Microscale adaptive optics: wave-front control with a μ-mirror array and a VLSI stochastic gradient descent controller

Thomas Weyrauch; Mikhail A. Vorontsov; Thomas G. Bifano; Jay A. Hammer; Marc Cohen; Gert Cauwenberghs

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Microscale adaptive optics: wave-front control with a μ-mirror array and a VLSI stochastic gradient descent controller

机译：微型自适应光学器件：具有μ镜阵列和VLSI随机梯度下降控制器的波前控制

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The performance of adaptive systems that consist of microscale on-chip elements [microelectromechanical mirror (μ-mirror) arrays and a VLSI stochastic gradient descent microelectronic control system] is analyzed. The μ-mirror arrays with 5×5 and 6×6 actuators were driven with a control system composed of two mixed-mode VLSI chips implementing model-free beam-quality metric optimization by the stochastic parallel perturbative gradient descent technique. The adaptation rate achieved was near 6000 iterations/s. A secondary (learning) feedback loop was used to control system parameters during the adaptation process, further increasing the adaptation rate.

机译：分析了由微型芯片上元件[微机电镜（μ镜）阵列和VLSI随机梯度下降微电子控制系统]组成的自适应系统的性能。具有5×5和6×6致动器的μ镜阵列由一个控制系统驱动，该控制系统由两个混合模式VLSI芯片组成，这些芯片通过随机并行扰动梯度下降技术实现了无模型光束质量度量优化。达到的适应率接近6000次迭代/秒。次级（学习）反馈回路用于在适应过程中控制系统参数，从而进一步提高了适应率。

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《Applied optics》 |2001年第24期|共11页
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Thomas Weyrauch; Mikhail A. Vorontsov; Thomas G. Bifano; Jay A. Hammer; Marc Cohen; Gert Cauwenberghs;
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正文语种 eng
中图分类光学;
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2. Microscale adaptive optics: wave-front control with a μ-mirror array and a VLSI stochastic gradient descent controller [J] . Thomas Weyrauch, Mikhail A. Vorontsov, Thomas G. Bifano, Applied optics . 2001,第24期

机译：微型自适应光学器件：具有μ镜阵列和VLSI随机梯度下降控制器的波前控制
3. Decoupled stochastic parallel gradient descent optimization for adaptive optics: integrated approach for wave-front sensor information fusion [J] . Mikhail A. Vorontsov Journal of the Optical Society of America, A. Optics, image science, and vision . 2002,第2期

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Microscale adaptive optics: wave-front control with a μ-mirror array and a VLSI stochastic gradient descent controller

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