Real-time Model Identification for Beam Stabilization in Laser Pointing Systems
作者单位：Qian Xuesen Laboratory of Space Technology China Academy of Space Technology
会议名称：《第三十九届中国控制会议》
会议日期：2020年
学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程]
关 键 词：Parameter identification Beam stabilization Attitude transformation Kalman filter
摘 要：This paper investigates the problem of model identification in laser pointing systems, which is one of the most important issues to guarantee beam stabilization. This problem is essentially challenging in view of that misalignments always exist among individual optical components and result in uncertain modeling errors. Focusing on this problem, the structure of propagation equation of the laser beam is derived, and a filtering estimation algorithm is then proposed to identify the undetermined parameters. With this approach, a high-precision model can be estimated in real time for control laws. Finally, an illustrative example is simulated to substantiate the efficacy of the proposed approach.