Model-based restoration using light vein for range-gated imaging systems

	Model-based restoration using light vein for range-gated imaging systems
	Wang, C. J.; T. Sun; T. F. Wang; R. Wang; J. Guo and Y. Z. Tian
	2016
发表期刊	Applied Optics
卷号	55 期号:26
摘要	The intrinsic hysteresis nonlinearity of the piezo-actuators can severely degrade the positioning accuracy of a tip-tilt mirror (TTM) in an adaptive optics system. This paper focuses on compensating this hysteresis nonlinearity by feed-forward linearization with an inverse hysteresis model. This inverse hysteresis model is based on the classical Presiach model, and the neural network (NN) is used to describe the hysteresis loop. In order to apply it in the real-time adaptive correction, an analytical nonlinear function derived from the NN is introduced to compute the inverse hysteresis model output instead of the time-consuming NN simulation process. Experimental results show that the proposed method effectively linearized the TTM behavior with the static hysteresis nonlinearity of TTM reducing from 15.6% to 1.4%. In addition, the tip-tilt tracking experiments using the integrator with and without hysteresis compensation are conducted. The wavefront tip-tilt aberration rejection ability of the TTM control system is significantly improved with the -3 dB error rejection bandwidth increasing from 46 to 62 Hz. (C) 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
文章类型	期刊
收录类别	SCI ; EI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/57218
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Wang, C. J.,T. Sun,T. F. Wang,et al. Model-based restoration using light vein for range-gated imaging systems[J]. Applied Optics,2016,55(26).
APA	Wang, C. J.,T. Sun,T. F. Wang,R. Wang,&J. Guo and Y. Z. Tian.(2016).Model-based restoration using light vein for range-gated imaging systems.Applied Optics,55(26).
MLA	Wang, C. J.,et al."Model-based restoration using light vein for range-gated imaging systems".Applied Optics 55.26(2016).

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