量程擴大器 的英文怎麼說
中文拼音 [liángchéngkuòdàqì]
量程擴大器
英文
range multiplier-
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 。It is promising to use this technology in the fabrication of oeics to solve the incompatibility problem. in laser assisted microprocessing, time is an important parameter, which has effect on component ’ s performance, so temperature distributing for small laser - processed region must be well measured
在激光誘導擴散等半導體激光微細加工過程中,溫度是一個很重要的參數,它對器件的性能有很大影響,因此微小曝光區域的溫度分佈是關鍵的工藝參數,必須得到精確的測量。The stability of electric power system has been being focused for a long time toprevent a power system from losing synchronism after sudden fault , researchers have done much work and got many accomplishments this paper applied the direct feedback linearization ( dfl ) technique on the power system , a strong nonlinear system simulation results by matlab proved this method efficiency main works and results are as follows : this paper compared some existing methods in excitation control , fast valve control and coordinated control respectively, analyzed the developments and actuality of nonlinear control research in brief, illustrated why ransient stability could be greatly improved by using the fast valve control in chapter 3 , indicated the importance of coordinated control farther this paper introduced the inverse system theory, based on which , discussed the dfl theory, pointed out which had consistency with the inverse theory, expanded the dfl theory combined the idiographic model equations , made which adapt to the model of a single machine - infinite bus power system this paper referenced abundance articles and educed a set of equations , which could describe the dynamical process of excitation and fast valve control for synchronous generators in the equations , there were several very important parameters of power system - - rotor angle ( ) , rotor speed ( ) , generator q axis voltage ( eq ) , transient voltage ( e ' q ) , active power ( pe ) , mechanical input power ( pm ) , valve opening ( ) , generator terminal voltage ( vt ) , based on the model , nonlinear coordinated controller and terminal voltage optimal controller have been designed by using the expanded dfl theory and lq optimal control theory the simulation results showed that the controller could keep power system transiently stable under the effects of a symmetrical 3 - phase short circuit fault , which achieved better postfault regulation compared with another two routine methods , one is the proportion excitation controller and proportion fast valve controller, the other is the proportion excitation controller and the optimal fast valve controller, which could exert good performance when met 1ittle disturbance either
在介紹逆系統理論的基礎上,詳細介紹了dfl理論,通過比較闡明了dfl理論其本質是逆系統方法的一類,並結合具體課題推導出的模型方程將dfl理論進行了擴展,使之適應于電力系統這個強非線性對象。通過參考大量的書籍文獻推導出一套實用的可將大型汽輪發電機勵磁與汽門綜合起來進行控制的模型方程,此模型方程涵蓋了電力系統中特別引人注目的幾個量- -轉子角、轉子轉速、發電機q軸電勢eq 、暫態電勢e ' q 、有功功率pe 、機械功率pm 、汽門開度、機端電壓vt ,在此基礎上建立了實用的電力系統簡化的數學模型,並將擴展的dfl理論應用於此模型系統,結合線性二次型最優控制理論設計出大型汽輪發電機的非線性綜合控制器及機端電壓最優控制器,通過模擬實驗與採用常規的按電壓偏差進行調節的比例式勵磁控制器+汽門比例控制及採用常規的按電壓偏差進行調節的比例式勵磁調節器和基於二次型性能指標設計的最優快控汽門(考慮發電機的飽和因素)進行了對比,證實了採用此種控制器可以有效地提高電力系統的暫態穩定性,並且在電力系統遭受小干擾時同樣具有良好的調節性能。Although the robot has powerful functions, it is limited to use widely due to specific program, running cost and investment cost etc. aiming at improving the welding efficiency and quality and extending the application fields, in this thesis the images of welding path were obtained by non - contact ccd digital imaging technique and were recognized
雖然焊接機器人功能較強,但由於專用程序、運行成本、投資成本等因素限制了機器人的大量應用。本課題為提高數控氬弧焊機的焊接效率和焊接質量,擴大焊接范圍,採用非接觸式的ccd數字成像技術,獲取焊接軌跡圖像,並對其進行識別。Based on plenty of investigations and researches, the thesis developed lots of lively, vivid, visual integrative monitor and alarm interfaces with excellent interactive quality by processing graphical edit software in the integrative monitoring and alarming system. the thesis managed to make them to be an ordinal, clear and distinct system, by programming and designing as a whole, arranging and organizing systematically
疏浚模擬訓練器集中監控報警系統以國產1750m ~ 3 h絞吸式挖泥船集中監控報警系統為模擬母型,在大量調查研究基礎上,通過對各種監控數據、報警提示適當取捨、擴充,並進行總體規劃設計,經過分門別類地編排組織,採用過程圖形編輯軟體開發了大量生動、形象、直觀、交互性強的集中監控報警界面,使之組成脈絡分明、層次清晰的有序系統。The interpolate technology just like a " ruler ", the resolving power of the " ruler " affect that the sampling points are arrayed correctly on time axis, and is determined by the multiple of the double slope integral amplifier. so it is core in the whole project. the project apply the complicated program logical device ( cpld )
內插技術的應用使得隨機采樣理論能夠得以實現,內插技術相當于測量用的「尺子」 , 「尺子」最小分辨能力決定了最後采樣點重新在時間軸上位置排列的真實可靠程度,這里尺子的最小分辨能力是由雙斜率積分時間擴展器放大倍數決定的,所以說該模擬充放電放大電路在整個方案中是個很關鍵的部分。Automatization and intelligent are the general developmental inclination in instruments and meters, the intelligent corrosion monitor based on microcomputer technique has been a new direction in corrosion monitoring. the process and tendency at home and abroad in intelligent corrosion monitor are reviewed in this paper, at the same time, an coulostatic corrosion monitor under potentiostatic control has also been introduce, which widen the application of coulostatic technology
智能化和自動化已成為當今儀器儀表發展的潮流,以計算機技術為控制內核的智能化腐蝕監測儀成為腐蝕監測重要發展方向。本文綜述了腐蝕監測儀的發展過程,並對其發展趨勢進行了分析,研製了恆電位控制下的恆電量智能化腐蝕監測儀,擴大了恆電量法在腐蝕監測中的應用范圍。First introduces hardware platform of mine monitoring system that adopt embedded pcm - 3350 to be as main controller, big - capability memorizer cf card as memories, 10. 4 inch lcd liquid crystal screen as display, pcm - 3612 as communication extend cell ; rs232 and keyboard as i / o interface to realize data dispose, storage and transport function, and so on. then introduces some basic concept and core character about embedded operating system windows ce. at the same time, the paper has a detailed introduction about platform - configured tool platform builder of mbedded operating system windows ce and a detailed narration abut the whole process of configuring the embedded operating system base on yanhua pcm - 3350, then the paper depletes the characteristic function and system framework of embedded configuration software mcgs generally and introduces the design process about configuration software of mine monitoring - control system ; at last, the paper introduces main function of rk512 communication protocol that can ensure reliable communication with controller plc of bottom machine
首先介紹了硬體平臺的搭建:採用嵌入式pcm - 3350作為主控制器;大容量的存儲器cf卡作為存儲設備;採用10 . 4寸lcd液晶屏作為顯示設備; pcm - 3612作為通信擴展單元;用rs232和鍵盤作為i o介面來實現數據的處理、存儲和傳輸等功能;然後又介紹了嵌入式操作系統windowsce的一些基本概念、核心特性,同時對嵌入式操作系統windowsce的平臺定製工具platformbuilder做了一些介紹並詳細敘述了使用platformbuilder定製基於研華pcm - 3350的windowsce操作系統的過程;接著概括敘述了可運行在windowsce上的嵌入版組態軟體mcgs的特點、功能、體系結構並詳細介紹了礦山檢測系統的組態軟體設計過程;最後介紹了能夠與下位控制器plc可靠通訊的rk512通訊協議的主要函數。On the design of the instrument software, because the computer data process system of the first and second kinds of products run in the dos environment, which is written by the language of the basic. it is proved in the dos environment that data is processed slowly, man - machine interface is n ' t friend and operation is n ' t convenient. what ' s more, the code of program written by the basic is changed easily by accident by user, which does n ' t adapt to production and commodity of the instrument. therefore, we have developed with visual c + + language a suit of data process soft system supported by windows 95 / windows 98 / windows nt in the third kind of the sample instrument. the developed software system has good reliability, friendly user interface and convenient operation
另外為了進一步擴大儀器的測量范圍,我們將第三代產品的使用擴展到對各種液體表面張力的測試,並進行kd -型樣機的製作,以供第三軍醫大學燒傷研究所作人和動物呼吸道燒傷的實驗研究。在儀器的硬體設計方面,我們力求做到結構緊湊,性能穩定,重復性好,且成本低廉。在儀器的軟體設計方面,由於第一和第二代產品的計算機數據處理系統是運行在dos環境下,用basic語言編寫的程序。The packing gland for the conventional high - pressure grouting is modified to be adaptable to the low - pressure curtain grouting ; by which the application area of the grouting method is enlarged along with improved grouting quality and shortened construction period
摘要通過對常規孔口封閉灌漿法的孔口封閉器進行改造,使孔口封閉灌漿法也適應于低壓帷幕灌裝工程,從而擴大了其適用范圍,提高了工程質量,縮短了工程工期。The soviet wanted to reduce the margin of their own uncertainty while seeking to magnify allied inhibitions against the use of nuclear weapons.
蘇聯人想要減少他們對自己前途把握不定的程度,而去尋求擴大反對使用核武器的聯合抑制力量。The development of cellular communication, multiple addressing and frequency multiplexing techniques, etc. provides a guarantee for leo satellite mobile communication. in order to improve the flexibility of communication systems, we hope that the a / d, d / a converter should be near rf - end, that is, programmable devices can implement the whole processing in middle frequency
為了使得通信系統具有較大的靈活性和可擴展性,我們希望a d 、 d a變換器盡量向射頻端靠攏,即完成射頻到中頻的下變頻后,整個中頻的處理都用可編程數字器件以及軟體來實現。In order to reach the requirement of applying for the multi - objective and multi - parameter measuring, we adopt the distributing computer controlling system which the at89c52 single chip was used as core in the system, also the circuit of signal conditioning and data acquisition and processing are all integrated in the system. we use nixie tube to fullfill the displaying function and adopt high - capacity memory to record the data of production process
同時為適應工廠要求對多目標、多參數進行監測的要求,採用了分散式計算機控制系統,該系統以at89c52單片機為核心,內部集成了信號調理、數據採集與處理、顯示等電路並擴展了大容量存儲器以保存最近幾次生產過程的檢測數據,同時還採用了rs485網路總線技術可以方便的將數據傳輸給上位控制中心。Applications can preload substantially more data into virtual memory, allowing rapid access by the 64 - bit extensions of the processor
應用程序可以預載大量數據到虛擬內存,允許處理器的64 - bit擴展快速進入In order to reduce repeat work during developing nc system software and arising efficiency, program design method of extensible command set is applied based on software - overlap thoughts, which enhances program transportability and extendability. then nc program interpreter is realized
為了降低數控系統開發過程中程序員大量的重復性勞動,提高工作效率,應用了基於軟體重用思想的程序開發方法? ?增量式程序開發方法,來實現代碼集的擴展,提高程序的可移植性,並依此開發了支持語言擴展的數控程序解釋器。And the inverter becomes smarter. during the designing, the pulse - processing ciucuit is preset which processes the feedback pulse from photoelectric encoder for close - looping the system in future. by using the circuit and quadrature mode of timer 1 in 80c196mc, incremental encoder can be embedded into the velocity regulation system more easily and the domain the inverter can be used in is enlarged too
在系統設計過程中,考慮到了變頻調速器進一步改進為閉環系統的需要,在電路中預設了光電碼盤反饋脈沖的處理電路,通過這個電路的處理,並利用80c196mc中定時計數器1的90相移計數工作方式,可大大簡化使用增量式光電碼盤時脈沖處理的復雜度,這也擴大了本文中變頻調速器的應用范圍。The integrated battery makes the measurements independent of a stationary power supply. the graduated measuring ranges extend from 0 - 200 n to 0 - 2800 kn, depending on the power transducer that is installed
根據已安裝的電源傳感器,量程可從0 - 200 n擴大到0 - 2800 kn 。對于整個電力測量系統,精度為0 . 5 %加減正負上限值的一個位數The calculated and designed objects of automatic weapons are extracted with the oop method. the calculation and design models are established and the corresponding programme codes are completed. based on the above work, the first design and calculation programme library in china is developed, which is efficient, practical, expansible and can be used in small arms industry
論文詳細討論了自動武器設計計算程序庫的結構和實現方法,對自動武器設計計算相關的大量資料進行了整理,利用面向對象的方法提取自動武器設計計算對象,建立設計計算模型,完成了自動武器設計計算程序的編碼,在國內首次開發了一套應用於輕武器行業、可擴充性強、高效、實用的自動武器設計計算程序庫,為自動武器設計的現代化提供了有效的工具。You can optionally extend what can be controlled by application parameters, such as maximum memory or processors to exploit
您可以選擇是否對應用程序參數可以控制的內容進行擴展,如可利用的最大內存或處理器數量。But the traditional internet model of c / s communication makes the streaming quality unsatisfactory because of the limitation of server ’ s performance and bandwidth. ip multicast remains just a research commodity with limited penetration into commercially deployed internet because of the problems of technology and market
但是傳統的c / s模式的流媒體服務系統由於服務器性能和服務器端的帶寬資源有限,在很大程度上阻礙了流媒體業務質量的提高和容量的擴大。分享友人