Design and performance analysis of high-voltage drive system for thousand-element adaptive optics

SHAO Meng; LI Hongwen; WANG Jianli; YANG Leqiang; YAO Kainan; DENG Yongting

doi:10.37188/OPE.20233117.2493

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Design and performance analysis of high-voltage drive system for thousand-element adaptive optics

Modern Applied Optics | 更新时间：2023-09-22

- Design and performance analysis of high-voltage drive system for thousand-element adaptive optics
- Optics and Precision Engineering Vol. 31, Issue 17, Pages: 2493-2504(2023)
- 作者机构：
  
  1.中国科学院长春光学精密机械与物理研究所，吉林长春 130033
- 作者简介：
- 基金信息：
- DOI：10.37188/OPE.20233117.2493
  CLC：
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SHAO Meng, LI Hongwen, WANG Jianli, et al. Design and performance analysis of high-voltage drive system for thousand-element adaptive optics. [J]. Optics and Precision Engineering 31(17):2493-2504(2023)
DOI：

SHAO Meng, LI Hongwen, WANG Jianli, et al. Design and performance analysis of high-voltage drive system for thousand-element adaptive optics. [J]. Optics and Precision Engineering 31(17):2493-2504(2023) DOI： 10.37188/OPE.20233117.2493.

摘要

自适应光学技术可以对大气湍流造成的波前误差进行实时校正，是实现大型地基望远镜高分辨率成像的关键技术。随着望远镜口径不断增大，自适应光学系统的校正单元数达到千单元量级。首先从自动控制角度建立了自适应光学系统各电控环节的等效模型，分析了系统延时对控制环节性能的影响。然后介绍了自适应光学电控环节中高压驱动系统的设计问题，从自动控制角度分析了自适应光学系统对高压放大器闭环带宽的需求，给出了分析结果。最后报道了千单元级自适应光学高压驱动系统的集成和测试工作。实验结果表明：本文所设计的高压放大器可以实现120 V输出，,-,3 dB带宽达到5 000 Hz，所设计的高压驱动系统经过集成后，利用湍流屏等效模拟60 Hz格林伍德频率，校正后的波前残差均值为0.16,λ,，可以实现千单元级压电变形镜的校正控制。

Abstract

Adaptive optics technology can correct the wavefront error caused by atmospheric turbulence in real time and is the key technology to achieve high-resolution imaging of large ground-based telescopes. As the diameter of a telescope increases， the number of correction elements in the adaptive optics system can reach the order of one thousand. This paper first establishes the equivalent model of the control link of the adaptive optics system from the perspective of automatic control and analyzes the influence of the system delay on the performance of the control link. Then， it discusses the design of the high-voltage drive system in the control link of adaptive optics， analyzes the demand of the adaptive optics system for the closed-loop bandwidth of the high-voltage amplifier from the perspective of automatic control， and provides the analysis results. Finally， it describes the integration and test of the high-voltage drive system of the thousand-element adaptive optics system. The experimental results show that the designed high-voltage amplifier can achieve 120 V output， and the bandwidth of ,-,3 dB can reach 5 000 Hz. After the integration of the designed high-voltage drive system， the turbulence screen is used to simulate the equivalent 60 Hz Greenwood frequency， and the corrected mean residual error of the wavefront is 0.16,λ,. The designed high-voltage drive system can achieve calibration control of the thousand-element piezoelectric deformable mirror.

关键词

自适应光学望远镜自动控制高压放大器

Keywords

adaptive opticstelescopesautomatic controlshigh-voltage amplifiers

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Zhijiang Laboratory

School of Opto-Electronic Engineering， Changchun University of Science and Technology

State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences

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