本文選題：雙光子聚合 + AMF數(shù)據(jù)模型��； 參考：《長(zhǎng)春工業(yè)大學(xué)》2017年碩士論文

【摘要】：飛秒激光雙光子聚合(Two-Photon Polymerization,簡(jiǎn)稱(chēng)TPP)加工是一種集計(jì)算機(jī)輔助設(shè)計(jì)、輔助制造于一體的三維微納結(jié)構(gòu)加工技術(shù)。該技術(shù)能突破光的衍射極限限制制備特征尺寸小于100nm的微觀結(jié)構(gòu),可實(shí)現(xiàn)任意復(fù)雜三維微納結(jié)構(gòu)或器件的制備。至今為止,雙光子聚合已被應(yīng)用于微光學(xué)元件、微機(jī)電系統(tǒng)、微流體、超材料、生物醫(yī)療器件等的制備。三維數(shù)據(jù)模型作為T(mén)PP加工的依據(jù),是實(shí)現(xiàn)TPP制造的前提和基礎(chǔ)。當(dāng)前TPP的三維結(jié)構(gòu)模型無(wú)論是通過(guò)正向設(shè)計(jì)建模還是逆向工程重建獲取,均需要結(jié)合TPP加工工藝的具體要求和現(xiàn)有加工系統(tǒng)的約束條件進(jìn)行相應(yīng)的處理才能滿(mǎn)足TPP加工的需求。因此三維模型的處理是TPP的技術(shù)核心之一,是高精度、高效率實(shí)現(xiàn)TPP微納結(jié)構(gòu)加工的數(shù)據(jù)基礎(chǔ)和前提。為了滿(mǎn)足大面積三維微納結(jié)構(gòu)快速加工的需求,大行程氣浮運(yùn)動(dòng)平臺(tái)和二維振鏡的三維掃描系統(tǒng)逐漸被應(yīng)用,這需要與之相應(yīng)的數(shù)據(jù)接口。因此,本文針對(duì)TPP加工的AMF數(shù)據(jù)模型、AMF模型的切片方法、切片的截面輪廓擬合以及激光掃描的路徑進(jìn)行研究。論文主要研究成果如下:(1)為了實(shí)現(xiàn)對(duì)特征尺寸在微納米級(jí)的復(fù)雜三維結(jié)構(gòu)的全面、精確的幾何描述并減少數(shù)據(jù)存儲(chǔ)量,本文在一種新的疊加制造數(shù)據(jù)模型AMF(Additive Manufacturing File Format)文件格式下,通過(guò)分析AMF文件的數(shù)據(jù)結(jié)構(gòu)、模型精度、數(shù)據(jù)存儲(chǔ)量,提出了AMF曲面模型的細(xì)分算法并進(jìn)行了實(shí)例驗(yàn)證。(2)提出了基于AMF模型三角面片邊信息排序的切片算法。根據(jù)AMF數(shù)據(jù)模型特點(diǎn),剔除掉AMF文件中所有多余的三角面片的邊,之后建立剩余的每個(gè)邊與相鄰兩三角面片間的拓?fù)潢P(guān)系,并根據(jù)每條邊的左值大小對(duì)邊進(jìn)行排序,用一系列iZ(28)z的切平面與這些邊相交求交點(diǎn),得到三維結(jié)構(gòu)切片的截面輪廓。進(jìn)行了實(shí)驗(yàn)驗(yàn)證,結(jié)果表明,此方法具有較好的穩(wěn)定性和可行性,不會(huì)產(chǎn)生冗余數(shù)據(jù)并且在不確定AMF文件是否存在錯(cuò)誤情況下仍可用。(3)為了保證加工件的尺寸精度和形狀精度,對(duì)切片的截面輪廓進(jìn)行處理,根據(jù)樣條曲線(xiàn)輪廓與光柵式掃描相結(jié)合的連續(xù)掃描加工方式,對(duì)TPP加工中激光掃描的路徑規(guī)劃進(jìn)行了研究:首先對(duì)切片的截面輪廓進(jìn)行分段處理,之后以最小二乘曲線(xiàn)逼近原則對(duì)截面輪廓進(jìn)行分段NURBS曲線(xiàn)擬合;再采用光柵式掃描方式對(duì)切片截面進(jìn)行填充。最后,為了方便對(duì)數(shù)據(jù)處理的查看、把控和跟蹤�；贛atlab搭建了雙光子聚合加工中AMF模型的數(shù)據(jù)處理系統(tǒng),并對(duì)切片截面輪廓處理進(jìn)行了實(shí)例驗(yàn)證,證明了系統(tǒng)的可行性。
[Abstract]:Two-Photon Polymerization (TPPN) machining of femtosecond laser two-photon polymerization (TPP) is a kind of 3D micro / nano structure machining technology, which integrates computer aided design and manufacturing.This technique can break through the limit of diffraction limit of light to fabricate the microstructures whose characteristic size is smaller than that of 100nm, and can realize the fabrication of arbitrary complex three-dimensional microstructures or devices.So far, two-photon polymerization has been used in the fabrication of micro-optical elements, micro-electromechanical systems, micro-fluid, supermaterials, biomedical devices and so on.As the basis of TPP processing, 3D data model is the premise and foundation of TPP manufacturing.At present, the 3D structure model of TPP is obtained by forward design modeling or reverse engineering reconstruction. It is necessary to deal with the specific requirements of TPP machining process and the constraints of existing processing system to meet the needs of TPP machining.Therefore, the processing of 3D model is one of the core technologies of TPP, which is the data base and premise of high precision and high efficiency to realize TPP micro / nano structure machining.In order to meet the need of rapid machining of large area 3D micro / nano structure, the three dimensional scanning system of large stroke air floating motion platform and two dimensional vibrating mirror is gradually applied, which requires the corresponding data interface.Therefore, in this paper, the slicing method of AMF data model made by TPP, the section profile fitting and the path of laser scanning are studied.The main results of this paper are as follows: (1) in order to achieve a comprehensive and accurate geometric description of the complex 3D structure with feature size at the micro and nanometer level and reduce the data storage, this paper is based on a new superposition manufacturing data model AMF(Additive Manufacturing File format.By analyzing the data structure, model precision and data storage of AMF file, the subdivision algorithm of AMF surface model is proposed and verified by an example. (2) the slicing algorithm based on AMF model triangulation edge information sorting is proposed.According to the characteristics of AMF data model, the edges of all redundant triangles in the AMF file are eliminated, then the topological relationship between each remaining edge and the adjacent two or three corners is established, and the edges are sorted according to the left value of each edge.The intersection points between a series of iZ(28)z tangent planes and these edges are obtained, and the section profiles of 3D structural slices are obtained.The experimental results show that this method has good stability and feasibility, does not generate redundant data and can be used in the case of uncertain AMF file error.) in order to ensure the dimension accuracy and shape accuracy of the workpiece,The section profile of slice is processed, and the path planning of laser scanning in TPP machining is studied according to the continuous scanning method of spline curve contour and raster scanning. Firstly, the section contour of slice is processed in sections.Then the section profile is fitted with NURBS curve by using the least square curve approximation principle, and the section section is filled with raster scanning method.Finally, in order to facilitate the view of data processing, control and tracking.The data processing system of AMF model in two-photon polymerization machining is built based on Matlab, and an example is given to verify the feasibility of the system.
【學(xué)位授予單位】：長(zhǎng)春工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TP391.7

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