發(fā)布時(shí)間：2018-06-02 04:23

  本文選題：光學(xué)測(cè)量 + 時(shí)柵　； 參考：《重慶理工大學(xué)》2017年碩士論文

【摘要】：隨著制造業(yè)的快速發(fā)展,我國(guó)對(duì)測(cè)試技術(shù)的要求越來(lái)越高,目前市場(chǎng)存在的主要測(cè)量?jī)x器有光柵、感應(yīng)同步器、激光干涉儀、磁柵等。這些測(cè)量?jī)x器中以光柵的應(yīng)用最為廣泛,光柵利用精密刻線(xiàn)對(duì)空間位移進(jìn)行測(cè)量,該課題小組所在實(shí)驗(yàn)室提出了時(shí)柵位移傳感器的概念,利用時(shí)鐘脈沖對(duì)空間位移進(jìn)行刻劃和測(cè)量,該位移傳感器目前已逐步在工業(yè)領(lǐng)域內(nèi)被應(yīng)用。光場(chǎng)式時(shí)柵是時(shí)柵的一個(gè)新的研究方向,前期已經(jīng)完成了透射式的光場(chǎng)式時(shí)柵的研究,證明了光場(chǎng)式時(shí)柵的可行性,現(xiàn)為了擴(kuò)大工程上的應(yīng)用,開(kāi)展反射式的光場(chǎng)式時(shí)柵的研究。光學(xué)系統(tǒng)設(shè)計(jì)和光場(chǎng)分布仿真是光場(chǎng)反射式時(shí)柵研究的一個(gè)重要組成部分,光場(chǎng)式時(shí)柵的光學(xué)系統(tǒng)影響著傳播光線(xiàn)的照度均勻性和平行性,而照度均勻性和平行性是光場(chǎng)式時(shí)柵的空間調(diào)制的重要保證.本文從這方面出發(fā),提高光場(chǎng)式時(shí)柵的測(cè)量精度,其主要的研究?jī)?nèi)容如下。(1)深入研究時(shí)柵和光場(chǎng)式時(shí)柵的測(cè)量原理,從數(shù)學(xué)模型上分析了光線(xiàn)傳播過(guò)程中的各個(gè)因素對(duì)測(cè)量的影響。(2)從光源的選擇和發(fā)光特性出發(fā),對(duì)其進(jìn)行配光設(shè)計(jì),保證光源出射光線(xiàn)的照度均勻性。(3)完成光學(xué)系統(tǒng)的設(shè)計(jì),保證光源出射光線(xiàn)的平行性,減小光線(xiàn)的發(fā)散角對(duì)光場(chǎng)式時(shí)柵光強(qiáng)調(diào)制,提高光場(chǎng)式時(shí)柵的測(cè)量精度。(4)完成光學(xué)系統(tǒng)的公差分析和制定。最后,分析光場(chǎng)式時(shí)柵的動(dòng)極板處和定極板處的光照強(qiáng)度的分布,模擬實(shí)際情況下動(dòng)定極板的空間調(diào)制效果,通過(guò)Matlab繪制出探測(cè)器上的光強(qiáng)能量和定極板移動(dòng)位移的關(guān)系圖。
[Abstract]:With the rapid development of manufacturing industry, the requirement of testing technology is more and more high in China. At present, the main measuring instruments in the market include grating, inductive synchronizer, laser interferometer, magnetic grating and so on. Among these measuring instruments, the grating is the most widely used. The grating uses precision line to measure the spatial displacement. The concept of time-grating displacement sensor has been put forward by the research group in the laboratory. The spatial displacement is characterized and measured by clock pulse. The displacement sensor has been used in the industrial field step by step. The light field time grating is a new research direction of the time grating. The study of the transmission light field time grating has been completed in the early stage, which proves the feasibility of the light field time grating. In order to expand the application of the project, The research of reflective light field time grating is carried out. The design of optical system and the simulation of light field distribution are an important part of the study of light field reflection time grating. The optical system of light field time grating affects the uniformity and parallelism of light transmission. The uniformity and parallelism of illumination are the important guarantee of spatial modulation of light field time grating. In this paper, the measurement accuracy of the light field time grating is improved. The main research contents are as follows: 1) the measurement principle of the time grating and the light field time grating is studied in depth. Based on the mathematical model, the influence of various factors in the process of light transmission on the measurement is analyzed. (2) from the selection of light source and the luminous characteristics, the light distribution design is carried out to ensure the illumination uniformity of the light source to complete the design of the optical system. The tolerance analysis and formulation of the optical system are completed by ensuring the parallelism of the light emitted from the light source, reducing the divergence angle of the light ray and modulating the intensity of the time-grating of the light-field type, and improving the measuring accuracy of the light-field-type time-grating. Finally, the distribution of light intensity at the moving pole plate and the fixed pole plate of the light field time grid is analyzed, and the spatial modulation effect of the moving pole plate is simulated. The relationship between the light intensity energy and the moving displacement of the fixed pole plate on the detector is plotted by Matlab.
【學(xué)位授予單位】：重慶理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TP212

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