結型整流 的英文怎麼說
中文拼音 [jiēxíngzhěngliú]
結型整流
英文
barrier layer rectifier-
On the basis of collecting and arranging a large amount of projects experience, conbined with construction diversion flood passing measures design and hydraulic model test of lihua hydraulic pawer station in 1995 and 1996, the dissertation studies the issues related with characteristics of concrete face rockfill dam including the selection of construction diversion flood passing standard and measures, flood passing during construction period and embankment stage, coffer dam design, construction scheme and general schedule etc. and present preference for project construction
本文在搜集整理大量工程經驗的基礎上，結合蓮花水電站在1995年及1996年導流渡汛工程措施設計及水工模型試驗，對混凝土面板堆石壩的導流渡汛標準、導流方式及其選擇、施工期渡汛及壩體填築分期、圍堰設計以及施工方案及總進度等與混凝土面板堆石壩特點有關的問題進行研究，為工程建設提供一定的參考。From the basic attributes of circulation system, building compages and arrangement, space frame and sightline conforming, landscape controlling, i build the evaluating model of the dendriform index system. chapter 5 of the dissertation discuss the residential quarter project in chongqing to prove the maneuverability of the evaluating model
第四章是論文研究的重點，結合設計方法的總結，從交通系統與流線組織，建築群體組合與布局，空間構架和視線整合，景觀構成四個方向為主幹分支，建立具有較強的可操作性的樹狀指標體系評價模型。Keanwhile, almost every new, industrial ideas has different re flection in the traditional uniyersity organizations such as knowledge - based organization, flexible human - based mangerent, horizontal structure, matrix structure, individuation, globlization and so on. in another word, universities are never short of these sodern organization ideas which closely related to the cu1tural characteristic. we have to ask if it is necessare for universities to judge their transfomional impulse and what is the purpose of re formation
更何況，在如今產業界中廣泛流行的各種新的理念，如知識型組織、以人為本的柔性管理、體現分權特徵的扁平化結構、組織整體運作的個性化意識和全球理念等等，幾乎在傳統的大學組織中都有不同程度的體現。換言之，大學先天上就從來不缺乏上述種種所謂的現代組織理念。而這些現代組織理念又無一不與大學的文化性格密切相關。The thesis is based on income question, forest coverage rate and grop production. to beging with, date envelopment analysis is proved that it can be applicated into grain for green in shan - bei district, and then in view of the fact, seven esential factors which have influence on the project are found out : expense of dam, expense of crop, expense of cash tree, expense of defense tree, other economic crop, expense of grass and graziery ; and the output factors include : income of gdp, pure income per captia, the area of decreasing land loss, graziery income, crop production, income of tree, the totle income of economic crop. after the date of each facts are puted into dea model, unefficiencial decision making units ( dmu ) found. the data that are got through adjusting unefficiencial dmus dy dea can offer guide in shanbei district upgrading of an industrial structure. at the same time, taking into account some possible problems in or after grain for green in shan - bei district, the thesis bring out some propesal to improve the circ umstance, enhance the life level and put the relation of population, resource and circumstance into a healthy orbit
因此，加快退耕還林還草，調整土地利用結構和產業結構，已成為實現山川秀美工程和可持續發展戰略的必經之路。論文以解決陜北地區的收入問題，植被問題以及糧食產量問題為出發點，首先從理論上分析了包絡分析方法在陜北地區退耕還林（草）中運用的可行性，然後結合陜北地區目前的實際情況，綜合分析出影響陜北地區退耕還林（草）的關鍵的七個因素作為輸入指標：水利水保設施投入，農作物投入，經濟林種支出，防護林支出，其它經濟作物，草類支出，畜牧業投入；以退耕還林所要解決的最終問題作為輸出指標： gdp收入、農民人均純收入、水土流失減少量、牧業總產值、糧食產量、林業總產值、其他經濟作物總產值。將各指標所對應的數據代入模型后，通過分析求解得出非有效的決策單元，再運用包絡分析方法的一些基本原理對非有效的決策單元進行調整，由此所得的數據對陜北地區的實際投入具有很好的指導意義。1 m 0. 5, the phase - shifted angle 6 is controlled in term of sine law which makes the magnitude of resonant voltage track a reference sine voltage, and the resonant voltage is rectified, filtered, inverted and then the better sine - voltage output is obtained, theoretical analysis and experimental results show that for the resistive load and inductive load, the switches of leading leg of the phase - shift - controlled circuit are always turned on at zvs, and ones of lagging leg are turned on at zvs ( < 0 ) or turned off at zcs ( ( > 0 ), moreover, all switches in the low - frequency inverter are always turned on and off at zvs, the measured circuit efficiency for rated load reaches up to 88 %
從功率單向流動角度出發，提出了一種lcc諧振型恆頻移相單相高頻鏈逆變電路拓撲，在調制系數0 . 1 m 0 . 5情況下，控制移相角按正弦規律變化，使諧振電壓脈沖列的幅值追蹤參考正弦電壓信號，經過整流、濾波、低頻逆變，從而獲得正弦度較好的輸出電壓。理論分析和實驗結果證明對于阻性負載或阻感性負載，移相全橋具有超前橋臂零電壓開通，滯后橋臂或者零電壓開通（ _ 0 ）或者零電流關斷（ _ 0 ）的軟開關特性，而低頻逆變器的各個開關均實現零電壓條件下的開通與關斷。Ihmiigh launching co - ilisliihulioii planning s ) ' u ' m, ckvliunic iriminal, ( racing vehicle system, digital material stoic lo cnliance lire inlbmuilion quilily aixl ilie elliciency ol transference is tire way to make ihe decision scientilic. it is mlional lo say lliat logislies infoiniation iretvvoik is ure nervous system of logislies. herc is inlnxlucing ure maluix ; infoiniation reading technologies and inuisilion mcxjels. i ' br uie enhaireing logistics eflicieirey tiaditional busiiress pixtceed aixl construction of inlcr - com | tanies aixl inte r - tleputmeiits also liave to ire lailoixxl. lire ne - cngincering of logistics ixpincsscs aixl tire policies of oalering, inventory, distribution aixl lire lhiixl | nlv logistic aiesludicxlinlcnsivcly, in order to eliminate ure obstacles among logistics at picsenl ihixnigli innovation aixl ic - engincering as well as losatisfy ureireal of e - commerce uiixiugh eflieienl aixl eflcdivx
要實現現代物流的效率還必須根據電子商務的特點對傳統的企業內部及企業間業務流程、結構、策略進行適當調整以實現業務流程在整體上的優化，在業務策略分析中重點研究了物流業務重組、采購策略、庫存策略和配送策略以及第三方物流，力圖通過業務策略的革新與調整來消除現行物流體制中存在的障礙，以實現新型物流的便捷與高效並滿足電子商務發展的需求。The generator is verified to be of well performances by experiment. the third part concerns the control system of pm generator in vehicle application by commutating and inversion. considering the development of future power supply of auto electric system and the economizing on energy, the multi - voltage power supply system for future autos power supply system is introduced, and the design is given in detail
最後，結合現代電力電子技術，利用整流橋、逆變器、 mosfet等元器件設計並實現了車用永磁發電機恆壓輸出控制；從未來汽車電氣系統的發展方向和高效節能方面考慮，提出未來汽車的多電壓供電系統的典型配電模型，並對該模型進行具體設計，實現多電壓供電的功能，並給出了控制線路中各主要部分的波形。Aiming at the 28km long river regulation and protection works on fuyuan reach where the river evolutions are complicated and the dimensions of control works are difficult to calculate, this dissertation is to study three - dimensional numerical analogue not only under natural conditions but also under ten regulation schemes, using the river sediment quasi - two - dimensional model associated with the river sediment plane two - dimensional model and the river three - dimensional model
針對江道演變復雜，工程布局及控導工程結構尺寸難以計算的撫遠28公里長江段的防護整治工程，按天然情況和10個不同整治方案利用河流泥沙準二維數學模型、河流泥沙平面二維數學模型和河道三維水流數學模型結合進行三維整體的數值模擬。The first step, set a suit of index system for evaluation, taken all the risks through the construction and running process of logistics projects into account, and number the indexes by experts investigation. introduce an example and judge the risk levels by a team of experts, then evaluate the whole risk level of the project by fuzzy mathematics comprehensive judgment and get the result. the second step, analysis the economic risk qualitatively, forecast the profit of the certain logistics project, to find out the economic risk of the project by risk compensation way
本文根據大型物流項目投資大、風險高、專業性強的特點，將風險評估應用於物流項目，將物流項目的風險評估分為兩個層次：第一層次，充分考慮了物流項目投資建設及營運過程中的各種風險因素，建立了一套適用於物流項目的風險綜合評價指標體系，採取專家調查法對各因素權重賦值，並通過專家評審委員會對某一物流項目實例中各因素的風險程度進行判斷，採用模糊綜合評判法對該項目整體的風險程度進行訐估；第二層次，結合項目整體風險程度訐估的結果，對物流項目投資建設的收益狀況進行預測，採用風險報酬率法對具體的物流項目投資方案進行經濟風險分析，對該項目的經濟風險進行定量分析。Using the digital technology improves the performance traditional thyristor welding machine, according to the characters of the double inverse star from rectifier circuit, set the parameters with micro - controller accurately, design the dependable trigger circuit, lead the feedback of voltage for the operation program, so the voltage of main circuit be carried out very steadily
摘要利用數字控制技術對傳統晶閘管焊接電源進行改進，根據雙反星型晶閘管整流電路的特點，採用單片機進行精確設定，設計了高可靠性觸發迴路，結合電壓反饋進行程序運算控制，實現了主電路輸出電壓的精確調整和可靠運行。And power loss analysis of srs and the layout design related to srs are very important to the proper design. with a small signal mathematic model of half - bridge converter, the relationship between performance of power supply and frequency domain characteristics of the system is analyzed. based on the above study and some simulation the system design is completed
文中在給出了結合單繞組自驅動方案的對稱半橋變換器穩態原理分析、同步整流管損耗分析暨選擇原則、同步整流管相關電路的布局設計后，建立了對稱半橋變換器的小信號數學模型，分析了電源系統時域性能指標與頻域特性之間的聯系，在此基礎上完成了系統的設計。The series h - bridge multilevel converter ' s power circuit is composed of uncontrolled rectifier with filtering capacitor and single phase h - bridge voltage - type inverter
串聯h橋多電平變頻器的主迴路從結構上可分為三相電容濾波不可控整流電路和單相電壓型全橋逆變電路。Among these a three - phase voltage - style pwm rectifier is selected, and voltage space vector pwm is employed. and its principle, mathematics models and the selection of control parameters are studied in details. in addition to, a fast algorithm for space vector pwm, the method of decomposition matrix proposed in this paper can simplify the calculation process and with which we may omit the triangular function tables
分析總結了現有的三相整流電路拓撲及其控制策略，選擇以三相電壓型pwm整流器為研究對象，並採用電壓空間矢量pwm控制策略；分析研究了整流器的工作原理，建立了數學模型；研究了控制方法及其參數設計；提出了電壓空間矢量的pwm快速演算法，不需要三角函數表，由dsp實時計算得到精確的工作矢量及零矢量的作用時間。By analying the requirement of traction characteristics of rectifier in ac drive reciprocal power - fed test system, in this paper, the research on high power supply quality rectifer is conducted around topology and mathematical modeling, high power supply quality rectifer ' s control methods are summarized. predicted current control based on space vector pwm in two - phase stationary coordinates is proposed and used in this paper
本文分析了交流傳動互饋試驗系統牽引特性對整流電源的要求，對高供電品質整流電源的拓撲結構和數學模型進行了研究，總結了高品質整流電源的控制方法，闡述了本文採用的兩相靜止坐標系下基於空間矢量脈寬調制的預測電流控制方法。A study on the rel ationship model of information technol ogy, enterprise strategy, business process and organization structure
業務流程及組織結構整合的關系模型研究The power circuit of the system adopts the voltage frequency conversion structure of ac - dc - ac, and is composed of the commutation circuit, filter circuit and intelligence power module ( pm15rsh120 ). control circuit takes the dsp chip tms320lf2407 as core, including the pwm signal occurrence circuit, detect circuit of stator current and direct current voltage of generatrix, drive circuit of intelligence power module, detect circuit of speed, protect circuit of system etc. all of this builds the full digital vector control system of asynchronous motor
該系統的功率電路採用電壓型的交-直-交變壓變頻結構，由整流電路、濾波電路及智能功率模塊ipm （ pm15rsh120 ）逆變電路構成;控制電路以dsp晶元tms320lf2407為核心，加上pwm信號發生電路、定子電流檢測電路、直流母線電壓檢測電路、智能功率模塊驅動電路、速度檢測電路、系統保護電路等，構成了功能齊全的異步電機全數字化矢量控制系統。This paper introduces the composing theory of a new highly efficient switching power supply invented for power system, with emphasis on the designing method and pivotal questions encountered wherein of the two main modules, highly efficient rectifying unit and monitoring unit
作者介紹了一種專為電力系統研發的新型高頻開關電源系統的結構組成原理，側重介紹了系統的兩個主要模塊高頻整流單元和監控單元的設計方法及在設計中的幾個關鍵問題。The research on the whole power supply falls into three - phase bridge rectification and ps zvs pwm dc / dc full - bridge converter. the paper gives the model of three - phase bridge rectification and ps zvs pwm dc / dc full - bridge converter. the resonant component of ps zvs fb converter is conformed by theoretic - analyzing and simulation
在對整流電路和移相控制zvspwmdc dc全橋變換器進行了大量研究后，給出了整個電源系統的模擬模型和模擬結果，試驗結果證明本文設計的電源滿足充電性能要求。Also longitudinal aerodynamic characteristics of missile are investigated. the traditional dependence on wind tunnel experiment is changed greatly : firstly, the aerodynamic characteristics of missiles with complex configuration are solved satisfactorily, especially integral rocket - ramjet missile ; secondly, feasibility of n - s equation to numerical simulation of inner and outer fiowfield of missile with complex configuration is discussed
（ 3 ）採用n - s方程方法數值模擬某型整體式沖壓發動機導彈的全彈內外流場，研究了導彈的縱向氣動特性，改變了過去依賴于地面風洞試驗結果的傳統做法。An integrating guangzhou post logistic public service network took into shape with the combination of the new logistic network and the traditional logistic network for the purpose of sharing resource, so as to improve performance and affordability, implement innobative ways to grow both its revenues and capability
新型物流網的建設結合傳統的物流網，形成一個綜合的整體的廣州郵政物流公眾服務網路，實現資源共享，達到投資最省、利潤最大、效果最好、能力最強。分享友人