scholarly journals H 2 -optimal control of an adaptive optics system: part II, closed-loop controller design

2005 ◽  
Author(s):  
Karel Hinnen ◽  
Niek Doelman ◽  
Michel Verhaegen
Keyword(s):  
Optimal Control ◽  
Adaptive Optics ◽  
Closed Loop ◽  
Controller Design ◽  
System Part ◽  
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.

Controller Design for a High-Sampling-Rate Closed-Loop Adaptive Optics System with Piezo-Driven Deformable Mirror

2011 ◽  
Vol 17 (3) ◽  
pp. 290-301 ◽  
Author(s):  
Hong Song ◽  
Rufus Fraanje ◽  
Georg Schitter ◽  
Gleb Vdovin ◽  
Michel Verhaegen
Keyword(s):  
Adaptive Optics ◽  
Closed Loop ◽  
Controller Design ◽  
Sampling Rate ◽  
Deformable Mirror ◽  
High Sampling ◽  
High Sampling Rate ◽  
Adaptive Optics System

Optimal control techniques for the adaptive optics system of the LBT

2008 ◽  
Author(s):  
G. Agapito ◽  
F. Quiros-Pacheco ◽  
P. Tesi ◽  
S. Esposito ◽  
M. Xompero
Keyword(s):  
Optimal Control ◽  
Adaptive Optics ◽  
Control Techniques ◽  
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
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