short-circuit parameters 中文意思是什麼

short-circuit parameters 解釋
短路參數
  • short : n 蕭特〈姓氏〉。adj 1 短的；短暫的。 （opp long）。2 矮的；低的 （opp tall）。3 短期的。4 簡短的...
  • circuit : n 1 （某一范圍的）周邊一圈；巡迴，周遊；巡迴路線[區域]；迂路。2 巡迴審判（區）；巡迴律師會。3 【...
  • parameters : 編輯特徵參數
  1. The factors limiting the frequency band of the wide - band amplifier are introduced. through analyzing the effects of the intrinsic parameters and parasitical on the frequency characteristics, a method of improving fr of mosfet by using short channel device and making mosfet work at the saturation region through raising vgs is put forward ; the effects of different kinds of circuit configurations on the frequency characteristics and the junction voltage on the voltage pattern circuit, current pattern circuit and frequency characteristics are analyzed. according to the linear theory of transconductance which is applied in the bit circuit, the current pattern amplifier circuit, current transfer circuit and output circuit which consist of mosfet and the wide - band amplifier composed of them are put forward

    介紹了限制寬帶放大器頻帶寬度的因素，通過分析mosfet的本徵參數、寄生參數對頻率特性的影響，提出了採用短溝器件、使mosfet工作在飽和區、抬高柵源電壓等提高mosfet特徵頻率的方法；分析了不同電路組態對放大器頻率特性的影響、節點電壓對電壓模電路、電流模電路頻率特性的不同影響，根據應用於雙極晶體管電路的跨導線性原理，提出了採用mosfet構成的電流模放大電路、電流傳輸電路、輸出電路以及由它們所組成的寬帶放大器，獲得了良好的頻率響應。
  2. 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。
  3. A novel measurement and control system ( mcs ) used in hv flameproof switchgear has been established based on the 80c196kb single - chip microprocessor, by which electrical faults such as short circuit, over - load, over - voltage, open circuit, earth leakage and so on can be automatically distinguished and processed, and with the exception of this, the insulation degree of the double screen cables is monitored on - line. the operating condition and fault parameters can be displayed in turn with liquid crystal display

    該系統能自動判斷短路、過載、過壓、欠壓、漏電等故障，並對高壓電纜的絕緣水平進行實時監測，大屏幕液晶顯示器實現了電太原理工大學碩士學位論文網參數的輪流顯示，通過撥碼盤輸入系統各項整定參數，真正實現了保護系統數字化。
  4. It has been verified by simulation tests that the symmetric short - circuit protection can not only avoid the starting current but also achieve higher sensibility ; unbalance protection can distinguish unbalance short - circuit and loss of phase. the operation parameters of other protective functions has all reached the design requirements

    短路保護既能躲過起動電流，又有較高的靈敏度；不平衡保護，能準確區分不對稱短路和斷相故障；其它保護功能的動作指標均達到了設計要求。
  5. The calculation method of technical parameters of maximum output power, the short time power and continued power ( equivalent heating ) in electric braking are derived from analyzing the relationship of maximum regenerative power with resistance value of ground absorption equipment, model of traction power supply, train circuit and network voltage drop while performing electric braking

    通過分析列車電制動時的最大再生功率與電阻吸收裝置的電阻值、電制動時刻牽引供電系統的模型、列車電流、網壓降之間的關系，導出了列車電制動時最大輸出功率、地面電阻吸收裝置的短時功率和持續（等效發熱）功率等技術參數的計算方法。
  6. The first part of the paper is designing the testing project for grounding resistance and insulation resistance in a new way. using 16bits ad converter with programmable control amplifier replaced the way which used changing resistance to change measure range. lt is not only improved testing precision and develop the system expediently, but also reduced the area of the circuit boardwith the new way. in order to make the electric implement safety testing system have upstanding expansibility, the software and hardware of the system adopted the modularization design. adopted mcu atmegal28 as a master mcu which control mmi, realtime clock and communication with slaver mcu. atemga8 as the slaver mcu to realize testing function. so it is easy to add or reduce the testing project. the testing implement system has been developed successfully, and the comments for the system is that it has high precision, high expansibility and easy maintain. but considering the electric implement system should have intelligence and humanity abi lity. so this paper bring forward a scheme of electric equipment safety testing embedded system with speech control. after introduce the basic theory of speech recognition, the paper expatiate the characters of this system. the system is a noise conditon, not special people, small glossary, insulation word system. with these characters design the speech recognition as fellow. utilizing cross zero ratio and short energy to ensure jumping - off point and end point ; adopting mfcc as the character parameters of speech recognition ; the character parameters than be recognized by dtw. in order to ensure the credibility of this project, first realized by matlab in computer

    在介紹了語音識別的基本原理后，闡述了本系統的特點：本系統是一個噪聲環境下非特定人、小詞匯量、孤立詞的語音識別系統。根據本系統的這些特點設計了如下語音識別方案：利用過零率和短時能量相結合的方式確定語音端點；採用mel頻率倒譜系數（ mfcc ）作為語音識別的特徵參數；得到的特徵參數最後通過動態時間規整（ dtw ）的模式識別方法進行識別。為了確保本系統實現方案的可靠性，首先通過計算機利用matlab軟體來模擬，在演算法模擬實現后又進一步增加環境的復雜性：加上較大的環境噪聲、突發性的噪聲等，再通過修改參數、修改參考模板、兩級識別等各種提高語音識別精度的方法來提廣東工業大學工學碩士學位論文高識別率。
  7. Chapter three is the trial part. the test of the every technical parameters of the trial tube has been finished in company. the test and verify of the ability of the short circuit electric

    第三章為試驗部分，在公司內完成了試驗管的各項技術參數測試，並在合成迴路上進行了真空滅弧室短路電流能力開斷的試驗驗證。
  8. Finally, the headwaters of harmonic current and its harms to power system are discussed, the influences of harmonic currents to short - circuit verifying are analyzed, some parameters are gained according to the analyse on vibration spectrum of the electrodynamic stress

    最後，討論了電力系統諧波的產生原因及其危害，分析了電力諧波對短路動穩定校驗的影響，通過對含有諧波的短路電動力的頻譜分析，得到相應的動穩定校驗參數。
  9. Many protective and monitoring functions are integrated in the system, such as pilot circuit monitoring, earth - fault monitoring, short circuit protection, over - load protection, phase symmetry and phase loss monitoring, over voltage protection, under voltage protection, motor thermal monitoring and so on. all measuring results, fault states, fault parameters and error messages of six motors controlled by the sys tem are sent to the liquid crystal display module via the existing serial data connection

    該系統能自動轉換控制方式，具有漏電、短路、過載、斷相、欠壓、過壓、過熱等保護功能，通過觸摸式液晶顯示系統，不僅能顯示各路負荷的工作狀態和工作參數，而且能記憶其故障狀態和故障參數。
  10. So, the paper give a new method to examine all the four parameters ( opening voltage, load voltage, short circuit, weight ) of the alkali - manganese battery. it centralizes the battery ' s all characters in one instrument, use the battery ' s weight as it ' s capacity ' s representation

    本論文提出對堿錳電池的四參數（開路電壓、負載電壓、短路電流、電池重量）進行檢測，並對電池參數的檢測技術做了深入的分析與研究。
  11. Circuit model of synchronous machine and the quantitative process during short - circuit period are deduced. many parameters of synchronous machine except for transient time constant can be identified in a short time with the elaborately designed algorithm

    文中給出了同步機電路模型，定量分析了三相突然短路的過渡過程，所研製的計算機演算法可在較短的時間內辨識出除暫態時間常數外的同步機的諸多參數。
  12. Moreover, in order to represent the influence of temperature and irradiation to the characteristic of solar array, a physical mathematical model of solar array is established which based on short - circuit current ( isc ), open circuit voltage ( voc ), the voltage of mpp ( vm ), the current of mpp ( im ). the characteristic of solar array in varied temperature and irradiation can be established with the appropriated parameters deduced by the above model

    為了能夠反映環境溫度、日照強度對太陽電池陣列的i - v特性的影響，系統建立了基於短路電流（ i _ （ sc ） ） 、開路電壓（ v _ （ oc ） ） 、最大功率點電壓（ v _ m ）和最大功率點電流（ i _ m ）的太陽電池陣列的工程化數學物理模型，該模型可以依據現場測量的數據確定任意照度、溫度條件下的特性參數，預估太陽電池陣列在不同溫度、照度下的特性曲線。
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