initial voltage 中文意思是什麼
initial voltage
解釋
起始電壓-
For the bldcm which has a pseudo - sinusoidal back - emf waveform, this dissertation presents a svpwm control method using six discrete position signals for minimizing the torque ripple. the main aspects for the implementation of this method are analyzed, including the initial orientation of the voltage vector, reasonable choice of the impedance angle and the advance commutation angle, and estimation of the successive rotor positions
針對反電動勢類似正弦的準正弦波反電動勢無刷直流電動機，本文提出一種基於六個離散位置信號的自同步svpwm （電壓空間矢量法）控制方法，用以削弱電磁轉矩脈動，分析了實現這種方法的主要控制環節，包括起動時電壓空間矢量的初始定位，阻抗角與電流超前角的合理選擇以及連續轉子位置的估計等。 -
In order to solve the problems of flux estimation using the voltage model, such as the initial value and the drift of pure integrator, a flux - observer - based method is applied
利用磁通觀測器，可避免用電壓模型推算轉子磁通時遇到的積分運算問題（初始值確定和誤差積累引起的積分漂移） 。 -
At the initial stage of planar technique, b was employed as ideal diffusion impurity in base - region of npn si planar devices because of the match of its solid - solubility and diffusion coefficient in si with those of p in emission - region, and the good shield effect of sio2 film to b. but because of the relatively large solubility ( 5 1020 / cm3 at 1000 ) and the small diffusion coefficient, the linear slowly - changed distribution of acceptor b in pn junction can not be formed, which could not cater to the requirement of high - reversal - voltage devics. thereafter b - a1 paste - layer diffusion technology and close - tube ga - diffusion technology had been developed, while the former can lead to relatively large the base - region deviation and abruptly varied region in si, which caused severe decentralization of current amplification parameter, bad thermal stability and high tr ; the latter needed the relatively difficult pack technique, with poor repeatability, high rejection ratio, and poor diffusion quality and productio n efficiency
在平面工藝初期，由於b在硅中的固溶度、擴散系數與n型發射區的磷相匹配， sio _ 2對其又有良好的掩蔽作用，早被選為npn硅平面器件的理想基區擴散源，但b在硅中的固溶度大（ 1000時達到5 10 ~ （ 20 ） ，擴散系數小， b在硅中的雜質分佈不易形成pn結中雜質的線性緩變分佈，導致器件不能滿足高反壓的要求，隨之又出現了硼鋁塗層擴散工藝和閉管擴鎵工藝，前者會引起較大的基區偏差，雜質在硅內存在突變區域，導致放大系數分散嚴重，下降時間t _ f值較高，熱穩定性差；後者需要難度較大的真空封管技術，工藝重復性差，報廢率高，在擴散質量、生產效率諸方面均不能令人滿意。 -
Initial recovery voltage and peak recovery voltage across the circuit - breaker have an essential affect on re - strike. for assessing performance of circuit - breaker, the higher inductance and lower inductance must be considered at the same time when testing according to theoretic analysis, the directly test circuit on switching the no - load overhead by high - voltage circuit breakers of rated voltage 252kv and below, in compliance with the correlative standard jb5871 and the test devices, and the test circuit parameters have been calculated and the many testes have been carried out
在理論分析的基礎上，考慮實驗室現有設備的情況依據標準jb5871的規定，選用合適的試驗設備，對試驗線路的參數進行計算，在實驗室建立了252kv及以下電壓等級斷路器開合線路充電電流直接試驗線路，利用該線路進行了數臺產品的試驗，分析了試驗結果，並根據試驗結果和理論基礎討論了gb t1984 - 200 《交流高壓斷路器》 （報批稿）關于開合線路充電電流試驗的有關規定。 -
The trickle charging uses small current at the initial of charging cycle to fix and protect the over - discharged battery ; after which, the battery will be charged by large constant current to allow the fast charging ; finally, the constant voltage charging is adopted to guarantee that the battery is charged to its full capacity
在充電初期採用較小的電流對電池進行預處理，對出現過放電的電池進行修復和保護;然後採用較大的恆定電流對電池充電，實現快速充電的目的;最後採用恆壓充電，確保電池充滿。 -
Abstract : on the basis of the theory of controlled phase - changes of piezoceramics, high - temperature polarizing technology makes initial working temperature a little higher than curie temperature of a sample, but the polarization voltage needed is greatly lower than the one needed in normal polarization ( only 1 / 10 - 1 / 5 ). the improved polarizing technology can make polarization more complete
文摘:壓電陶瓷的高溫極化是利用受控的場致有序化的順電鐵電相變原理，使起始極化溫度略高於樣品的居里溫度，但所需的極化電壓大大低於常規極化，僅為1 / 10 - 1 / 5 ；選擇較高的降溫升壓速率，可使極化趨于更加完全，具有常規極化工藝無可比擬的優越性。 -
Once a certain initial level is reached, this regenerative effect accelerates, taking the voltage all the way to the highest level, resulting in a spike
一旦到達某個門檻值，這個再生的效應就會加速，讓電壓一路飆到最高點而產生尖鋒。 -
At the same time, the mathematical models of the electric field and the flow field distribution were established from the theory of electrostatic enhancement of heat transfer. employed finite differential method and over - relaxation iteration method, according to certain boundary conditions in the wire - plate electrode space, the electric field and the flow field in the wire - plate space were numerically simulated under different initial velocities of r11 stream and different magnitudes of applied voltage. the calculation results agreed with theoretical analysis satisfactorily
同時從靜電強化換熱理論出發，建立了表徵線板電極間的電場和流場分佈的數學模型，並根據線-板電極間的邊界條件，利用有限差分法和超鬆弛迭代法，分別就不同氣流初速度和不同外施電壓的情況下，對線-板空間的電場和流場進行了數值模擬，計算結果與理論分析基本一致。 -
Precision voltage references are available with varying degrees of precision and initial accuracy over some operating temperature range
使用）精密電壓基準會涉及精度變化和特定范圍的整個工作溫度范圍內的初始精度。 -
An insulating lift is presented to improve the insulation property between the gripper and ground of high voltage hot - line cleaning robot, and to decrease the initial cylinder ' s working - pressure of vertical lifting mechanism
摘要提出了一種絕緣升降平臺，用於提高高壓帶電清掃機器人帶電作業時的對地絕緣性能，同時降低機器人垂直升降機構驅動油缸的初始工作壓力。 -
A novel error amplifier with initial voltage reference for series voltage regulator
串聯穩壓器基準誤差放大電路的設計 -
In this topic, the error characteristic of resistance voltage sensor was analyzed in theory, by using electric circuit analysis, the reasons which affected its error were gotten. based on theory analyses, initial structure was designed. then by using fem ( finite element method ) of simple resonance field, several structures electromagnetic field was calculated, and their amplitude errors, phase errors, maximum of electric field intensity and frequency characteristic of amplitude error were contrasted
本文從理論上分析了電阻式電壓傳感器的誤差，用電路分析法定性的研究了影響電阻分壓器誤差的因素；在理論分析的基礎上進行了電阻分壓器結構的初步設計；基於該設計，利用簡諧場的有限元方法進行了場的計算，比較了幾種結構方案的幅值誤差、相角誤差、最大場強值及其幅值誤差的頻率特性，從而得到一種最優方案；製作了分壓器樣機，並在本實驗室進行了實驗；最後，對電子電路部分進行了初步設計，並提出了抗干擾的措施。 -
The most important parameters for data acquisition systems design are initial error, output voltage temperature coefficient ( tc ), thermal hysteresis, noise, and long - term stability of the voltage reference device
對數據採集系統設計最重要的參數是器件的初始誤差、輸出電壓溫度系數、熱遲滯系數、輸出電壓噪聲、長期穩定度。 -
But often what is not obvious when reading a manufacturer ' s data sheet is how the initial accuracy of the device is affected by other key device parameters such as line regulation, load regulation, initial voltage error, output voltage temperature coefficient ( tc ), output voltage noise, turn - on settling time, thermal hyste - resis, quiescent supply current, and long - term stability
但，人們閱讀廠家的數據手冊時，因受諸如（電源電壓）線性調整率、負載調整率、初始電壓誤差、輸出電壓溫度系數tc 、熱遲滯（系數） 、靜態電流和長期穩定度等參數的影響而使初始精度往往不明顯。 -
Reactive power are calculated using the new algorithm. on the basis of analyzing different kinds of control strategies of var compensation, the paper applies the criterion of voltage and var to control switching and illustrates a improved mode of switching capacitor which can prevent the switched - capacitor from the impacting of instantaneous rush currents by means of zero - crossing triggering of scr components, and can realize auto - tracking var and auto - switching shunt capacitor bank. initial operating parameters are stored in information flash memory of the mcu using flash self - programming technique in order to decrease complexity of the circuit and improve stability
高壓智能無功補償控制器以flash型16位單片機msp430f149為控制核心，採用了一種相角實時測量的新演算法，並在此基礎上計算出了功率因數、有功和無功，減少了運算量提高了精度；在分析了各種無功補償控制策略的基礎上，以母線電壓和無功功率復合判據控制投切，並提出一種改進的電容器投切方式? ?暫態投切控制晶閘管過零觸發，避免了電容器投切時的電流沖擊；穩態運行時接觸器替代晶閘管，實現無功補償的自動跟蹤和電容器的自動投切，解決了投切時的暫態電流沖擊和穩態時可靠運行的難題；控制器的原始運行參數採用flash自編程技術，將其保存在msp430f149片內的信息flash中，簡化了硬體電路，大大提高了系統的可靠性。 -
Abstract : the initial charge - process of dc capacitor and the steady working state of active voltage - source - inverter power filters are analyzed in this paper, and four new parameters are proposed to judge the working performance of active power filters and to aid their design
文摘:分析了電壓逆變器型單相有源電力濾波器直流側儲能電容器的初始充電過程（有源電力濾波器的起動過程）和有源電力濾波器的穩定工作狀態，並提出了判定有源電力濾波器性能、幫助有源電力濾波器設計的四個標識性參數。 -
As the temperature of pyrolysis and the soak time increasing, the carbon materials become more stacked, the specific surface area reduces, both reversible capacity and irreversible capacity decrease, the initial coulumbic efficiency increases, and the hysteresis in the voltage profile between charge and discharge is cut down
隨著熱處理溫度的升高和恆溫時間的延長，所得炭材料的有序化程度增加，比表面積減小，可逆嵌鋰容量與不可逆容量均減小，首次充放電效率增大，電壓滯后現象得到抑制。 -
Alkaline zinc - manganese battery is widely used all over the world it has good performance of storage ， low cost ， stable discharge and convenience of carrying the sealing of the battery is a crucial factor to the performance of the battery due to the disadvantages of present sealants ， leakage of electrolyte often happens what ’ s more ， the sealing capability affects the performance of the battery the way to raise the sealing capability is to search for a good additive ， which can improve the sealing capability through adding according to chemical principles ， this article picks out ptfe and nylon66 as additive adding ptfe or nylon66 into the pitch can improve the sealing capability of the pitch at the same time ， the temperature ， the time ， the amount of addictive ， the way to drop temperature and the time of churning all should be considered by testing the constitutions ， softening point ， moving degree and length of needle of various pitch samples ， we can compare the properties of different sealants can be studied by using of x - ray, the constitutions of the pitch can be indicated which can help us to explain these changes this article includes ： testing the constitutions ， soften point ， moving viscosity and needle penetration of various pitches ； raising the sealing capability by adding ptfe nylon66 into the pitches ； testing the constitutions ， soften point ， moving viscosity and needle penetration of raised samples ； analyzing and discussing the basic principles of this method it is showed that soften point ， moving viscosity and needle penetration of pitches are increased by adding ptfe nylon66 and the discharge time ， initial voltage ， capacity of battery with pitch raised by nylon66 are good and get to the requirement of gb t7 1 1 2 in a11 the method proposed in this article is available in practical industry use
通過測定改進瀝青的軟化點、運動粘度和針入度等指標參數來比較不同的添加劑及不同的添加條件對瀝青封口性能的影響。本論文的主要研究結果為：系統測試了多種瀝青樣品的組成、軟化點、運動粘度、針入度；對市售瀝青分別添加聚四氟乙烯乳液、有機硅樹脂和尼龍66進行改進，制備了改進產品；對改進瀝青的組成、軟化點、運動粘度、針入度進行了測試和比較；使用改進瀝青組裝成電池並對電池進行恆電流放電測試、短路電流測試和電池漏氣、漏液性能的測試；對瀝青改進的原理進行了分析和討論。實驗結果表明：在瀝青中添加尼龍66和聚四氟乙烯乳液對瀝青的封口性能有明顯的提高；通過對工藝條件的不斷改進，目前的工藝條件已完全可以用於實際生產操作；以添加尼龍66改進的瀝青為封口劑組裝成的電池完全滿足堿錳電池生產的需要，且電池電容量、短路電流等指標均達到gb t7112標準要求；本文提出的改進方案，通過驗證是一種效果好、實用性強的方法。 -
Study shows finishing initial design of gun we can optimize the beam performance by adjusting magnetic field distribution, gun geometry, cathode magnetic field, magnetic field compression ratio, anode voltage, cathode emitter temperature and so forth
研究表明，完成電子槍的初始設計后，可以通過調整磁場分佈、電子槍結構、陰極磁場、陽極電壓等因素，優化電子注的性能。
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