高精度快速倾斜镜位置检测与标定

发布时间：2018-06-16 21:58

  本文选题：光通信 + 复合轴　； 参考：《激光与光电子学进展》2017年09期

【摘要】：在单探测器型复合轴系统中,子轴跟踪启动后,主轴因没有适当的控制输入而处于开环状态,易导致目标脱离视场。为了避免这种情况,需要系统将精确的压电陶瓷(PZT)位置反馈给主轴。单独使用PZT振镜的开环系统时,无法对PZT振镜的倾斜角度进行较高精度的控制,若辅以检测补偿系统,则可以提高系统的控制精度。目标位置检测对于振镜控制具有重要的作用,它为开环状态下的伺服系统提供精确的控制信息,以保证目标始终在视轴的中心位置。根据PZT振镜的物理结构特点,研究单探测器型复合轴系统中振镜位置的检测方法,给出电路的设计原理,同时提出一种新的利用光学自准直仪的标定方法;给出控制公式,并重复进行多组实验,以对控制公式进行验证。实验结果表明,控制误差可以保证在20μrad以内。该研究结果为单探测器型复合轴的控制系统设计提供了基础。
[Abstract]:In a single-detector compound shaft system the spindle is in an open-loop state due to the lack of proper control input after the sub-axis tracking is started which easily leads to the target leaving the field of view. In order to avoid this situation, the precise PZT position of piezoelectric ceramics needs to be fed back to the spindle. When the open loop system of PZT vibroscope is used alone, it is impossible to control the tilting angle of the PZT vibroscope with higher precision. If the system is supplemented by the detection and compensation system, the control accuracy of the system can be improved. Target position detection plays an important role in vibration mirror control. It provides accurate control information for open loop servo system to ensure that the target is always in the center of the axis of view. According to the physical structure characteristics of PZT vibroscope, this paper studies the measuring method of the vibration mirror position in the single detector compound axis system, gives the design principle of the circuit, puts forward a new calibration method using the optical autocollimator, and gives the control formula. And repeated multiple experiments to verify the control formula. The experimental results show that the control error can be guaranteed within 20 渭 rad. The results provide a basis for the control system design of single detector composite shaft.
【作者单位】： 长春理工大学空地激光通信技术国防重点学科实验室;
【基金】：国家自然科学基金(91438204)
【分类号】：TN929.1
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本文编号：2028245