集中參數元件 的英文怎麼說
中文拼音 [jízhōngshēnshǔyuánjiàn]
集中參數元件
英文
lumped element-
Second, the starting and stopping behaviors under disturbed condition are analyzed and calculated by using the dynamic concentrative parameter model, which gives some advice to better prescribe refrigeration system and set theoretic foundation for carrying out automatic control of refrigeration system. third, the normal running process is analyzed and calculated by means of rational matching theory, which gives some advice on how to better understand the parameter change under steady state and the affection of inlet - parameter on evaporator. fourth, the simulation software with dynamic characteristic is designed, which can be applied to calculate thernio - parameter of cryogen, air humidity and frost thickness under different initial and boundary conditions, and to carry out dynamic simulation under conditions of dryness, wetness and frostiness, at the same time, to achieve detection and simulation at any stage from starting to stopping
本文的主要內容如下： 1 ）對翅片管蒸發器結構特點進行分析，選取適當的微元控制體，就干、濕和霜工況下對每個微元分別進行傳熱傳質分析，基於經驗關系式確定霜的有關參數，對于霜工況下的霜生長建立模型，經適當假設，運用質量守恆、能量守恆和動量守恆方程建立適合動態模擬的蒸發器數學模型，為系統模擬奠定基礎； 2 ）對蒸發在大擾動下的開、停機過程，運用動態集中參數模型進行分析和計算，為更好地描述製冷系統運行的全過程奠定基礎，同時也為製冷系統實現自動控制提供一定的理論基礎； 3 ）對蒸發器正常運行過程，運用動態分佈參數和參數間定量耦合的觀點來分析和計算，為更好地了解穩態工況下各點參數的變化情況及各入口參數對蒸發器動態特性的影響即蒸發器性能對各參數變化的敏感性； 4 ）編寫翅片管蒸發器動態特性模擬計算程序，可以計算不同邊界條件和初始條件下的製冷劑熱力參數、空氣溫濕度和霜厚度分佈場，實現對翅片管蒸發器在干、濕和霜工況下的動態模擬。Secondly, this paper illustrated the nonlinear phase dynamic theory of the aia array and the application of it to power - combining and beam - scaning technique. according to these theories, the coupling parameter of nearest neighbors was found by experiment, then the two - element and three - element aia array were designed, and the result of measurement was in agree with that of the nonlinear phase dynamic theory, and the beam - scaning of two - element array was realized by tuning the free oscillation frequency of the elements
其次，本文討論了有源集成天線陣列的非線性相位動態理論以及它在功率合成和波束掃描方面的應用，包括同步工作條件、穩定條件和相位動態方程等，通過實驗確定了陣列中相鄰單元間耦合參數，並將之運用於有源集成天線二元陣和三元陣的設計，實驗結果與理論結果吻合較好。Although there have been many application instances in the field of input / output device technology, we need an specific project and technology route aimed at an given application. in this thesis, we combine the introduction and analysis of relative technology to describe the accomplishment of a coordinate collecting device which is based on incremental rotary encoder. this device is an specific device applied to collect the corrdinate displacement of ground image ’ s three - dimensional model created by full digital photogrammetric station. cpld chip and vhdl are applied in this device to carry out the following work : phase control of the electrical pulse created by incremental rotary encoder, counting the number of electrical pulse, controling the state of signal processing circuit, exchanging data between this circuit and pci control
本文結合相關技術的介紹和分析，描述了一個基於增量式旋轉編碼器的坐標參量採集介面卡的實現，此介面卡是一種用於採集全數字攝影測量系統地面影像模型坐標位移量的專用設備，該設備採用cpld器件和vhdl語言實現增量式旋轉編碼器的脈沖信號鑒相和計數、信號處理部分的狀態控制以及和pci總線晶元ch365之間的數據交換和通信功能，同時該設備的驅動程序基於wdm模式，並且配置有結構良好的動態鏈接庫程序作為系統軟體和驅動程序之間的數據和控制交互中間介面，能夠方便地運行在windows98 / 2000 / xp操作系統平臺上，具有實時性強、工作穩定、通用性較好和性價比高等特點。This article describes a way of special ultrasonic system which monitors thermal stress in seamless welded rails. this monitoring system is a non destructive testing system, which adopts avr mcu and high - precise time chip processing as the core of it, and adopts the critically refracted longitudinal wave as the object of measuring. my studying focuses on the theory of the monitoring system, which will be listed in this arctile : according to the snell theory, the theory of motivating of critically refracted longitudinal wave is described in details, and the finite element software is used to emulate the propagating course. the formulas of calculating the pts of swr are taken from the acoustoelasticity theory, and the calculating the parameters is introduced. according to assemble materials, three kinds of ways of monitoring the pts of swr using critically refracted longitudinal wave are described, which are measuring the sound - time in changeless distance, ultrasonic critical - angle refractomery and frequency spectrum, the first way of ways is used in this experiment system. the factors, which effect the monitoring system, are assaid in some degree based
本文的研究工作重點在無縫焊接鋼軌溫度應力測量系統的理論模塊，包括根據snell原理，研究極限折射縱波的激發機理，並使用有限元軟體ansys進行模擬;根據聲彈性理論以及公式推導出計算無縫焊接鋼軌中的溫度應力的公式，並對其中參數的求解方法進行介紹;根據收集的資料，介紹了三種使用極限折射縱波測量無縫焊接鋼軌溫度應力的方法，即固定距離測量聲時法、臨界角折射法和頻譜分析法，本實驗系統使用的是第一種;根據實驗經驗以及相關資料，分析了影響極限折射縱波測量溫度應力的幾個因素，並提出了相應的解決方法;根據實驗系統的需要，獨立設計並加工出相關配套的實驗設備，包括實驗鋼塊、有機玻璃楔塊、固定件、載荷外框裝置等。In the paper, the transmission power of section constituted by the assigned branch is seen as objective function, assigning the adjustable generators both in sending system and receiving system, assigning the faults set, including the constraint conditions such as the differences between the angles of rotor and the inertia center angel of the whole system, the thermal stability of branch and node voltage, obtaining the results by using interior - point solution and line - predominant jordan
本文提出的考慮暫態穩定約束的可用輸電能力演算法是以指定線路組成的斷面的傳輸功率為目標函數，指定送端系統和受端系統中參考調節的發電機，指定故障集情況下，以發電機轉子相對全系統慣性中心的角度差、線路熱穩定、節點電壓等構成約束條件，採用內點法和行主元約當逐行消去法求解問題的最優解。In the selective calculation module, the calculations of heat exchanger design, the analysis of pipe setting patterns are combined with the database so that the selective calculation sub - system is developed. considering the factors such as uniform flowing of the fluid, smaller inner radius of the shell, the well heat exchanging effect and saving materials, the pipe setting module is developed based on the designing data. in the module for automatically generating parts and assembly drawings, the database of pattern sizes and the drawing libraries are established according to the classifications and series
在選型計算模塊中，通過換熱器設計計算、管束組件的布管方式分析、數據庫的檢索，開發了浮頭式換熱器輔助設計計運算元系統；在布管定型模塊中，按照確保殼程流體流動均勻、且換熱器殼體的內徑較小、管程殼程間換熱良好且節省材料的原則，根據設計計算參數建立了自動布管定型系統；在零部件圖和裝配圖自動生成模塊中，分級分類地開發了浮頭式換熱器所有零部件圖和裝配圖的圖紙尺寸數據庫和圖庫，運用「死圖活尺寸」的開發理念，開發了圖形自動生成與管束參數化設計的集成系統。( 3 ) study deeply the structure of fat 16 file system and the characteristic of flash disk, and develop the file management software of flash disk to manage nc files effectively according to the management idea of fat 16 file system. ( 4 ) research the module and protocol of reliable communication in serial network, which are composed of arm main control board, dsp motion control board, keyboard board, i / o control board and encoder signal collection board, and then develop communication software of the serial network. ( 5 ) study the principle of displaying char in lcd and the method of embedding font library into operating system, and research deeply the method of embedding chinese font library into os in the light of the characteristic of chinese
本論文的主要研究內容如下： （ 1 ）研究uc os -實時嵌入式操作系統在硬體平臺上的移植及其佔先式內核的任務調度原理，合理分割銑床控制系統的管理任務，根據任務的要求賦予不同的優先級和調度時間，保證任務的執行效率和實時性； （ 2 ）開發底層設備驅動程序和應用程序介面（ api ）函數，以便於進行系統應用軟體的開發； （ 3 ）深入研究fat16文件系統的結構和固態盤的硬體特性，參照fat16文件系統的管理思路，開發固態盤文件管理軟體以有效管理nc代碼文件； （ 4 ）深入研究由arm主控板、鍵盤板、 i o控制板、編碼器信號採集板等裝置組成的串口通訊網路可靠通信的模型及其通訊協議，開發串口通訊網路通信軟體； （ 5 ）研究字元的顯示原理和在操作系統中嵌入字庫的方法，在此基礎上結合漢字的特性深入研究中文字庫的嵌入方法，開發中文字庫嵌入軟體，滿足開發操作界面的信息要求； （ 6 ）深入研究三維圖形坐標變換的原理，開發實用的三維加工軌跡顯示軟體，便於操作者對零件的加工過程進行監控和診斷。Product data management subsystem can be used to manage the product data and result of design of each feature - based segment of shaft. parameterization drawing subsystem can be used to draw automatically the segment of shaft according to the input data. parameterization computing subsystem can be used to design the structure of shaft, analyze the force on the shaft, and verify the intensity and rigidity of a shaft
產品數據管理子系統的主要功能是對各個特徵軸段的產品數據信息和設計計算結果進行集中管理；參數化繪圖子系統的主要功能是在autocad環境下根據用戶交互輸入的已知條件對特徵軸段進行自動繪制；參數化計運算元系統的主要功能是根據用戶交互輸入的已知條件對軸進行結構設計、受力分析和強度、剛度校核。Then the solving procedures of these bies by the rwg functions based moment method are elaborated, and the method of modeling complex objects built of arbitrary line, surface and volume structures is developed. in order to solve realize antenna and circuit problems, methods of adding excitations and concentrated loadings with moment method are deceloped, and matrix pencil ( mp ) method is used to deembeded the s prameters of antennas and circuits from the computed current distribution. some numerical results of practical complex antenna and scattering problems are presented to illustrate the veracity and effectiveness of the method
在第一部分中，首先從電磁場的基本理論出發，基於等效原理和邊界條件以統一的方法建立了用於分析金屬、介質及金屬與介質混合結構的邊界積分方程，並歸納和比較了各類積分的適用范圍和優缺點;在此基礎上，給出了使用基於rwg函數的矩量法求解各種邊界積分方程的一般過程;研究了具有任意線、面、體組成的復雜結構的電磁建模方法，並給出了各種多面連接情況下基函數和未知量的選取方法;研究了使用矩量法分析電路、天線問題時集總元件和激勵源的處理方法，並基於矩陣束方法（ matrixpencilmethod ）提取了電路和天線問題的s參數;最後通過分析一些工程中的復雜金屬天線問題和具有「金屬與介質混合結構」的散射和天線問題驗證了方法的準確性和高效性。During deducing the transmission line equation including mutual inductance, can receives relationship between parameters of unit length four lumped components of transmission line and transmission line material. the paper contains four chapters and includes two parts. the first part includes the first chapter and the second chapter
在推導包含互感的傳輸線方程過程中，將可以得到傳輸線上單位長度四種集中元件的參數與傳輸線材料之間的關系式，這些關系式可用於實際的計算中，代替傳統的求電感、電容等的經驗公式。Based on kuroda ' s identities, parabolic lossless nonuniform transmission line ( ntl ) can be represented by the equivalent circuit consisting of lossless uniform transmission line and lumped elements
科羅達等效方法可將拋物線型無損非均勻傳輸線用均勻傳輸線及若干集中參數元件組成的等效電路表示。In this method, the mems design flow from the system level to device and process level was established and proved by the design of micro gyroscope. in the system level, the system modeling characterized by multi - discipline was simplified and solved by lumped - parameter modeling and nodal analysis method. the mems component library was constructed through analog hardware description language
首先，針對mems系統級設計的多學科交叉的特點，提出了以集中參數建模方法解決mems系統的功能建模，以節點分析法解決不同功能元件的結構實現，以混合信號硬體描述語言作為系統建模和模擬的基礎，並以此建立mems元件庫。Firstly, reliability models of different element are built in the paper. secondly, the reliability parameters of virtual series element on the main feeders are computed by series equivalent method. lastly, indices of different load points are calculated by the method of minimal cut - set
文中首先建立了不同元件的可靠性模型，其次通過串聯等值法求取各主饋線上的虛擬串聯等值元件的可靠性參數，最後應用最小割集方法計算各負荷點指標，從而得到系統各項可靠性指標。At last, the layout is verified with cadence verification tools, dracula. drc ( design rule cherker ) and lvs ( layout versus schematic ) have been done successfully, which improve the feasibility of the layout design. so the whole ic design flow, from the front end to the back end of a circuit design, is completed
接著應用無錫上華標準0 . 6umcmos工藝提供的元器件模型參數進行了電路模擬，並根據尺寸設計規則設計了整體電路的的版圖，最後運用cadence中的版圖驗證工具集dracula對電路版圖成功地進行了drc （ designrulecherker ） 、 lvs （ layoutversusschematic ）驗證，證明了電路版圖設計的可行性，完成了ic設計從前端到後端的設計流程。On the basis of analyzing the respective development and current situation at home and abroad of cad / cae / capp technology, this paper brings forward the research direction - integration and intelfectualization combining the expert system. by the analysis of the characteristic and restriction of the gear components, this paper upbuilds the characteristic model based on the restriction and actualizes data transmission and information sharing among cad. cae and capp. this paper analyzes the general principle of parameter determination and strength check about gear and researches the algorithmic of gear strength check based on the characteristic. this paper introduces expert knowledge into respective procedure of cad. cae and capp and actualizes the intellectualization in design process. strength analysis and process planning. on the basts of aforementioned research. this paper develops the cad / cae / capp integration software of gear components by means of the active - automation technology provided by autocad and vb and conducts the integration with general mechanical and shaft components integrated designing system. the application of the software indicates this system has perfect function and project applied cost
本文在分析國內外cad cae capp技術各自的發展歷史與現狀的基礎上，結合專家系統，提出了智能集成的研究方向。以齒輪類零件作為研究對象，在分析了其特徵及約束的基礎上，利用數據庫技術和圖形單元建模技術，建立了基於約束的特徵模型，實現了cad cae capp之間的數據傳輸和信息共享；分析了齒輪參數確定、強度校核的一般原則，進行基於特徵的齒輪強度校核的演算法研究；將專家知識融入在cad 、 cae 、 capp各個過程中實現了設計過程、強度分析和工藝分析的智能化。在上述研究的基礎上，利用autocad2000提供的activexautomation技術，以vb為開發工具，開發出了齒輪的cad cae capp集成軟體，並與其它機械通用件設計系統進行了集成。On the basis of analyzing application situation of cad / cae / capp technology at home and abroad, this paper brings forward the research direction ? integration and intellectualization combining the expert system. by the analysis of the characteristic of each part of worm gear, this paper upbuilds the characteristic model of worm gear based on the restriction and actualizes data transmission and information sharing among cad, cae and capp. this paper analyzes the general principle of parameter determination and strength check about worm gear and researches the algorithmic of strength check based on the characteristic about worm gear. this paper introduces expert knowledge into respective procedure of cad, cae and capp and actualizes the intellectualization in design process, strength analysis and process planning. on the basis of aforementioned research, this paper develops the cad / cae / capp integration software of gear components by means of the active - automation technology provided by autocad and vb. the applic ation of the software indicates this system has perfect function and project applied cost
本文在分析cad / cae / capp技術在國內外應用概況的基礎上，結合專家系統，提出了智能集成的研究方向。以蝸桿傳動的各個零件作為研究對象，在分析了各自特徵的基礎上，利用數據庫技術和圖形單元建模技術，建立了蝸桿傳動的特徵模型，實現了cad / cae / capp之間的數據傳輸和信息共享；分析了蝸桿傳動中參數確定、強度校核的一般原則，進行了基於特徵的蝸桿傳動強度校核的演算法研究；將專家知識融入在cad 、 cae 、 capp各個過程中實現了設計過程、強度分析和工藝分析的智能化。在上述研究的基礎上，利用autocad2000提供的activexautomation技術，以vb為開發工具，開發出了蝸桿傳動的cad / cae / capp集成軟體。分享友人