钢环反射式光栅编码器在转台伺服系统中的应用
发布时间：2018-08-24 18:04
【摘要】：在使用望远镜转台伺服控制系统中,精确检测转台位置和速度对实现恒星,卫星稳定跟踪非常重要,常规的增量式编码器难以满足跟踪精度要求。鉴于此,选用一种高精度的钢环反射式光栅编码器(RESM20USA413),且与ARM处理器的接口电路简单,对编码器输出信号进行了光学细分,滤波处理,并对系统进行了跟踪测试。实验结果表明:采用RESM20USA413作为直驱转台伺服系统的编码器,方位,俯仰轴的跟踪精度均在5″以下,满足系统的跟踪要求。
[Abstract]:In the servo control system of telescope turntable, it is very important to accurately detect the position and velocity of turntable to realize star tracking, and the conventional incremental encoder is difficult to meet the requirement of tracking accuracy. In view of this, a kind of high precision steel ring reflective grating encoder (RESM20USA413) is selected, and the interface circuit with ARM processor is simple. The output signal of the encoder is subdivided, filtered, and the system is tracked and tested. The experimental results show that the tracking accuracy of azimuth and pitch axis is less than 5 "using RESM20USA413 as the encoder of direct-drive turntable servo system, which meets the tracking requirements of the system.
【作者单位】： 中国科学院大学;中科院南京天文仪器研制中心;中科院南京天文仪器有限公司;
【基金】：基础研究计划项目(自然科学基金)—青年基金项目(BK20160154)
【分类号】：TH743;TN762
本文编号：2201614
[Abstract]:In the servo control system of telescope turntable, it is very important to accurately detect the position and velocity of turntable to realize star tracking, and the conventional incremental encoder is difficult to meet the requirement of tracking accuracy. In view of this, a kind of high precision steel ring reflective grating encoder (RESM20USA413) is selected, and the interface circuit with ARM processor is simple. The output signal of the encoder is subdivided, filtered, and the system is tracked and tested. The experimental results show that the tracking accuracy of azimuth and pitch axis is less than 5 "using RESM20USA413 as the encoder of direct-drive turntable servo system, which meets the tracking requirements of the system.
【作者单位】： 中国科学院大学;中科院南京天文仪器研制中心;中科院南京天文仪器有限公司;
【基金】：基础研究计划项目(自然科学基金)—青年基金项目(BK20160154)
【分类号】：TH743;TN762
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