Dwell time algorithm based on the optimization theory for magnetorheological finishing

2010 ◽  
Author(s):  
Yunfei Zhang ◽  
Yang Wang ◽  
Yajun Wang ◽  
Jianguo He ◽  
Fang Ji ◽  
...  
Keyword(s):  
Dwell Time ◽  
Optimization Theory ◽  
Time Algorithm ◽  
Magnetorheological Finishing

Dwell Time Algorithm for Large Aperture Optical Element in Magnetorheological Finishing

2014 ◽  
Vol 34 (5) ◽  
pp. 0522001
Author(s):  
李龙响 Li Longxiang ◽  
邓伟杰 Deng Weijie ◽  
张斌智 Zhang Binzhi ◽  
白杨 Bai Yang ◽  
郑立功 Zheng Ligong ◽  
...  
Keyword(s):  
Dwell Time ◽  
Optical Element ◽  
Time Algorithm ◽  
Magnetorheological Finishing ◽  
Large Aperture

Optics Manufacturing Using Magnetorheological Finishing

2008 ◽  
Vol 375-376 ◽  
pp. 274-277
Author(s):  
Gui Wen Kang ◽  
Fei Hu Zhang
Keyword(s):  
Dwell Time ◽  
Time Algorithm ◽  
Subsurface Damage ◽  
Numerical Control ◽  
Surface Shape ◽  
Magnetorheological Finishing ◽  
High Quality ◽  
Finishing Process ◽  
Surface Figure

Magnetorheological finishing (MRF) is a novel precision optical machining technology. Owing to its flexible finishing process, MRF can eliminate subsurface damage, smooth rms micro roughness and correct surface figure errors. The finishing process can be easily controlled by a computer. Through proper designing of numerical control, sphere and asphere optics can be machined by magnetorheological finishing with high quality. Optical sphere is machined using dwell time algorithm and surface shape 2 pt. PV has been improved from 0.17um to 0.07um.

Optimized dwell time algorithm in magnetorheological finishing

2015 ◽  
Vol 81 (5-8) ◽  
pp. 833-841 ◽  
Author(s):  
Longxiang Li ◽  
Ligong Zheng ◽  
Weijie Deng ◽  
Xu Wang ◽  
Xiaokun Wang ◽  
...  
Keyword(s):  
Dwell Time ◽  
Time Algorithm ◽  
Magnetorheological Finishing

Analysis of dwell time algorithm based on optimization theory for computer controlled optical surfacing

2011 ◽  
Vol 23 (12) ◽  
pp. 3239-3244 ◽  
Author(s):  
张云飞 Zhang Yunfei ◽  
何建国 He Jianguo ◽  
王亚军 Wang Yajun ◽  
罗丽丽 Luo Lili ◽  
吉方 Ji Fang ◽  
...  
Keyword(s):  
Dwell Time ◽  
Optimization Theory ◽  
Time Algorithm ◽  
Computer Controlled Optical Surfacing ◽  
Computer Controlled

scholarly journals An Elementary Approximation of Dwell Time Algorithm for Ultra-Precision Computer-Controlled Optical Surfacing

Micromachines ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 471
Author(s):  
Yajun Wang ◽  
Yunfei Zhang ◽  
Renke Kang ◽  
Fang Ji
Keyword(s):  
Dwell Time ◽  
Convergence Rates ◽  
Rotational Symmetry ◽  
Time Algorithm ◽  
Two Dimensions ◽  
Efficient Computation ◽  
Deconvolution Problem ◽  
Ultra Precision ◽  
Computer Controlled Optical Surfacing ◽  
Computer Controlled

The dwell time algorithm is one of the key technologies that determines the accuracy of a workpiece in the field of ultra-precision computer-controlled optical surfacing. Existing algorithms mainly consider meticulous mathematics theory and high convergence rates, making the computation process more uneven, and the flatness cannot be further improved. In this paper, a reasonable elementary approximation algorithm of dwell time is proposed on the basis of the theoretical requirement of a removal function in the subaperture polishing and single-peak rotational symmetry character of its practical distribution. Then, the algorithm is well discussed with theoretical analysis and numerical simulation in cases of one-dimension and two-dimensions. In contrast to conventional dwell time algorithms, this proposed algorithm transforms superposition and coupling features of the deconvolution problem into an elementary approximation issue of function value. Compared with the conventional methods, it has obvious advantages for improving calculation efficiency and flatness, and is of great significance for the efficient computation of large-aperture optical polishing. The flatness of φ150 mm and φ100 mm workpieces have achieved PVr150 = 0.028 λ and PVcr100 = 0.014 λ respectively.

on Large-scale dwell time algorithm for computer controlled optical surfacing

2011 ◽  
Vol 23 (12) ◽  
pp. 3207-3212
Author(s):  
罗丽丽 Luo Lili ◽  
何建国 He Jianguo ◽  
王亚军 Wang Yajun ◽  
张云飞 Zhang Yunfei ◽  
黄文 Huang Wen ◽  
...  
Keyword(s):  
Dwell Time ◽  
Large Scale ◽  
Time Algorithm ◽  
Computer Controlled Optical Surfacing ◽  
Computer Controlled

Yet one more dwell time algorithm

2017 ◽  
Author(s):  
Alexander Haberl ◽  
Rolf Rascher
Keyword(s):  
Dwell Time ◽  
Time Algorithm
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