Dwell time algorithm in ion beam figuring
WebMay 1, 2024 · Dwell time calculation for deterministic machining of X-ray mirror substrates is presented. • The main equations of new algorithm are given and described. • The inapplicability of the exact calculation method is discussed. • Experimental results of applying the described algorithm are presented. Keywords 1. Introduction
Dwell time algorithm in ion beam figuring
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WebMar 1, 2016 · In contrast to the dwell time algorithm in the conventional IBF, the variable-spot IBF adopts a new algorithm, which consists of the scan path programming and the trajectory optimization using pattern search. ... Algorithm for ion beam figuring of low-gradient mirrors. Appl. Opt., 48 (21) (2009), p. 4090, 10.1364/AO.48.004090. View in … WebMay 18, 2024 · Ion Beam Figuring (IBF), as a highly deterministic surfacing technique, has been used for ultra-precision finishing of mirrors. One crucial step that guides the IBF process is dwell time... Metrics - RIFTA: A Robust Iterative Fourier Transform-based dwell time Algorithm ...
WebApr 21, 2024 · Wang et al. provided a quantitative study on the performances of dwell time algorithms in ion-beam figuring. Han et al. [19,20] proposed a Gaussian mixture model to model experimental removal functions and provided the dwell time algorithm according to the dynamic characteristics of the machine tool. These methods are mainly based on … WebMay 18, 2024 · Ion Beam Figuring (IBF), as a highly deterministic surfacing technique, has been used for ultra-precision finishing of mirrors. One crucial step that guides the …
WebOct 21, 2008 · Dwell time algorithm in ion beam figuring. J. Wu, Z. Lu, Hong Zhang, T. Wang Materials Science Applied optics 2009 TLDR The simulations show that a perfect dwell time solution could be obtained by the revised matrix equation and initial surface error map extension with the help of the least squares QR (LSQR) algorithm. 46 PDF WebMay 14, 2015 · An optimized dwell time algorithm for magnetorheological finishing (MRF) is discussed. Based on the D-shape of the removal function of MRF, an optimized non-negative least-squares method is introduced to get dwell time from a linear matrix equation transferred from the de-convolution operation.
Web摘要:Ion beam figuring (IBF) is established for the final precision figuring of high-performance optical components, where the figuring accuracy is guaranteed by the stability of the removal function and the solution accuracy of the dwell time. In this deterministic method, the figuring process can be represented by a two-dimensional (2D ...
WebEDT (Eastern Daylight Time) UTC/GMT -4 hours. DST started. Mar 12, 2024 Forward 1 hour. DST ends. Nov 5, 2024 Back 1 hour. Difference. Same time as Roanoke Rapids. … dyi television portlandWebJul 10, 2009 · Two surface error maps were calculated to rms = 0.1 nm from rms = 130.23 nm and to rms = 0.08 nm from rms = 82.74 nm. The simulations show that a perfect … dyi suspended l shaped deskWebThe Technology of Ion Beam Figuring. Ion beam figuring (IBF) is an etching process under high vacuum conditions especially for optical substrates, like telescope mirrors. A small beam of positive charged ions is used to physically etch material from a substrate. It is also often referred to as ion beam polishing or ion beam finishing, as it is ... crystal sea fishingWebAug 20, 2024 · According to Allen and Romig [ 21 ], the development of dwell time algorithms is based on assumptions that the removal of material (sputtering yield) is … crystal seamanWebStudy on the performances of dwell time algorithms in ion beam figuring. In Optifab 2024 (Vol. 11175, p. 111750M). International Society for Optics and Photonics. [9] Wang, T., Huang, L., Kang, H. et al. RIFTA: A Robust Iterative Fourier Transform-based dwell time Algorithm for ultra-precision ion beam figuring of synchrotron mirrors. crystal sea horseWebStudy on the performances of dwell time algorithms in ion beam figuring. In Optifab 2024 (Vol. 11175, p. 111750M). International Society for Optics and Photonics. [9] Wang, T., … crystal sealesWebJan 13, 2024 · The dwell time algorithm is used to solve the deconvolution process and to ensure that the calculated dwell time not only meets the performance of machine tools, … crystal sea heaven