進平聚焦 的英文怎麼說
中文拼音 [jìnpíngjùjiāo]
進平聚焦
英文
horizontal focus-
On the basis of current investigation of both the domestic and foreign and current level of development, and contraposing difficulties and keys of autofocusing and measurement, this paper brings forward system of autofocus and measurement based on techniques of image processing of ccd. this system possesses merits of fast speed, high precision, small bulk and large dynamic range. it is able to carry out needs of fast, accurate, large range autofocusing and requests of noncontact and online measurement of workpiece face runout
本論文根據目前國內外現狀和發展水平，針對自動聚焦和端面跳動測量的關鍵點和難點，在普通光學儀器的基礎上提出了一種基於ccd圖像處理技術的圖像式自動聚焦及其測量系統，該系統具有速度快、精度高、動態范圍大、體積小等優點，實現了快速、精確、大范圍的自動聚焦和對工件端面跳動進行非接觸、在線測量的要求。According to the guidline, two nd : yag lasers have been designed and set up, one is end - pumped by lower output power ld using a selfoc micro lens, and the other is end - pumped by high output power ld using a pair of lenses are designed, and the characteristics such as output power and power stabilization of both solid - state lasers are investigated. thirdly, when an empty liquid crystal cell is inserted in the cavity of the nd : yag laser pumped by high power ld, the laser can operates in single axial mode. finally, according to the relationship between the laser output power and the longnitudinal a ld - end - pumped nd : yag laser sensor for displacement measurement has been investigated theoretically and demonstrated experimently, the results indicate that when the mean radius of pumping inside the laser cavity is far less than that of the oscilating laser mode, the exponential of the output power is a gauss function of the longitudinal positon of focused spot of ld pumping beam, both the measurement range and the sensitivity are dependent on the incident pumping power, as the incident pumping power is increased, the measurement range is enlarged and the sensitivity is improve d
本文首先介紹了ld泵浦nd ： yag激光器的發展狀況、主要特性及其應用，從四能級速率方程出發，推導了ld泵浦nd ： yag激光器的閾值、輸出功率和斜效率的表達式，並簡述了激光器的工作原理、結構型式和倍頻方法；其次，以空間相關的速率方程為基礎，提出了ld端面泵浦nd ： yag激光器的設計方法，給出了一定泵浦耦合方式下，振蕩光模尺寸、最佳輸出耦合率、泵浦光模尺寸、泵浦光焦斑位置等參數的選取依據，以此為依據，設計了自聚焦透鏡耦合小功率ld泵浦nd ： yag激光器和透鏡組耦合高功率ld泵浦nd ： yag激光器，對激光器的輸出功率和功率穩定性等特性進行了實驗研究；再次，在帶尾纖輸出的高功率ld泵浦nd ： yag激光腔內插入一隻空液晶盒，觀察到了激光器以單縱模運轉；最後，根據泵浦光焦斑端面位置對激光輸出功率的影響規律，提出了ld端面泵浦nd ： yag激光位移傳感新方法，並進行了理論和實驗研究，研究結果表明：當激光晶體內泵浦光平均光斑半徑遠小於振西安理工大學碩士學位論文蕩光束腰半徑時，激光輸出功率的自然指數與泵浦光焦斑的縱向位置成高斯變化規律，測量范圍和靈敏度依賴于泵浦功率，隨著泵浦功率的增加，測量范圍擴大，靈敏度提高，當端面泵浦功率為7 . 24w （最大輸出功率為1 . 926w ）時，激光位移傳感器的測量范圍和靈敏度分別是13 . 045mm和0 . 148mw / pm 。The main research work is shown as below : 1. summarize the focal property and aberration correcting ability of vls plane grating
主要研究內容： 1 、對平面變柵距光柵的聚焦特性和像差校正原理進行了較全面的綜述。Currently they are fabricated by lithographic process, which is very expensive and time consuming since it is a several step process. the laser direct writing system is the kind of tool that exposes the precision patterns by the micro - spot on the photosensitive material
所謂激光直寫，就是利用聚焦的激光光束，由計算機控制聲光調制器的通斷以及平臺的移動，在光刻膠上進行曝光，經過顯影后得到所需要的圖形。In this dissertation, the plasmids containing 5s promoter were transfected into cho cells and the transcription sites of rna polymerase and its transcripts were detected by fluorescence in situ hybridization to dna and rna, respectively
本實驗以中國倉鼠卵巢細胞（ cho ）為實驗材料，利用基因轉染、熒光原位雜交並結合激光共聚焦顯微鏡觀察的方法，在dna和rna水平上分別對rna聚合酶的轉錄位點和轉錄子的分佈進行了檢測。It combines the real echoes with the date simulated using the real airborne sar system parameters to analyze and validate the method. after the combined data are filtered, the improved greatest of cell - average constant - false - alarm - rate ( go - ca - cfar ) is used to judge whether moving target is detected or not. in the following, real moving target is detected and its velocity and position is gained through which it is focused well
將接收的實際場景數據與實際系統參數下模擬的典型數據相結合，分析、驗證了頻域濾波法的性能，並對濾波后的數據採用改進的選大單元平均恆虛警率（ go - ca - cfar ）方法進行處理，判斷動目標是否存在；然後對實際的動目標進行檢測，準確的估計出目標速度及位置並對目標重新聚焦成像，接下來將聚焦的動目標圖像和常規sar圖像迭加，同時得到了回到真實位置的動目標聚焦圖像和實際場景sar圖像。In this dissertation, the plasmids containing 5s promoter were transfected into hela cells, the transcription sites of rna polymerase iii and its transcripts were detected by fluorescence in situ hybridization ( fish ) to dna, rna and dna - rna, respectively
本實驗以人的hela細胞為材料，運用電擊轉染、熒光原位雜交並結合激光共聚焦顯微鏡，從dna 、 rna和dna - rna三個水平對rna聚合酶的轉錄位點及其轉錄子的分佈進行研究。Wavelet transform becomes a superior timefrequency localization method due to its mathematical property itself it has muiti - resolution characteristics. by flexing and moving a base wavelet, which must satisfy some condition, we can analyze signals in multi - scale finely, so it is called " math microscope "
它具有多分辨分析的特點，通過某個滿足一定要求的基小波的伸縮和平移等運算功能對信號進行多尺度細化分析，因而能聚焦到信號分析的任何細節，被譽為「數學顯微鏡」 。For example, they had a verbal battle with foreigners, propaganda the proposals of abrogating unequal treaties and realizing the china ' s independent and liberation, conveyed good intentions promoting the friendship between the chinese people and foreigners, etc. generally speaking, the chinese people paid close attention to diplomacy and activly participated diplomacy in the 1920s. they had made a remarkalbe achievement
第四，聚焦20年代民間的外交出訪，重點考察1926年中國實業代表團赴日訪問，及民間人士參加亞細亞民族大會、太平洋國交討論會的情況，包括他們與外國人士唇槍舌劍，宣傳中國人民廢除不平等條約、實現中國獨立與解放的主張，表達增進中外人民間友誼的良好願望等。During the research, we found the loss of auto - port tools is one of the reasons of developing unefficiently. so we focuse on the portability of the embedded system ' s developing platform and realise an auto - porting software
最後課題聚焦于嵌入式開發平臺的可移植性問題，實現了源代碼自動移植器的一個原型；在提高嵌入式系統開發過程的自動化方面進行了有益的實踐。Discussions and preliminary experiments are given for some potential applications of left - handed materials. experimental results which are in accordance with expects for the focusing of plane wave using symmetric rings and the focusing of radiate source using rings are obtained. simulation results are also obtained concerning the - like structure based backward radiate antenna and transmission line based left - handed structures
對稱環結構異向介質凹透鏡的平面波聚焦、結構異向介質的點源會聚等實驗都得到了和預期接近的初步結果；對基於結構全固態異向介質後向波介質天線微波異向介質的實驗研究和基於微帶電路結構單元的異向介質進行了計算機模擬研究，也取得了較好的結果。In order to obtain an optimal estimate of the tilt angle and angle velocity, an indirect kalman filter configuration combining a rate gyroscope sensor and an accelerometer is implemented. because of the extreme nonlinearity of the two - wheeled self - balancing robot, application feasibility of nonlinear system control strategy based on linear approximation method, exact linearization and intelligent control have been investigated. according to robustness, balancing performance and environment adaptability, robust tracking control, linear quadratic regulator and fuzzy model reference learning control are implemented to the velocity controller
針對具有強非線性的前進子系統，論證了基於近似線性化、精確線性化及智能控制的非線性系統控制策略的應用可行性，據此按照不同性能要求設計了三種前進速度控制器:漸近跟蹤魯棒調節器簡單精確，具有良好的干擾抑制能力;二次型最優跟蹤控制器，在耗能最小的條件下，大大提高系統的平衡能力;而基於動態聚焦學習的模糊模型參考學習控制則兼具平衡性能好、環境適應性強、精度高及魯棒性好的優點。All this can be a fundament for deeper investigate phased arrays. at the same time, the concentric - ring transducers are also analyzed. it can realize point focusing on its axis
本文推出了平面陣的空間聲壓分佈表達式，並研究了平面陣的幾何尺寸對聲波聚焦效果的影響，為相控陣的進一步研究提供了理論依據。Discussed the optical imaging principle of laser confocal scanning microscopic imaging system whose important character is high plane resolution and high depth resolution. analyzed the controlling technique of scanning imaging. according to the different needs for laser confocal scanning microscopy and gene - chip scanner, two kinds of scanning methods, optics scanning and object scanning, are presented
討論了激光共聚焦掃描顯微成像系統的光學原理及其成像的重要特點，即激光共聚焦掃描顯微成像系統不僅具有高的平面解析度而且具有很高的深度解析度；分析了系統的掃描成像控制技術，根據激光共聚焦掃描顯微鏡系統和基因晶元掃描儀的不同需要提出了兩種掃描方式，即光學掃描方式和物體掃描方式，指出了兩種掃描方式的優缺點，並對各自的成像非線性畸變問題進行了探討，提出了解決方案。分享友人