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首页> 外文会议>Conference on Adaptive Optics and Applications II, Oct 15-16, 2002, Shanghai, China >Effects of reconstruction matrix and controller coefficients on performances of an adaptive optics system investigated by a numerical simulation
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Effects of reconstruction matrix and controller coefficients on performances of an adaptive optics system investigated by a numerical simulation

机译：数值模拟研究了重构矩阵和控制器系数对自适应光学系统性能的影响

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摘要

Phase compensation effectiveness and long time period working stability are two most important performances of an adaptive optics (AO) system. Effects of reconstruction matrix and controller coefficients on these performances are investigated by means of a pure numerical simulation in this paper. A new modified reconstruction matrix is proposed and compared with other existing matrixes in practical application. It is shown that the recently proposed reconstruction matrix can produce better phase compensation results and much better long time period working stability in an AO system. Different reconstruction matrix can greatly affect the long time period working stability under certain conditions. Under some conditions, an AO system with a reconstruction matrix can work stably in a quite long time period, but a working instability can occur in a super-long time period. It is found that the controller coefficients have even greater effect on the long time period working stability in an AO system. The controller coefficient a_1=1.00 is a marginally stable (sub-stable) condition for an AO system. When a_1<1, the long time period working stability of an AO system is much improved.
机译：相位补偿的有效性和长时间的工作稳定性是自适应光学（AO）系统的两个最重要的性能。本文通过纯数值模拟研究了重构矩阵和控制器系数对这些性能的影响。提出了一种新的改进的重构矩阵，并在实际应用中与其他现有矩阵进行了比较。结果表明，最近提出的重建矩阵可以在AO系统中产生更好的相位补偿结果和更好的长时间工作稳定性。在某些条件下，不同的重建矩阵会极大地影响长时间的工作稳定性。在某些情况下，具有重构矩阵的AO系统可以在相当长的时间段内稳定运行，但在超长时间段内可能会出现工作不稳定。发现在AO系统中，控制器系数对长时间工作稳定性的影响更大。控制器系数a_1 = 1.00是AO系统的边际稳定（亚稳定）条件。当a_1 <1时，AO系统的长时间工作稳定性大大提高。

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