發(fā)布時間：2018-06-02 04:23

  本文選題：光學測量 + 時柵�。� 參考：《重慶理工大學》2017年碩士論文

【摘要】：隨著制造業(yè)的快速發(fā)展,我國對測試技術的要求越來越高,目前市場存在的主要測量儀器有光柵、感應同步器、激光干涉儀、磁柵等。這些測量儀器中以光柵的應用最為廣泛,光柵利用精密刻線對空間位移進行測量,該課題小組所在實驗室提出了時柵位移傳感器的概念,利用時鐘脈沖對空間位移進行刻劃和測量,該位移傳感器目前已逐步在工業(yè)領域內被應用。光場式時柵是時柵的一個新的研究方向,前期已經完成了透射式的光場式時柵的研究,證明了光場式時柵的可行性,現(xiàn)為了擴大工程上的應用,開展反射式的光場式時柵的研究。光學系統(tǒng)設計和光場分布仿真是光場反射式時柵研究的一個重要組成部分,光場式時柵的光學系統(tǒng)影響著傳播光線的照度均勻性和平行性,而照度均勻性和平行性是光場式時柵的空間調制的重要保證.本文從這方面出發(fā),提高光場式時柵的測量精度,其主要的研究內容如下。(1)深入研究時柵和光場式時柵的測量原理,從數學模型上分析了光線傳播過程中的各個因素對測量的影響。(2)從光源的選擇和發(fā)光特性出發(fā),對其進行配光設計,保證光源出射光線的照度均勻性。(3)完成光學系統(tǒng)的設計,保證光源出射光線的平行性,減小光線的發(fā)散角對光場式時柵光強調制,提高光場式時柵的測量精度。(4)完成光學系統(tǒng)的公差分析和制定。最后,分析光場式時柵的動極板處和定極板處的光照強度的分布,模擬實際情況下動定極板的空間調制效果,通過Matlab繪制出探測器上的光強能量和定極板移動位移的關系圖。
[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.
【學位授予單位】：重慶理工大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TP212

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