零序系統 的英文怎麼說
中文拼音 [língxùxìtǒng]
零序系統
英文
zero sequence system-
The research of this paper includes three parts : the first, according to the statistical figures about the cargo transport in recent years, it analyzes cargo transport structure and the changing law and the internal reason of cargo transport. at the same time it analyzes and calculates the change of the arriving ships " structure for a systematic and full understand of the transport demands. the second, it make a scientific forecast of the port ' s future cargo capacity making use of the grey forecast system, which provides scientific basis for medium - long term development plan of the port ' s cargo handling capacity
本文研究的工作主要分三個部分：第一，根據張家港近年來有關貨物運輸的一些統計數據，對貨物運輸的結構和規模演變的規律及內在原因作一剖析，同時對到港船舶的結構變化進行預測，以求對運輸需求有一個系統全面的了解；第二，應用灰色預測系統對張家港港未來港口貨運吞吐量進行科學預測，為張家港港貨物裝卸能力規劃提供科學依據；應用物元分析技術對張家港港口的未來發展前景作出一定程度的分析、研究，找出張家港港口未來發展規劃的零散無序、不成系統的因素，總結前人經驗的基礎上採用綜合評判物元模型進行評判，在預測港口未來發展規劃是否科學實際上具有獨到見解。Class cspart is a program interface provided for windchill system. windchill system can access and modify parts " parameters using this class, so the two systems can keep the integrity of data and realize information integration. two systems form b / w / d - c / s commix scheme
Cspart類是編碼系統提供給windchill的應用程序介面，使windchill可以訪問和修改編碼系統某個零件的圖紙參數，保證了兩個系統相關零件屬性的一致，實現了信息集成。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This article has studied the deficiency and shortcoming of various kinds of methods of the parameter measurement of transmission line at present, proposed the measurement under operation on the basis of gps, researched gps application way and error that may appear in the power system synchronal sampling, put forward the parameter computing technology based on the information of both sides of transmission line, which solved some problems that exist in the parameter measurement, especially the problem that exist in the zero - sequence parameter measurement of transmission line with mutual inductance
本文研究了目前輸電線路參數測量的各種方法，分析了其中存在的不足和缺點，提出了基於gps的輸電線路參數在線測量方法，研究分析了gps在電力系統同步采樣中的應用方式以及可能出現的誤差，在同步采樣的基礎上提出了基於雙端信息的線路參數計算方法，較好地解決了輸電線路參數測量中存在的一些問題，尤其是多回互感線路零序參數測量困難的問題。The development of a visual short circuit software under ptcad2000 is presented in this paper, as well as the system structure, the definition of the data structure, the interface to ptcad2000, the conversion of the original wiring diagram of power network to calculable power network, the implement of three sequence network, the implement of impendence matrix and admittance matrix of power network considering the zero sequence mutual inductances among lines, and the implement of short circuit calculation by using computer
本文介紹了在ptcad2000平臺下短路電流可視化計算軟體的開發。介紹了軟體的系統結構、數據結構定義、與ptcad2000平臺的介面、電力系統原始接線圖轉成等值可計算網路、序網的生成、考慮零序互感線路阻抗時電網導納矩陣和阻抗矩陣的生成，以及故障點短路電流計算的計算機實現。They include the framework of product long - distance maintenance guiding system, fault diagnose, automatically making of maintenance technics, the query of information and the visual leading. according to b / s model, the author puts forward system structure of product maintenance guiding system based on network. the dissertation introduces the main technologies for the realization of maintenance guiding system, the data structure of product fault and order of disassembly and assembly, and the way to get the preliminary data
本論文對產品維修向導系統的幾個部分：包括產品維修向導系統的體系結構、故障診斷、維修工藝的自動生成、資源信息查詢和可視化引導的有關技術進行研究；根據web技術b / s模式結構和產品維修過程提出基於網路的產品維修向導系統的體系結構；介紹了維修向導系統的具體實現中的一些主要技術和產品故障數據結構、拆裝順序數據結構的設計以及這些數據表的原始數據獲得方法；對產品故障診斷採用的決策樹方法作了介紹；重點對產品故障診斷和產品各零部件的拆裝順序關系以及資源信息的查詢進行了實現；針對轎車卡板式門鎖，開發了產品維修向導系統的實例。Therefore, assertion statements have zero overhead in your final release program ; you can use them liberally in your code without affecting the performance of your release version and without having to use
因此，斷言語句在最終發布程序中系統開銷為零；可以在代碼中大量使用斷言語句，而不影響「 release 」版本的性能，並且不必使用According to the mis configuration and flows, dfmis - 1 software system has been programmed which is composed of inventory management subsystem, purchasing management subsystem and manufacturing schedule management subsystem. through studying deeply manufacturing schedule management, we find a way to make mrpii and jit be jointed together into manufacturing schedule and monitoring block. the study discusses especially how to make certain the producing period of all of component during dynamic manufacturing with methods of jit and " electronic bulletin ", how to get true capability of implementing plans in all working procedure section, and how to empower monitoring manufacturing in order to avoiding break between working procedure sections
其中一項就是設計並實施了整個公司的網路綜合布線和計算機系統的配置；第二項是根據公司最急需的功能，從「信息流」 、 「物流」和「資金流」的角度，提出了相適應的mis結構和流程，據此開發出具有庫存、采購和生產計劃管理功能的dfmis - 1軟體系統，並對其中的生產計劃管理模塊進行了較深入的研究，實現了mrpii和jit在生產計劃、生產監督上的結合和應用，特別對利用jit及其「電子看板」在生產動態中確定零部件的生產周期、獲得各工序段實際執行計劃的能力，以及在加強生產監督、避免各工序之間的脫節上做了進一步的探討。It includes four criterions of locating fault point ? “ transient zero sequence current amplitude law ”, “ stable base wave zero sequence current phase law ”, “ stable seventh harmonic zero sequence current phase law ” and “ s injection law ”. pointing out how the law locate the fault point to minimal fault section by applying these criterions gradually. the law will not only make up the blemishes existing in current methods for single - phase fault location in small current grounding system, but also locate the fault point to minimal fault isolating unit on fault line
該方法通過將所包含的四個定位判據- 「暫態零序電流幅值法」 、 「穩態基波零序電流方向法」 、 「穩態7次諧波零序電流方向法」和「 s信號注入法」 -進行有選擇地遞進使用，不僅有效彌補了目前已有小電流接地系統單相接地故障選線的缺陷，更將故障定位在故障線路最小故障區段。In the control software, the object - oriented method is used for doing system analysis and study. furthermore, the message - driven mechanism is used in the control software research and design. the instantaneous zero vector inserting space vector pwm theory is adopted to control the permanent magnet synchronous machine as the driver motor in the control software
軟體採用面向對象的程序設計方法對系統進行分析與研究，將消息驅動機制應用於控制軟體的設計和開發之中，在控制軟體中採用瞬時零矢量插入磁鏈軌跡法（電壓空間矢量法）來控制永磁同步電機。Unified power flow controller ( upfc ) is one of the most powerful and most promising controllers of facts. if we use upfc to control the transmission parameters, terminal voltage, line impedance and phase angle in normal situation and use it to compensate zero sequence and negative sequence currents when one of transmission lines is cut off, we can implement two phases operating in high voltage transmission lines, which can improve stability and reliability for the transmission system
統一潮流控制器（ upfc ）是功能最強、最具發展潛力的靈活交流輸電系統（ facts ）控制器之一，如果在常規條件下，用upfc實現輸電線路的電壓調節、移相、潮流控制、阻尼振蕩等功能，在發生單相永久性接地或單相斷路故障時，由傳統的三相跳閘改為單相跳閘，用upfc的並補來濾除兩端系統的零序和負序電流，用upfc的串補來提高輸電線的傳輸功率，以實現兩相長期運行，那麼輸電系統的穩定性、可靠性將大大提高。The 00 ( object - oriented ) technique of standard template library with ansi / iso c + + is used in designing the program, and the dynamic access mechanism and the startup with zero content are realized by using the specialization and inheritance object of vector template class as the data container which can change the content itself according to the number of discretization node data of a computing practicality. so, the fact that the use of the static ems memory which is not necessary is avoided
在設計面向對象有限元程序中運用了基於ansi isoc + +標準模板庫（ stl ）的技術，以向量模板類的特化繼承對象為變容量數據容器，實現了可按計算實例的離散結點數量動態存取數據的機制和數據容器的零容量啟動，從而避免了運算時系統對靜態內存空間的超量佔用。Abstract : zero sequence directional power protection is widely used in neutral directly grounded system
文摘:在大電流接地系統中廣泛採用著零序功率方向保護。This paper researches laying out mode and procedure of manual drawing, describs in bfn constructing elements and their structure of working drawing, and determines factors which affect drawing effect. it introduces simply that functions of an interactive drawing software, which are basic and special laying out characters, methods of modification and logical order of normal drawing. also an example is given. the paper formulates out a helpful method with which engineering drawing is drawed under interactive system
研究了傳統繪圖模式的構圖方式和過程，用巴科斯範式描述了零件圖的構圖元素與結構，確定了影響繪圖效率的因素.文中簡要介紹了交互圖形軟體具有的基本的和特有的功能，在交互繪圖中的構圖特點，圖形的生成與修改，一般作圖的邏輯順序，同時給出了示例.該文歸納出用交互圖形系統生成工程圖樣的便捷方法In 2000, the company imported cad systems, cradle - style cloth laying machines, computer automatic cutting system, durkopp computer sleeve machines, computer automatic pocket - hole sewing machines, and macpi computer - control solid press flowline from america, germany and italy. from the course of stocking to processing, and leaving factory, each working procedure is under controlled state in order to prevent unqualified products and insure 100 percent yield
2000年公司自籌資金，從美國、德國、義大利引進cad放碼、排版系統；獨特搖籃式鋪布機，電腦自動裁剪系統，杜克普電腦上袖機、開袋機，邁埤電腦控制立體整燙流水線。公司從進貨檢驗，加工直至成品出廠，每道環節、工序都處于受控狀態，以消除和防止不合格產品轉序和出廠，保證產品合格率達到100 % ，全面實施"零缺陷工程" 。From the perspective of minimum transmission losses, an instantaneous reactive power theory for systems with any number of phases and with or without neutral line is developed. under the new definition, each quantity has its own physical meaning, and the zero sequence current can be decomposed into active and reactive components. furthermore, a generalized compensation method for zero sequence current is developed
從輸電損耗最小的角度出發，提出了任意相無中性線或有中性線系統的瞬時無功功率理論，在新的理論下，每個量都有清晰的物理意義，且能分解出零序電流的有功分量和無功分量，並給出了通用的零序電流補償方法，揭示了瞬時無功功率理論與傳統平均意義下的無功功率理論的聯系及本質區別，從而為研究hvdc - vsc及各種facts裝置的無功功率控制奠定了理論基礎。From 1st june 2004 ( tuesday ), first ferry will introduce a new fare collection system to replace the manual ticket system with the aim of streamlining operation and utilizing resources more effectively. passengers of inter - islands ferry service can pay by octopus card or tender exact fare, no change will be available
由二零零四年六月一日（星期二）起，新渡輪于橫水渡航線引入新繳費系統以取代人手售票服務，旨在簡化繳費程序及有效運用資源。橫水渡乘客可使用八達通咭或以現金繳費，不設找贖。The schedule of this kind of production can be formulated as assigning n parts to m machines. to find the optimal solution is an np - complete problem in theory
該類生產的調度可歸結為n種零件需經m類機器加工的復雜非流水型作業系統的排序問題。Under the background of the research work - " expert system of hydraulic brake system design for saloon car, small and medium passenger car " for nanjing yuejin automobile group, in this paper, a set of special cad software for vihicle brake was developed in which the researchful object was brake, . the cad supporting software was pro / engineer and the developing language was vb. the project of discreted brake was raised and 3d graphic parametric library of typical parts and assemblies was established. 3d solid modeling and parameter - driven between dimensions and relations were accomplished using pro / engineer
本文以南京躍進汽車集團的橫向課題「轎車、中小型客車液壓制動系設計專家系統」為背景，以制動器為研究對象，以pro engineer為cad支撐軟體，採用vb語言，開發了一套汽車制動器專用cad系統；提出了制動器離散化方案，構建了參數化的制動器典型零部件三維圖形庫，使用pro engineer實現三維實體造型以及尺寸與關系的參數化驅動；圖形庫系統採用參數化圖庫引用、管理機制並擁有一個開放的擴充介面；研究了pro engineer二次開發模塊pro toolkit ，解決了同步模式下定製程序界面的問題，並實現與pro engineer的通信；建立了制動過程數學模型，推導了制動方程式並給出相關解法，編制了制動器數值模擬分析程序；構建了制動器設計資料庫。The research job includes bringing a project about fault calculation, using node impedance matrix as maths model of network to derive the arithmetic based on the fundamental of modifying impedance matrix by adding the branch, building the whole database with micosoft access. the whole project is realized with visual c + + 6. 0. it is applied to au hui electric network, and is proved correct
本文首先根據系統的要求，綜合考慮各種運行方式變化，提出合理的零序電流，分支系數的計算方案；然後採用節點阻抗矩陣作為系統的數學模型，推導出基於支路追加法的阻抗矩陣快速補償優化演算法，從而實現計算方案；最後以micosoftaccess為工具設計出完整的故障計算數據庫。分享友人