High precision shape control of large deformable mirrors for adaptive optics

被引：0
|
作者：
Li, Hao A. [1 ,2 ]
Hao, Hongbo [3 ]
Zuo, Heng [1 ,2 ]
机构：
[1] Chinese Acad Sci, Nanjing Inst Astron Opt & Technol, Natl Astron Observ, Nanjing 210042, Peoples R China
[2] Chinese Acad Sci, Nanjing Inst Astron Opt & Technol, Key Lab Astron Opt & Technol, Nanjing 210042, Peoples R China
[3] State Key Lab Baiyunobo Rare Earth Resource Res &, Baotou 014000, Peoples R China
来源：
ADAPTIVE OPTICS SYSTEMS VII | 2020年 / 11448卷
基金：
中国国家自然科学基金;
关键词：
adaptive optics; voice coil actuator; control system; ADRC; LOT;
D O I：
10.1117/12.2562112
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, we propose a novel control method for high precision position control of large deformable mirrors with voice coil actuators. The controller consist of a low frequency force feedforward and a high frequency local position feedback.using force feedforward control, the dynamics of mirror can be contolled in faster settling times, and the local position controller based on the active disturbance rejection control(ADRC) algorithm guarantee the final stability of the high precision shape. we present the progress of the unit construction with a 7-actuator sub-system used to test the control method. Finally, by using experimental test, results confirm the validity of the proposed control scheme.
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页数：4
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