電流轉換比 的英文怎麼說

中文拼音 [diànliúzhuǎnhuànbǐ]
電流轉換比 英文
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  • 電 : Ⅰ名詞1 （有電荷存在和電荷變化的現象） electricity 2 （電報） telegram; cable Ⅱ動詞1 （觸電） give...
  • 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...
  • 轉 : 轉構詞成分。
  • 換 : 動詞1. （給人東西同時從他那裡取得別的東西） exchange; barter; trade 2. （變換; 更換） change 3. （兌換） exchange; cash
  • 比 : Ⅰ動詞1 （比較; 較量高下、 長短、距離、好壞等） compare; compete; contrast; match; emulate 2 （比...
  • 電流 : current; galvanic current; electric current; electricity; current flow電流保護裝置 current protec...
  • 轉換 : change; transform; convert; switch
  1. The bias magnetic field of the bias coil driven by bias current and small signal test current, results in the induced signal of the control coil. the terminal voltage of the control coil is detected by the test circuit. then the signal containing the information of rotor displacement is obtained, from which we can get the dc voltage signal proportional to the rotor displacement through half - wave rectification circuit and low pass circuit. this dc signal is put into a pid controller to get the control signal of the rotor displacement

    偏置測試電路向偏置線圈輸入偏置電流和小信號測試電流，兩者產生的偏置磁場在控制線圈產生感應信號，檢測電路檢測控制線圈端電壓並提取含有轉子位移信息的電壓信號，該信號經半波整流電路和低通濾波電路后得到與轉子位移成正比例的直流信號，再由pid控制器轉換為轉子位移的控制信號，最後控制信號輸入功放電路產生控制電流，實現閉環控制。
  2. However, the refractive index will increase with the increase of the flow ratio of sifu / nhs, slightly increase with the increase of substrate temperate, and decrease with the increase of rf power. by measuring the passivation results of hydrogen plasma and sinx thin film, we found an evident improvement of minor carrier lifetime in polycrystalline silicon after hydrogen plasma treatment, although it has little to do with the annealing temperature and time. the hydrogen contained in sinx thin film can enhance the carrier mobility of monocrystalline silicon, but after annealing at high temperature the mobility turns down

    通過測試氫等離子體鈍化和氮化硅薄膜鈍化的效果，實驗還發現氫等離子體處理對多晶硅材料的少子壽命提高作用比較明顯，但是這種提高作用與處理溫度以浙江大學碩士學位論文王曉泉2003年5月及時間的關系不大；氨化硅薄膜中的氫對單晶硅的載流子遷移率提高有一定作用，但經過高溫處理后這種作用消失；氮化硅薄膜能提高單晶硅和多晶硅的少子壽命，具有表面鈍化和體鈍化的雙重作用；氫等離子體和氮化硅薄膜都能有效地提高單晶和多晶電池的短路電流密度，進而使電池效率有不同程度（絕對轉換效率0
  3. They are voltage scaling, current scaling and charge scaling. by compare, current scaling dac is the most fast and occupies the least area. the current - steering structure is a type of improved current scaling structure

    傳統dac的轉換按其縮放方式進行分類，主要有:電流按比例縮放、電壓按比例縮放和電荷按比例縮放，通過比較可知，電流按比例縮放轉換速度快且佔用晶元面積小。
  4. The nonlinear problem is ubiquitous and is difficult to solve in electro - hydraulic servo system. it is caused by the throttling property, because of the existing of the servo valve, proportion valve and throttling valve, by the dead band, the back lash and so on

    非線性是電液伺服系統中普遍存在且至今沒有很好解決的問題，這些非線性主要由電液轉換和控制元件（伺服閥、比例閥或節流閥）的節流特性和液壓動力機構的滯環及死區等因素引起。
  5. To accept the current signal from high negative voltage circuit, the analog ground is raised to a certain positive voltage, which makes it possible for the signal amplitude to be compressed at the same time of its polarity reversion. a pi control program special for laser gyro current control is brought forward according to the conventional pid control method, in which the control signal is figured out corresponding to the difference between the sample and the reference value by turn of proportion - short step integral - long step integral. and at the end of this paper, a comparison of system performance on different conditions is made and the key elements influencing system performance are educed

    利用集成a / d 、 d / a轉換器的新型晶元aduc824 ，實現了電流（電壓）采樣?數據處理?電流控制的閉環控制結構；地電位的抬升解決了a / d轉換器對負高壓迴路電流采樣時的輸入范圍匹配問題；控制信號反相的同時進行幅度壓縮，使得輸出調整電壓的解析度提高；根據常規的比例?積分?微分（ pid ）調節模型，針對陀螺系統的特性，給出了一種可以滿足系統要求、據采樣值偏差大小進行的比例?大步長積分?小步長積分、分層次比例?積分演算法；不同條件下系統穩流性能的對比、分析在論文最後給出，並據此找出了決定該系統穩流精度的關鍵因素，提出了系統的改進意見。
  6. Air filtration portfolio, air filters, valve, oil mist machine, filter valve, oil mist separator, micro - mist separator, stability activated solenoid valve, pressure gauge, micro - valve and vacuum valves, links the release of the closure - pressure valves, and pipe connection, a one - way valve, t - shelves, shelves, brackets, diaphragm - type flow switches, blades type flow switches, further growth actuator, the valve lock, precision valve, pressure switches, mechanical pressure switches, pneumatic control ratio positioning devices, and electric - gas ratio positioning devices, and telecommunications - pressure converters, electro - pneumatic proportional valve, filter valve, shuttle valve, gas - electric relay and gas indicator, delay pneumatic valve and cylinder fcl, plumbing fcl, mufflers and exhaust cleaner, the excess flow valve with silencer, a one - way valve, rapid valve, rapid joints, rapid valve with fcl, rapid joint sub - cluster gas, micro joints, gas pipes, pipe from the devices, and helical coils, pipes, channels, scissors, multiple fastener, high - speed rotary joint, 10000 threaded joints, and insert the tube joints, rotary joints began, 68. 25 rapid joints and hoses, hose fittings and rapid non - electrostatic

    空氣過濾組合空氣過濾器減壓閥油霧器過濾減壓閥油霧分離器微霧分離器穩定啟動電磁閥壓力表微型減壓閥減壓氣閥三通釋放式截流閥壓力開關管接頭單向閥t型隔板隔板托架膜片型流量開關漿葉型流量開關增速繼動器鎖定閥精密減壓閥壓力開關機械式壓力開關氣控比例定位器電-氣比例定位器電訊號-氣壓轉換器電-氣比例閥過濾減壓閥梭動閥氣-電繼電器氣源指示器氣動延時閥氣缸限流器管道限流器消聲器排氣潔凈器限流閥帶消聲器單向止回閥快速排氣閥快速接頭快速排氣閥帶限流器快速接頭集束分氣微型接頭氣喉管喉管脫離器螺旋管排管管道剪刀多管扣件高速旋轉接頭萬用螺紋接頭插入式管接頭旋式緊鎖接頭難燃性快速接頭和軟管不帶靜電快速接頭和軟管
  7. General speaking, the large number of signal types to be digitalized has led to a diverse selection of data converters in term of architectures used, bits of resolution achieved and sampling rate employed

    一般而言，大量需要數字化的信號要求有各種不同結構、不同解析度、不同采樣率的a d數據轉換器來實現。在比較了各種模數轉換器的結構和優缺點之後，本項目決定採用流水線式（ pipelined ）的電壓型結構。
  8. The system can simulate the transfer process of photo - thermal and thermal - electric at a given parameter setting of structure, environment and circuit. on the basis of circuit structure, the calibration, parameter adjusting and signal readout can be simulated, the vary process of readout circuit, readout voltage, optical gain, optical gain rate, and uniformity can be given. in addition, all kinds of character parameters of device can be forecasted

    本論文根據umbirfpa的原理，建立它的軟體模擬系統，它可以根據給定的結構、環境、電路設置等參數首先模擬光熱、熱電轉換過程，並可根據電路結構，模擬校準、參數調節並讀出信號，給出讀出電流和電壓、光學增益、光學增益比、非均勻性等各特徵量的定量變化過程，預測製成后器件的各種性能參數。
  9. About the transducer between rotor and power source, the paper uses a cycloconverters, comprising 36 thyristors, and analyzes the control of circumfluence, the method of cosine crossing, the producing of trigger pulse, zero current detecting, commutating logic control and its mathematical model

    對雙饋電機轉子側所接變頻器類型，本文也進行了對比分析，對選用的循環變流器的原理還作了進一步的分析，包括環流控制方法、餘弦交截法原理、觸發脈沖產生、零電流檢測和換向邏輯控制等部分，並給出了其數學模型。
  10. The main module of sensorless pmsm vector control such as voltage sensing, current sensing, smo rotor position estimation, speed calculation, generation of sine and cosine, vector coordinate transformation, pi regulators, svpwm vector modulation are all accomplished in the pwm interrupt service routines

    永磁同步電機無位置傳感器矢量控制的主要模塊如電壓采樣、電流采樣、滑模轉子位置估算、速度計算、正餘弦值生成、矢量坐標變換、比例積分調節器、空間電壓矢量脈寬調制等都是在pwm中斷服務子程序中完成。
  11. For the current source supply, the current waveforms are much easy to control though it has more complicated main circuit and more voltage harmonics

    電流源方式主迴路比較復雜（需要將電壓源轉換為電流源） ，但電機電流波形容易控制， emi問題容易解決。
  12. According to the relationship of the angle of the maximum torque and the q axis, the reluctance torque for salient pmsm is made full use of and the sator current amplitude is reduced by a large percentage, so that the system robustness is greatly increased. at the speed loop, this paper presents a single value model algorithmic control strategy which is the simplied form of normal model algorithmic control and has less computation work than the latter, so the real - time performance is very good

    對于嵌入式pmsm ，根據在電流幅值一定的條件下最大輸出轉矩與（為等效電流矢量和q軸之間的相位角）之間的關系，將磁阻轉矩轉換為輸出轉矩從而提高了輸出轉矩，改善了系統的控制性能；在速度環採用單步模型演算法控制，其計算量比較少，提高了系統的實時性和魯棒性。
  13. Firstly, this paper introduces the asynchronous motor model, and compares it with the dc motor ’ s. then the paper studies the principle of vector control, and proposes an improved current model of rotor flux observer. this paper also studies the three - level inverter ’ s topology, working principle, the neutral - potential unbalance mechanism and its controlling strategy. the paper especially studies the svpwm in details. the interface between the vector control and the three - level inverter is studied in details, including the generation of reference voltage vector, its judging of the sector and triangular regions, and the working mechanism after it sent into three - level inverter. when synthesizing the reference voltage vector, select the vector which only includes p and o states as the starting vector, thus eliminate the vector shift problem when sector changes. this paper fully takes advantages of the powerful functions of matlab / simulink to set up the simulation model. this construction is very explicit. the simulation results verify the inverter voltage output is correct, the rotor flux is steady, the asynchronous motor ’ s dynamic and steady state performances and speed modulation are excellent

    本文首先介紹了異步電機的數學模型，在此基礎上將異步電機的數學模型與直流電機的數學模型進行了比較;然後介紹了矢量控制的基本原理，採用了一種改進的轉子磁鏈電流型觀測模型;對三電平逆變器的電路拓撲、工作原理、中點電位不平衡的機理及控制方法進行了介紹，詳細分析了空間矢量脈寬調制策略。本文對異步電機的矢量控制與三電平逆變器之間的介面進行了詳細的研究，包括:參考電壓矢量的形成、所落扇區與具體小三角形區域的判斷、送入逆變器之後的工作機理。在參考電壓矢量的合成時，選擇只包含p 、 o狀態的空間電壓矢量作為起始矢量，解決了扇區切換時的矢量突變問題。
  14. It can also determine the fault spot and reason. this technology has been used in some technological fields and proved efficient. it has promoted the revolution of maintance system and the historial protection is replaced by preventive maintenance. with this technology, we can improve the reliability of machine and decrease the maintance fee. recently, reserch has pick up a fervent pace in the area of fault diagnosis of electrical machines. the paper simply analyzes the fault reason of electrical machines, stressly describes and explores the methods of condition monitoring and fault diagnosis such as partial discharge, stator current, rotating speed, vibration etc. fault prognosis is now include diagnostic feature, reason, spot. prodigious improvement in signal processing hardware and software has made this possible. primarily, these techniques depend on locating specific harmonic components of the fault. these harmonic components are usually diffirent for diffirent types of faults. automated tools such as fuzzy logic based system is also simply presented in the paper

    本文從絕緣結構的故障機理入手，以絕緣結構故障的典型特徵? ?局部放電為研究對象，重點討論局部放電的在線監測方法、適用場合併比較它們的優缺點；在分析籠型異步電機轉子斷條在線監測的定子電流監測方法后，根據其缺陷，本文探討了溫升不平衡法、希爾伯特變換數字濾波、小波包分析法的原理及優點；以電機軸承、氣隙偏心等故障為研究對象，通過對電機振動和轉速頻率的檢測，診斷電機的故障類型；本文的重點工作是將人工智慧技術中的模糊技術應用於電機的狀態監測和故障診斷中，力求使電機故障診斷更接近人工智慧化；最後，本文對電機狀態監測和故障診斷系統進行了硬體和軟體初步設計，為實現預測維修提供了有效的技術手段。
  15. In this paper, the principles on vlsi realization of one - dimension cwt are expounded, and the relevant methods of the implementation are classified and compared with each other. and then, a novel method of implementing one - dimension continuous wavelet transform using switched - current circuit is proposed, in which the continuous wavelet transform is implemented by the parallel structure of biquadratic functions realized with switched - current circuits on the basis of approximation theory of network function

    本文闡述了小波變換vlsi實現的原理，並對相關的實現方法進行了分類和比較，提出了一種新的利用開關電流電路實現任意一維連續小波變換的方法，基於網路函數逼近理論，將連續小波變換轉化為雙二次函數並聯電路結構，並用開關電流技術實現。
  16. In order to validate the theoretical investigation, experimental motor sampled signal ( the voltage and the current ) is conversion to digital quantity and given to observer for estimating speed. the comparative results of estimated speed and actual speed show that both are in good agreement

    為了驗證理論研究的正確性，本文將實驗中的電機采樣信號（電壓和電流）轉換為數字量后加在觀測器上估計轉速，並把結果和實際電機轉速作了對比，結果表明穩態下兩者很好地一致。
  17. It compared some of linearization methods of platinum resistance ' s characteristic. it introduces a new subsection linearization method : unequal distance arithmetic, it improves the measure precision and decrease the calculation load. in the voltage and electrical current measure section, it use a measure chip which includes a / d conversion, dsp and arithmetic procedure, so it improves the mearsure precision greatly

    在前端的檢測部分，分別對溫度檢測及電壓電流采樣進行了研究，在溫度檢測中對常用的幾種鉑電阻的特性的線性化方法進行了比較，提出了一種新型的分段線性化方法：非等距演算法，既提高了精度又減少了計算量，具有新意；在電壓電流測量中，採用了一種內置a / d轉換、 dsp 、演算法程序等的測量晶元，大大提高了測量精度。
  18. Abstract in this paper the phase commutation and current curves of brushless motor variable - speed system are studied. according to the results that the pulsating torque is influenced greatly by the ratio of the direct current supply voltage and the electromotive force of the motor, an approach to reduce the pulsating torque is presented

    本文通過對無換向器電動機模型的換相過程和電流波形的研究，得到換相轉矩波動受直流電源電壓和電動機電動勢幅值的比（ u / e ）的影響較大的結論並獲取了最佳u / e ，同時通過模擬研究了電流波形，提出了減小轉矩脈動的控制策略。
  19. This paper analyses the type, function and characteristics of usual proportional control valves and raises a new modificative version in the light of their drawback. that is, basing on the principle of flow amplification and electrical feedback and throughout calculation and analysis on flow closed loop control and pressure flow combination., determination of the minimum controlled pressure difference as well as flow controlling range and structure of main valve and research of the dynamic and static characteristic, the paper puts forward control principle of " flow - load pressure change - displacement revision " and pressure / flow double closed loop, and further expounds that using a proportional controller and a electric mechanical transducer can separately serve the control function of pressure or flow as well as flow pressure combination

    本論文分析了目前常用比例閥的類型、功能、特性，並針對其不足提出新的改進方案，即：以流量放大，電反饋兩個原理為基礎，通過對流量閉環控制及壓力流量復合的計算分析、確定上最小控制壓差及流量控制范圍，確定主閥結構、功能特性研究等，提出了「流量? ?負載壓力變化? ?位移修正」的控制原理和壓力流量雙閉環控制原理，並進一步論述了利用一個比例控制器和一個「電?機械轉換器」就可完成獨立的壓力或流量控制功能以及流量壓力復合控制功能。
  20. Kvm switches are popular among users who have upgraded their home pc systems and want to still use their old computers without investing in a second keyboard, monitor and mouse

    Kvm轉換器在希望升級家用個人電腦但希望保持原有電腦，不想投資鍵盤，監視器和鼠標的人中比較流行。
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