正序功率 的英文怎麼說

中文拼音 [zhēngxùgōnglǜ]
正序功率 英文
positive sequence power
  • 正 : 正名詞（正月） the first month of the lunar year; the first moon
  • 功 : 名詞1 （功勞） exploit; merit; meritorious service [deed]: 戰功 military exploits; 立功 render me...
  • 率 : 率名詞（比值） rate; ratio; proportion
  1. Disigning coolant channel on the firebox of liquid rocket engine to loxodrome ( equal - angle helix ) groove can improve firebox coolant capability greatly. because the width dimension of loxodrome groove is narrow and the depth is deep, some machining methods are incapable, such as end - milling or electrochemistry. according to the peculiarities, a cnc disk - cutter - milling method which is composed of five motion axes with four simultaneously interpolated ones is researched. because most firebox generatrix is composed of complex curves, it is very difficult to get cnc cutting program with manual means. in order to deal with the problem, the loxodrome mathematics model is studied, and an auto - programming software system is developed. the software system can generate cnc cutting program of loxodrome on many kinds of turned surface. the constriction - distension segment of firebox is the most representative workpiece. the sharp changing of its generatrix slope makes loxodrome milling difficult. with the theory analyzing and practice cutting experiment, some applied techniques, which include milling mode and direction, choosing cutter diameter and cutting start point setting, are developed. adopting the technology above, tens regular workpiece have been manufacturing. the two - year manufacture practice has confirmed the validity and feasibility of developed loxodrome coolant channel milling method. the developed technology is also worth to be referenced to other similar workpiece

    將液體火箭發動機燃燒室的冷卻通道設計為斜航線（等傾角螺旋線）槽形，可以大幅度改善燃燒室的冷卻性能.斜航線冷卻槽的槽寬尺寸較小而槽深尺寸較大，所以無法使用棒銑刀銑削、電化學等加工方式.針對這些特點，提出了五軸控制、四軸聯動的數控片銑刀銑削加工方法.由於燃燒室外表面的母線輪廓復雜，手工編制數控加工程序難度大.為了解決數控加工程序的編制問題，研究了斜航線的數學模型，開發了自動編程軟體系統.使用該系統，可以生成多種母線輪廓回轉體外表面上的斜航線數控加工程序.燃燒室收斂-擴張段的母線斜率變化大，加工難度大，是斜航線冷卻通道加工的最典型工件.經過理論分析和實際切削實驗，研究了針對該類型工件的片銑刀直徑選擇、銑削方式和方向、刀具調整和起刀點的設置等多項實際的加工方案.採用上述的一系列技術，已經成功地加工了數十個合格工件.經過兩年多的實際生產過程應用，驗證了所開發的斜航線冷卻通道加工方法的正確性和可行性.這些加工技術的研製成功，對其他相似類型零件的加工亦具有參考意義
  2. This paper focuses on the control strategies to improve the performance of the three - phase ac - dc pwm voltage - source - converters ( vsr ) under unbalanced power supply. the problems such as negative sequences current, voltage and current harmonics and un - constant ( un - smooth ) power flow from ac to dc side are discussed in this paper. the analytical solutions for negative sequence current and harmonic current elimination are obtained by fully feed - forward of negative sequence voltage and producing a non - harmonic current command of the inner - loop

    電網不平衡時，基於電網平衡為約束條件設計的三相vsr將出現不正常運行狀態，比如三相vsr交流電流中出現負序分量，使交流電流嚴重不對稱；直流電壓和交流電流中出現非特徵諧波分量，使直流電壓和交流電流波形發生嚴重畸變；三相vsr從電網吸收不平衡的瞬時功率等一系列問題。
  3. This paper describes mainly system functions, measuring methods, circuit design, software program and errors analysis of a new type of measuring instrument. this instrument can measure and monitor electric parameters in single - phase circuits, three - phase ( three - wire or four - wire ) circuits. this system can be applied to electric devices and power plants, transformer substations with harmonic pollution. it can measure current, voltage, power, energy, frequence, power factor etc. it also can detect load quality, phase sequence, alarm, display and print results, as well as detect and dispose negative power

    該儀器適用於含有諧波污染情況下的機電設備現場、發電廠、供電局、企業變電所現場，可用來測量電流、電壓、有功功率、無功功率、視在功率、有功電能、無功電能、視在電能以及頻率和功率因數等電參數，並具有負載性質（感性、容性）判別，正、逆相序判別指示功能；超限報警功能；列印記錄功能和負功檢測及處理功能。
  4. Now the affect and the measure of hypo _ harmonics is in the research. the influence of negative sequence is almost eliminated along with the enlargement of the system ' s capacity and the alternate connection of traction substations. the fixed parallel compensate equipment applied in traction substations consist of a constant capacitor and a constant inductance, so its output is constant

    負序電流的問題已經因系統容量的增大、牽引變電所採用輪換接線方式而基本解決，電力部門實行的「反轉正計」 ，使採用對無功功率固定補償方式由於牽引負荷變化頻繁而出現補償容量不足或過補償現象，難以達到滿意效果。
  5. In order to improve the behavior of transformer protection that is incomplete at present in distinguishing magnetizing inrush current from fault current, the paper puts forward a kind of new principle of transformer differential protection after analyzing the characteristic of magnetizing inrush and active power consume of transformers. this protection uses differential protection based on positive sequence active power as a criterion to discriminate internal faults from magnetizing inrush, and ratio restraint differential current protection as a signal to touch off the protection

    針對當前電力系統中變壓器保護由於勵磁涌流鑒別理論不完善而導致的誤動率相對較高的問題，論文在分析了變壓器勵磁涌流特性和有功損耗的基礎上，提出了用變壓器正序有功功率差動作為區別勵磁涌流和故障電流的判據，並以成熟的比率制動差流保護作為內外部故障判據的變壓器主保護。
  6. On the analysis of the theory of instantaneous reactive power, the paper brings forward a new harmonic detection method based on multiple frequency transform. the detection theory of positive sequence harmonic and negative sequence harmonic is respectively proved in detail. the correlative concepts are defined and the simulation validates the feasibility of this method

    本文在分析瞬時無功功率理論的基礎上，提出了一種基於倍頻旋轉變換的諧波測量方法，分別針對正序和負序分量，從理論上證明了該方法能分離出單個的諧波，給出了相關量的定義，最後通過模擬驗證了該方法的有效性。
  7. The result of long - term operation shows that the computer control system is practical and effective, it can run in the optimal state within a long duration to fully realize data collection and process, remote data transmission and vfvs constant injection control of pumps. it speeds up the automatic procedures of the seawater treatment process, really realizes the unmanned working, decreases the physical intensity to a large extent, improves the management, enhances the management level, avoids equipment wear down as much as possible, makes the seawater treatment efficient and lessens the cost of production

    長期的運行結果表明，該計算機控制系統的實施切實有效，既成功實現了對被檢測參數的數據採集與處理、遠傳以及注水泵機組的變頻調速恆壓注水控制，又提高了系統的自動化程序，真正實現了無人值班作業，在很大程度上降低了工作人員的勞動強度，極大的改善了現場的管理狀況，提高了生產管理水平，且有效避免了設備損耗，提高了水處理效率，降低了生產成本。
  8. The hardware circuit design include : industrial control computer configuration, selection of industrial control board type, design of the power supply and monitoring interface circuit, design of signal processing interface circuit ( the constant current source circuit, the time base signal processing circuit, the processing circuit for the signal to be measured ), design of panel control circuit, design of the system self - checking circuit, and etc. the program flow hart include : main program flow chart, system boot - strap self - checking program flow chart, manual static testing program flow chart, semiautomatic static testing program flow chart, automatic static testing program flow chart, dynamic testing program flow chart, transient testing program flow chart, source voltage and current monitor program flow chart, investigate function testing program flow chart, and etc. the measure system offers six working power supplies, the signal of time base, the signal of constant current source, sine wave signal and step to leap signal, and measures the frequency of the output pulse signal of the wide range pulse convert circuit accurately under three kinds of different test state ( static form, dynamic form and transient form )

    硬體電路設計包括：工控機配置、工控板卡選型、產品電源及監控介面電路設計、信號處理介面電路（恆流源電路、時基信號處理電路、被測信號處理電路）設計、面板控制電路設計、系統自檢電路設計等。程序流程圖包括：主程序流程圖、系統開機自檢程序流程圖、手動靜態測試程序流程圖、半自動靜態測試程序流程圖、自動靜態測試程序流程圖、動態測試程序流程圖、暫態測試程序流程圖、電源電壓和電流監控程序流程圖、研究功能測試程序流程圖等。測試系統提供六路工作電源、時基信號、恆流源信號、正弦波信號和階躍信號，並對三種不同測試狀態（靜態、動態、暫態）下大量程脈沖變換電路輸出脈沖信號的頻率進行精確測量。
  9. Through the i 、 q component of ipix radar sea clutter data " s histogram analyses and by skewness and kurtosis computed, it is been shown that sea clutter amplitude is not rayleigh distribution ; through the comparison of amplitude histogram and distributed models with the same parameters, it is been shown that hh polarization clutter is lognormal distribution, whereas vv polarization is k - distribution ; at the same time the correlation function and power spectrum density are been analyzed, at last the correlation compound k - distribution stochastic sequences whose covariance matrix is been given are been generated through sirp algorithm

    文中先介紹了海雜波幅度的有關模型，通過對ipix雷達海雜波數據的i 、 q分量的直方圖以及傾斜度和峰度進行了分析和計算，證明了海雜波幅度不服從瑞利分佈;使用幅度直方圖和相同參數下的各種分佈模型進行比較，得出hh極化符合對數正態分佈，而vv極化服從k -分佈的結論;同時對海雜波的相關函數和功率譜進行了分析，最後使用sirp演算法產生了給定協方差矩陣的相關復合k -分佈隨機序列。
  10. On the basis of investgation on the related literature of electronic speed governor at home and abroad, this proper control parameters are obtained through the experimental research of the pid digital control parameters with the orthogonality method and through the analysis of the speed change of gasoline engine rev. the electronic speed governor designed hereby performs its controlling fuction through programs, the stable rev and static timing rate of which are also set and controlled by software, has, therefore large universality and function flexibility. so for different types of gasoline engines, the obtainment of relevant parameters and the designing of relevant programs suffice to realize the control functions of the electronic speed governor

    本文在分析研究國內外有關電子調速器的基礎分析方法及其研究狀況的基礎上，採用pid數字控制，並用正交試驗方法對pid數字控制的控制參數進行試驗研究，得到了合適的控制參數。所設計的電子調速器是靠控制軟體來實現調節和控制功能，穩定轉速、穩定調速率等都可以進行程序設定控制，具有很強的通用性和功能擴展能力。對不同型號的汽油機，只要經試驗取得合適的控制參數，編制出相應的控製程序，就可以使用此電子調速器進行轉速控制。
  11. Then the power spectrum was programmed to satisfy the researcher " needs. and the actual use proved that the power spectrum of cerebral infarction patient was different than the normal people

    為了提高儀器的性能，對于腦電波數據，還編制了功率譜計算程序並比較了腦梗塞病人和正常人功率譜的差別。
  12. Saturation vapour pressure of internal combustion engine under actual operation conditions is expressed as the multinomial by using least square method, which facilitates the calculation of rectifying coefficient of engine output and fuel consumption as well as the fabrication of computer programme for such calculations

    摘要介紹了用最小二乘法擬合方法，將內燃機現場環境狀況下飽和蒸汽壓表示為多項式形式，為計算功率和燃油消耗率校正系數，並為此而編制計算機程序提供方便。
  13. 5. automatic frequency adjustment function dynamically adjusted according to the words most frequently used words indicate the order, the order that intelligent, enhanced efficiency of the word

    5 .自動詞頻調整功能，根據詞語使用頻率動態調整詞語顯示順序，同時結合智能詞序修正，提高選字效率。
  14. The research purpose is to make scientific financial safe theory. through establishing chinese financial a real time monitor with early warning system, form financial safe results and supervision countermeasures which have straight sense and strong operability, to realize really effective control and supervise financial safety, raise financial safe degree. control financial risk below the critical state that may bring on financial crisis to ensure normal financial function and financial order

    本文研究目的是探討並總結金融安全理論，通過建立中國金融安全實時監測預警系統，形成直感的安全結果與操作性較強的監控對策，從而有效地提高對金融安全的控制和監管效率，實現有效地監控中國金融安全，提高金融安全度，把金融風險控制在可能引致金融危機的臨界狀態以下，確保正常的金融功能和金融秩序。
  15. Power bond graph is used to established the bond graph model of the lifting and dropping of hydraulic pile hammer and state space equation in the paper for hydraulic pile hammer is perplexing nonlinear system. in order to attain the graph that pressure, position, velocity, acceleration vary with time in the course of driving pile simulation procedure solving state space equation is designed on the basis of combining four - order runge - kutta method with predicator - corrector method, dynamic simulation of the hydraulic system is studied in matlab 6. 5. it is convenient to analyse dynamic characteristics of the hydraulic syste m, beneficial to the design and parameter optimization of the hydraulic system. in the final part of the paper, under detailed analysis of the control characteristics for double - acting hydraulic pile hammer with double cylinders, control system based on the programmable logic controllers founded on technology of modern compute is designed

    由於液壓打樁錘液壓系統是一個復雜的非線性系統，本文採用功率鍵合圖法建立液壓打樁錘上行、下降的鍵合圖模型和狀態空間方程，通過四階龍格?庫塔法和預估?校正法相結合編制了模擬程序對狀態空間方程求解，在matlab6 . 5中進行液壓系統的動態模擬，獲得液壓打樁錘運動過程中壓力、位移、速度、加速度等隨時間變化的曲線圖。此曲線圖方便了對液壓系統動態特性分析，為液壓系統的設計和參數優化提供了有益的借鑒。最後，在深入分析雙缸雙作用液壓打樁錘控制系統的功能要求后，採用了以現代計算機技術為基礎的新型工業控制裝置? plc可編程式控制制器，設計出了雙缸雙作用液壓打樁錘的電器控制系統。
  16. Results from hspice simulation and foundation show that the band - gap voltage reference of ic is 3. 126v, has a psrr of 65db, an accuracy of 23ppm / in [ 0, 70 ], and the band - pass filter has an gain of 73db, whose band - pass frequency is 0. 1hz ~ 10hz. comparator ’ s window is 700mv. time sequence and functions of digital circuits are normal

    Hspice和foundation軟體模擬的結果顯示，帶隙基準電壓源為3 . 126v ，電源電壓抑制比為65db ，溫度系數為23ppm / ;帶通濾波放大部分增益為73db ，帶通頻率為0 . 1hz ~ 10hz ;雙限電壓比較器窗口為700mv ，功能良好，數字電路時序正確，功能正常。
  17. The paper explores the ai theories of developing the capp expert system, and fixes on the knowledge representation method of production rules, and the new thought of developing the knowledge base and the inference engine in the es tool clips, and introduces the theoretical knowledge of clips. the pape builds up the knowledge base about the process knowledge, invents the inference engine by the theories of control strategy of forward reasoning and rete pattern matching algorithm, with the result of improving the reliability of knowledge, the quality of inference and the efficiency of the searching. using the dynamic interface mechanism and the compiled dll, the paper embeds the clips program into the vc + + environment and carries out the mixed programming so as to achieve the data communication between the vc + + and clips

    論文對開發capp專家系統的人工智慧理論作了比較深入的探討，確定了產生式規則的知識表示方法和用專家系統開發工具clips來開發系統的知識庫和推理機的新思路。在闡述了clips理論知識的基礎上，確定了以產生式規則構建工藝知識庫，以正向推理的控制策略和里德演算法的匹配模式建立推理機，從而提高了知識的可靠性、推理質量與搜索的效率。論文利用windows環境下的動態介面機制，調用已編譯好的動態鏈接庫clips . dll ，把所開發的clips程序嵌入到vc + +中再進行混合編程，實現了vc + +與clips程序的數據通信，成功地構建了capp專家系統。
  18. Especially in our country, from the government to local ity and the professions, the scientific subjects in a i i kinds of research plans, during the course of appraisement, are to be adopted the method of the peer preview with almost no exception. the research purpose of this subject is to classify the scientific subjects according to their objectives and qualities ; to determine a selecting requirement used by the peer experts so as to be fixed in the course of pract i ca i appra i sement under the gu i d i ng i deo i ogy of open, fai rness, impartiality ; to establ i sh var ious appraising standard and real izing measures due to the guide of existing appraise management theory and the principles that the determination of qua i ity should be combined with quantity, so as to make the peer preview system more scientific, more objective, more operational. this article first introduces the basic concept, the essence and the appraisement of the peer preview, then divide the various scientific planning subjects in our country into three parts of the basic research, the appl i cat ion research and spread of the achievement, the industrial subjects

    本文首先介紹了同行評議的基本概念、同行評議的實質、同行評議系統的評價；然後，將我國各級各類不同性質、不同目的的科技計劃項目，劃分為基礎研究、應用研究和成果推廣與產業化項目三大類；介紹了科技項目的申報及評審程序；根據不同類型科技項目立項的評審過程，提出了同行評議專家遴選的基本要求，建立了同行評議專家基本情況指標體系及模型，對同行專家評議的工作業績，提出通過評議項目累計數、離散率、命中率和成功率來進行評價；針對不同類型科技項目的特點，建立了較為準確、公正、可靠、可比、現實的評價指標體系；並在此基礎上，提出了若干演算法及解決方法；最後，對現階段國內外同行評議研究與實踐中應注意的幾個方面，提出了建議意見與對策。
  19. So by analyzing the stability of voltage vector and the changeability of current vector, we proposed to construct sinusoidal sequences with the same and delaying ninety - degree phase angles to voltage vector, then to multiply with the current vector respectively to bring about active and reactive power

    本文分析了單相系統電壓矢量的穩定性以及電流矢量的多變性特點，提出了對電壓矢量採用構造與之同相位和滯后90相位正弦序列的辦法，並分別與電流矢量相乘從而導出其有功和無功功率。
  20. In this paper, the digital image real - time processing system was a very important part of fed driving circuit system. altera fpga chip was used to complete operation on reading and writing and timing control of fed image data. the image process algorithms mainly used gray - level transformation in the theory of image enhancement, and the algorithm realized luminance non - uniformity control, gray - level non - linear correction and automatic power control for fed

    本文設計的基於fpga技術的數字圖像實時處理系統是fed驅動系統中的重要組成部分，其核心部分採用了altera公司的fpga晶元，實現對fed圖像數據讀、寫操作和時序控制等，而圖像處理的演算法部分主要是利用圖像增強技術理論中的灰度變換方法，實現對fed的亮度非均勻性控制、灰度非線性校正以及fed的自動功率控制。
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