资助项目（No.O5001SA050）