直流原理 的英文怎麼說

中文拼音 [zhíliúyuánlǐ]
直流原理 英文
once-through principle
  • 直 : Ⅰ形容詞1 （成直線的; 硬挺的） straight; stiff 2 （跟地面垂直的; 從上到下的; 從前到后的） erect; v...
  • 流 : Ⅰ動1 （液體移動; 流動） flow 2 （移動不定） drift; move; wander 3 （流傳; 傳播） spread 4 （向壞...
  • 原 : Ⅰ形容詞1 （最初的; 原來的） primary; original; former 2 （沒有加工的） unprocessed; raw Ⅱ動詞（原...
  • 理 : Ⅰ名詞1 （物質組織的條紋） texture; grain （in wood skin etc ） 2 （道理;事理） reason; logic; tru...
  • 直流 : direct current （dc）; constant current; steady current; continuous current; zero frequency curre...
  1. Depend on the comprehensive analysis and study of the structure, principle, and exterior characteristic of the motor, through the methods of system modeling and digital simulation analysis, two kind of control device that work for the low voltage ( lvdc ) and the high voltage ( hvdc ) in avigation are researched respectively. point to the control technique of close - loop speed stabilization at a limited adjustment speed range, we bring out the close - loop speed control method that using the rotor position sensor indirectly measure the speed of the motor

    在全面分析了稀土永磁無刷直流電動機的結構特點、工作原理、運行方式以及外部特性的基礎上，通過系統建模和數字模擬分析，分別針對航空低壓直流（ lvdc ）和高壓直流（ hvdc ）兩種電動機構用永磁無刷電動機，在小范圍轉速連續調節下的閉環穩速控制技術進行了詳細理論研究，提出了利用轉子位置傳感器信號間接測量電機轉速進行電機轉速閉環穩速控制的策略。
  2. Lk - coriolis mass flowmeters made according to the coriolis mass inside prineiplecloses the dischange apperrance of the fluid quality. discharge inside the piping, its structure be generally spread feeling machine and signal by signal diagraph to comvert to machine two part constituce

    Lk系列質量流量計是根據科里奧原理製造的一種新型的直接測量封閉管道內流體質量流量的流量測量儀表，其結構一般由信號測量傳感器和信號轉換器兩部分組成。
  3. Recently, in the field of microfluidics system the drive mode of flow is a key problem, dc electroosmoticflow micropump bases on the principle of electroosmosis, which control the flow in the microchannel with electric field. recent years, it is more and more attracting people to realize it

    當前在微流控系統中液體的驅動方式是一個關鍵問題，直流電滲流微泵是基於電滲原理，利用電場控制通道中的液體流動，實現無運動部件的液體流動系統，近年越來越受到人們的重視。
  4. The structure and operating principle of an air - charged split - type adjustable shock absorber was described, e non - linear parameterized mathematical model of this shock absorber ' s damping characteristics was established according to fluid mechanics theory and the main structural affection factors to shock absorber ' s damping performance, such as the diameter of piston valve orifice, the diameter of adjustable orifice, the initial volume of gas chamber, the diameter of piston rod, the inner diameter of oil pipe and so on, were analyzed by simulations

    摘要通過分析一種分體式充氣可調阻尼減振器的結構和工作原理，運用流體力學理論，建立了該減振器阻尼特性的非線性參數化模型，模擬分析了活塞阻尼閥孔徑、阻尼調節孔徑、氣室初始體積、活塞桿直徑、油管內徑等主要結構參數對減振器阻尼性能的影響，通過試驗測試，得到了減振器樣件的阻尼特性及其可調范圍。
  5. The operation principleresult of saving power ， mate rial and reliability of ac and dc usual auto - converting saving power instrument are expounded, which the operation - coil of ac contactor given ac and dc voltage is usual, output is even dc, on and off and keeping voltage non - contactor auto - convert

    論述了與交流接觸器操作線圈適配的交直流輸入（操作）電壓通用、恆直流輸出、吸合與保持電壓無觸點自動轉換節電器的工作原理；接觸器配用節電器后的節能節材效果及節電器的可靠性。
  6. The algorithm principle, hardware design and software design of the scheme are proposed and experimentally demonstrated ; the main contents of this thesis are as follows : firstly, we study the principle of the fiber optic weak magnetic sensor based on magnetostrictive effect. after analyzing the characters of the magnetic field sensing signals, we know that the magnetic field sensing signals ’ fundamental component is proportional to input dc magnetic field

    敘述了該方案的原理、軟硬體設計過程，並通過實驗進行了驗證，本文主要內容如下:首先，研究了基於磁致伸縮效應的光纖微弱磁場傳感器傳感原理以及輸出信號的特徵，分析得出在干涉儀處于正交工作點時，傳感器輸出信號的基頻分量與被測直流磁場成正比關系。
  7. Theory of thulium no - brush dc motor will be research. 2

    了解稀土永磁無刷直流電機的工作原理。
  8. To giving some reference, this paper discusses the design of the instroduction, stirring up doubts, multimedia teaching and the content disposal about the emphacs and difficulty of the lessen of the base principle and structure of the dc motor

    摘要圍繞直流電機的基本工作原理與結構這節課的重點和難點，結合教學實踐，從導語設計、激疑教學、多媒體教學、教材內容處理等4個方面對其教學方法進行了討論，以期對教學同行提供借鑒。
  9. Firstly. operation principle of induction heating is introduced and the actuality of the power supply for induction heating is summarized. then, the scheme of structure of the power supply is established : uncontrolled rectifier and buck chopper constitute dc circuit. in this part, operation principle of a kind of soft switching buck chopper is presented mainly and the conclusion that the power semiconductor devices operate in soft switching is also illustrated by analysing the operation principle of all stages ; series resonant inverter is selected as inverter circuit via comparing the advantage and shortcoming of parallel resonant and series resonant. moreover. the work principle of series resonant inverter is analysed and the calculating method of the best dead time is put forward as well

    文中首先介紹了感應加熱電源的工作原理並綜述了國內外的研究現狀。接下來分析並制定了電源主電路的構成方案：在對比幾種功率調節方式的基礎上選擇了不控整流加斬波調壓作為直流部分。在這部分里，重點研究了一種軟開關buck變換器，通過分析各階段的工作原理說明了開關器件如何工作在軟開關狀態；對于逆變器部分，在比較了串、並聯逆變器優缺點的基礎上選擇了串聯諧振逆變器，並詳細分析了串聯逆變器的工作原理，提出了最佳死區的計算方法。
  10. The thesis roots in the item supported by " fifteen " aviation funds, - new type aeronautic linear dc motor ( ldcm ), study its classes characteristics and work principle, mainly researches the drive and control technique of aeronautic linear dc step motor ( ldcsm ) using in emergency discharging oil valve on airplane

    本文源於「十五」航空支撐基金項目-新型航空用直線直流電動機。論文研究了直線直流電動機的分類、特點及其工作原理，重點針對飛機應急放油閥用航空直線直流步進電動機驅動控制技術進行了研究。
  11. Through consulting lots of relevant references, present research of direct drive volume control hydraulic servo system is summarized in this paper, the principle and character of this system are expatiated, the principle of vector control is introduced. at the same time, the mathematical model of ac asynchronous motor is set up based on the vector control theory. the mathematical models of both the pump controlled motor and pump controlled cylinder are set up and simulated in this paper

    在查閱大量國內外相關文獻的基礎上，本文綜述了國內外對該系統研究概況，闡述了該類系統原理和特點;闡述了矢量控制的基本原理，並基於這一原理建立交流異步電動機的數學模型;分別建立了泵控馬達系統和泵控缸系統的數學模型，並給出了模擬分析;設計了用於泵控馬達系統的集成閥塊，加工了密閉壓力油罐;針對現有直驅式電液伺服裝置所存在的問題，本文主要針對系統工作過程中所產生的噪音與爬行問題進行了一定的研究。
  12. Study of principle of selective leakage protection of zero sequence dc of low - voltage power network underground and its implementation

    礦井低壓電網零序直流選擇性漏電保護原理的研究及實現
  13. The carrier wave is modulated directly by the baseband signal at several frequency point in l band and s band. firstly, this paper clarifies the theory of i / q modulation, elaborates evm and acpl, and analyzes the effect of amplitude and phase unbalance and dc offset on evm. secondly we review the basic principle of phase locked loop and it ’ s composing parts, including the basic conception and design method of pll frequency synthesizer, especially introduce the charge pump pll frequency synthesizer in detail

    首先，在闡述i / q正交調制基本原理的基礎上，通過對誤差矢量和鄰近通道功率泄漏的詳細分析，定性、定量地討論了各種非理想電路因素（如相位不平衡、幅度不平衡、直流偏差等）對調制器性能的影響;其次，介紹了鎖相環的工作原理和基本組成部分，包括鎖相環的設計和環路濾波器的設計，特別詳述了電荷泵鎖相頻率源;第三，介紹了採用直接調制技術模擬衛星信號的射頻前端的設計;最後，對整個直接射頻調制系統進行測試，結果基本上達到了課題要求。
  14. Digital signal processor ( dsp ) combined with repm bldcm, which build up a dc adjustable speed system, achieve to control multiple motor speed, positive and negative rotate, protect and fault exemine by a true single chip. design and present a electromagnetism scheme of repm bldcm used in electromotion chair drive system. select electronical components and chips in the drive board by contrast with variant drive mode. design the drive board principle picture, make a drive board pcb and debug it. design a principle picture with dsp core. workout the motor control code introduced popular programme modle. test the programme reliability and control performance by linking tms320lf2407 evm, pc, drive borad and the bldcm. the bldcm swatch is prepare experiment

    本論文闡述了方波驅動稀土永磁無刷直流電動機的原理及數學模型；設計並給出了一種電動座椅用稀土永磁無刷直流電動機的電磁設計方案；對電機採用何種驅動方式進行了對比分析；對驅動電路進行了元器件選型、原理圖設計、制板及調試；有針對性的闡述了dsp在本系統應用中所涉及到的功能模塊；設計了以dsp為核心的控制電路原理圖；以模塊化的軟體編程思想編制了電機控制軟體；通過tms320lf2407目標板、上位機、驅動板及電機的聯調，證明了系統可行。
  15. At first, on the base of the analysis of the mechanism of the helical gear pump, the paper try to find the relationship of the helical gear pump flow pulse with its corresponding parameters, give the solution of the problems brought by the replace of spur gear to lay the firm basis for the structural design of helical gear pump

    本論文在對齒輪泵工作原理和流量脈動機理分析的基礎上，首先探討了斜齒齒輪泵的輸出流量脈動與斜齒輪各結構參數之間的關系，以及由於斜齒輪替代直齒輪帶來的相關問題並提出解決辦法，為斜齒齒輪泵的結構設計奠定基礎。
  16. The work principle of dual stator - winding induction generator system, and the researches on practical application of dual stator - winding generator system are analyzed in detail. aimed at the work condition of wide rotor speed and optimization of static reactive power generator ’ s volume, the performance of dynamic state and static state and optimal control of high - voltage dc generator system based on dual stator - winding induction generator, are studied in this paper. these researches not only achieve the work characteristic of dual stator - winding induction generator system, but also set up the foundation of optimal design of dual stator - winding induction generator and engineering realization of dual stator - winding induction generator system used in wind generating

    本文闡述了定子雙繞組發電機的基本工作原理，基於matlab軟體建立了定子雙繞組感應電機發電系統的模型，並在此基礎上詳細分析了定子雙繞組感應電機發電系統的工作機理、影響兩套定子繞組容量比的因素等，從而摸清了該系統的特性，尤其是定子雙繞組感應電機高壓直流發電系統在變轉速、變負載下工作的特性，從而為該系統的工程實現奠定了重要的理論基礎。
  17. During the circuit design, the author analyzed the basic principle of the direct current motor, pwm control, h - bridge power driver, and two control techniques of h - bridge power drive circuit, designed its general structure, so the feasibility of the design is confirmed. then, reference, oscillator, power dmos gate drive circuit ( charge pump, bootstrap ), and dead time generation circuit are designed and analyzed in the sub - circuits. a current - controlled oscillator is presented in this thesis

    在電路設計中，作者介紹了直流電機的工作原理和數學模型、脈寬調制（ pwm ）控制原理、 h橋電路基本原理和h橋功率驅動電路的兩種控制模式，設計了驅動電路的總體結構，給出了電路的功能模塊，確定了設計的可行性，然後在子電路模塊中，重點分析設計了基準源電路、振蕩器電路、高端功率管柵驅動電路（電荷泵及自舉電路） 、低端功率管柵驅動電路和死區時間產生電路。
  18. Based on the analysis of current control programs of the connecting and dismounting rods ? coupling for the down - the - hole, the automatic control program is put forward for the propulsion floated by rotation pressure controlling, and the program is tested

    分析了新型液壓碎石機液壓系統的特點及要求，研究設計了新型的液壓控制系統，並介紹了其組成與工作原理，以及流量和壓力的調節與控制原理.該新型液壓控制系統可在操縱臺上直接控制碎石沖擊器的工作參數和性能參數，系統效率高，操縱控制舒適方便，能適應不同工況的需要
  19. From the viewpoint of safety technology of chemical reaction with heat release. the technical causes of getting out of control of these reactors are analyzed. hazardous effects of the leakage of chemical reactants both on human and environment, and the existing problems in current safety technological measures are also discussed. the cooling method of jet vaporization based on the jet principle and the direct cooling by non - vaporized liquid are introduced. the development trends of the safety technology for chemical reactors are analyzed

    從放熱化學反應的安全技術觀點出發，分析了放熱化學反應器失控的技術原因、化學反應物泄漏對人員和環境造成的危害、現有安全技術措施存在的問題；介紹了基於射流原理的噴射汽化和非汽化冷卻液體的直接冷卻方法；還展望了化學反應器安全技術的發展方向。
  20. Abstract : from the viewpoint of safety technology of chemical reaction with heat release. the technical causes of getting out of control of these reactors are analyzed. hazardous effects of the leakage of chemical reactants both on human and environment, and the existing problems in current safety technological measures are also discussed. the cooling method of jet vaporization based on the jet principle and the direct cooling by non - vaporized liquid are introduced. the development trends of the safety technology for chemical reactors are analyzed

    文摘:從放熱化學反應的安全技術觀點出發，分析了放熱化學反應器失控的技術原因、化學反應物泄漏對人員和環境造成的危害、現有安全技術措施存在的問題；介紹了基於射流原理的噴射汽化和非汽化冷卻液體的直接冷卻方法；還展望了化學反應器安全技術的發展方向。
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