Statistical analysis of turbulent distortions of optical radiation in closed loop of the adaptive optics system

2017 ◽  
Author(s):  
Vitaly V. Lavrinov ◽  
Lidia Lavrinova
Keyword(s):  
Statistical Analysis ◽  
Adaptive Optics ◽  
Optical Radiation ◽  
Closed Loop ◽  
Turbulent Distortions ◽  
Adaptive Optics System

Testing the pyramid wavefront sensor without modulation used in the closed-loop adaptive optics system

2012 ◽  
Author(s):  
Shengqian Wang ◽  
Changhui Rao ◽  
Ang Zhang ◽  
Xuejun Zhang ◽  
Kai Wei ◽  
...  
Keyword(s):  
Adaptive Optics ◽  
Closed Loop ◽  
Wavefront Sensor ◽  
Adaptive Optics System

scholarly journals Closed loop performance of a layer-oriented multi-conjugate adaptive optics system

2001 ◽  
Vol 372 (2) ◽  
pp. 710-718 ◽  
Author(s):  
E. Diolaiti ◽  
R. Ragazzoni ◽  
M. Tordi
Keyword(s):  
Adaptive Optics ◽  
Closed Loop ◽  
Adaptive Optics System

scholarly journals Reconstruction of wavefront distorted by atmospheric turbulence using a Shack-Hartman sensor

2019 ◽  
Vol 43 (4) ◽  
pp. 586-595 ◽  
Author(s):  
V.V. Lavrinov ◽  
L.N. Lavrinova
Keyword(s):  
Wave Function ◽  
Atmospheric Turbulence ◽  
Adaptive Optics ◽  
Numerical Experiments ◽  
Optical Radiation ◽  
Light Field ◽  
Random Phase ◽  
Zernike Polynomials ◽  
Turbulent Distortions ◽  
Phase Distortions

The reconstruction of a wave front containing random phase distortions of the light field is considered. The reconstruction is performed by a Hartmann method based on the approximation of the wave function by Zernike polynomials using estimates of local slopes. The slope values depend on the algorithms by which they are determined. The number of slopes is proportional to the number of focal spots recorded in the plane of the receiving device, which varies depending not only on the raster dimension, but also on the parameters of turbulence, design features of the receiving devices, as well as being restricted by the orthogonality of Zernike polynomials. Results of numerical experiments are given, which will be taken into account when creating adaptive optics systems for correcting strong turbulent distortions of the optical radiation.

Wavefront response matrix for closed-loop adaptive optics system based on non-modulation pyramid wavefront sensor

2012 ◽  
Vol 285 (12) ◽  
pp. 2814-2820
Author(s):  
Jianxin Wang ◽  
Fuzhong Bai ◽  
Yu Ning ◽  
Fei Li ◽  
Wenhan Jiang
Keyword(s):  
Adaptive Optics ◽  
Closed Loop ◽  
Wavefront Sensor ◽  
Response Matrix ◽  
Adaptive Optics System

Experimental analysis of diffraction effects from a segmented MEMS deformable mirror for a closed loop adaptive optics system

2010 ◽  
Author(s):  
Katia Shtyrkova ◽  
Loretta Arguello ◽  
Denis Oesch ◽  
Darryl J. Sanchez ◽  
Patrick Kelly ◽  
...  
Keyword(s):  
Adaptive Optics ◽  
Experimental Analysis ◽  
Closed Loop ◽  
Deformable Mirror ◽  
Diffraction Effects ◽  
Adaptive Optics System

LMI-Based Decentralized PID Controller Design With Application to the Shape Control of Magnetic Fluid Deformable Mirrors

2010 ◽  
Author(s):  
Zhizheng Wu ◽  
Azhar Iqbal ◽  
Foued Ben Amara
Keyword(s):  
Adaptive Optics ◽  
Output Feedback ◽  
Pid Controller ◽  
Control Algorithm ◽  
Closed Loop ◽  
Controller Design ◽  
Design Method ◽  
Pid Controller Design ◽  
Static Output ◽  
Adaptive Optics System

In this paper, a decentralized robust PID controller design method is proposed for multi-input multi-output systems. The system model is first decoupled in the low frequency range, and only the diagonal entries in the DC-decoupled plant model are retained. To deal with the resulting unmodeled high frequency dynamics, a decentralized robust PID controller design method is proposed, where the robust stability and transient response performance of the resulting closed loop system are formulated as a multi-objective H∞/H2 static output feedback problem. The desired parameters of the PID controller are determined by solving a static output feedback problem using linear matrix inequalities (LMIs). Finally, the performance of the proposed control algorithm is experimentally evaluated on the adaptive optics system involving a prototype magnetic fluid deformable mirror (MFDM). The experimental results illustrate the effectiveness of the proposed control algorithm for the MFDM surface shape tracking in the closed loop adaptive optics system.

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