Surface figure prediction and closed-loop control for novel unimorph deformable mirror integrated strain feedback layer

被引：0

作者：

Fan Z. ^{[1
,2
,3
]}

Dai Y. ^{[1
,2
,3
]}

Guan C. ^{[1
,2
,3
]}

Tie G. ^{[1
,2
,3
]}

Qi C. ^{[1
]}

机构：

[1] College of Artificial Intelligence, National University of Defense Technology, Changsha

[2] Hunan Key Laboratory of Ultra-precision Machining Technology, Changsha

[3] Laboratory of Science and Technology on Integrated Logistics Support, National University of Defense Technology, Changsha

来源：

Yi Qi Yi Biao Xue Bao/Chinese Journal of Scientific Instrument | 2018年 / 39卷 / 06期

关键词：

Adaptive optics; Closed-loop control; Hysteresis; Strain; Surface figure prediction; Unimorph deformable mirror;

D O I：

10.19650/j.cnki.cjsi.J1803079

中图分类号：

学科分类号：

摘要：

As the main device to correct optical aberrations, the unimorph or bimorph deformable mirror (DM) is widely used in adaptive optics. The Shack-Hartmann Wave-front sensor et al. obtains the surface figure through the mirror's reflected light. However, it does not directly receive the motion state of the piezoelectric ceramic, and the wave-front sensors increase the system cost. In this paper, the mapping relationship between the electrode's transverse strain and the mirror deformation is established for single-electrode unimorph deformable mirror. A single-electrode unimorph DM witch bonded on the rosette is fabricated. Deformation prediction experiments are carried out. The results show that the influence function can be predicted through integrating the feedback layer. And the fitting error is within 7.3%. The main error of the model is the nonlinear hysteresis of the piezoelectric ceramic. The PID controller is used to correct the strain feedback signal error. As a result, the hysteresis rate of mirror displacementis is reduced to 1.74%. On the other hand, the aberration of the super-continuum fiber laser beam is corrected by the unimorph DM at closed loop. Compared with the correction results with Shack-Hartmann Wave-front sensor or strain gages at open loop, the accuracy is increased to 0.79, which realizes a new mean for DMs' no wave front detection. © 2018, Science Press. All right reserved.

引用

页码：34 / 40

页数：6

共 20 条

[1]

Dai Y., Zhao L., Xiao F., Et al., Adaptive optics vision simulation and perceptual learning system based on a 35-element bimorph deformable mirror, Applied Optics, 54, 5, (2015)

[2]

Huang L., Zhou C.L., Zhao W.C., Et al., Closed-loop performance of a high precision deflectometry controlled deformable mirror (DCDM) unit for wavefront correction in adaptive optics system, Optics Communications, 393, pp. 83-88, (2017)

[3]

Ning Y., Chen B., Yu H., Et al., Decoupling algorithm of a double-layer bimorph deformable mirror: Analysis and experimental test, Applied Optics, 48, 17, pp. 3154-3159, (2009)

[4]

Pribosek J., Diaci J., Sinzinger S., Simple unimorph deformable mirrors fabricated from piezo buzzers, Journal of Micromechanics & Microengineering, 26, 5, (2016)

[5]

Rausch P., Verpoort S., Wittrock U., Unimorph deformable mirror for space telescope: Design and manufacturing, Optics Express, 23, 15, (2015)

[6]

Gerber M., Graf T., Kudryashov A., Generation of custom modes in a Nd: YAG laser with a semipassive bimorph adaptive mirror, Applied Physics B, 83, 1, pp. 43-50, (2006)

[7]

Zhou H., Optics and precision engineering research on bimorph deformable mirror and its application in adaptive optics, pp. 66-67, (2013)

[8]

Liu Y., Ma J.Q., Chen J.J., Et al., Robustness properties of hill-climbing algorithm based on Zernike modes for laser beam correction, Applied Optics, 53, 10, pp. 140-146, (2014)

[9]

Ma H.T., Liu Z.J., Xu X.J., Et al., Simultaneous adaptive control of dual deformable mirrors for full-field beam shaping with the improved stochastic parallel gradient descent algorithm, Optics Letters, 38, 3, pp. 326-328, (2013)

[10]

Verpoort S., Wittrock U., Actuator patterns for unimorph and bimorph deformable mirrors, Applied Optics, 49, 31, pp. 4937-4946, (2010)

← 1 2 →