Looze Douglas P
Department of Electrical and Computer Engineering, University of Massachusetts, Amherst, MA 01003, USA.
J Opt Soc Am A Opt Image Sci Vis. 2009 Jan;26(1):1-9. doi: 10.1364/josaa.26.000001.
This paper presents a linear-quadratic-Gaussian (LQG) design based on the equivalent discrete-time model of an adaptive optics (AO) system. The design model incorporates deformable mirror dynamics, an asynchronous wavefront sensor and zero-order hold operation, and a continuous-time model of the incident wavefront. Using the structure of the discrete-time model, the dimensions of the Riccati equations to be solved are reduced. The LQG controller is shown to improve AO system performance under several conditions.
本文提出了一种基于自适应光学（AO）系统等效离散时间模型的线性二次高斯（LQG）设计。该设计模型纳入了可变形镜动力学、异步波前传感器和零阶保持操作，以及入射波前的连续时间模型。利用离散时间模型的结构，可求解的黎卡提方程的维数得以降低。结果表明，LQG控制器在多种条件下可提高AO系统的性能。
