電位差計法 的英文怎麼說

中文拼音 [diànwèichājìfǎ]
電位差計法 英文
potentiometer method
  • 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...
  • 位 : Ⅰ名詞1 （所在或所佔的地方） place; location 2 （職位; 地位） position; post; status 3 （特指皇帝...
  • 差 : 差Ⅰ名詞1 （不相同; 不相合） difference; dissimilarity 2 （差錯） mistake 3 [數學] （差數） differ...
  • 計 : Ⅰ動詞1 （計算） count; compute; calculate; number 2 （設想; 打算） plan; plot Ⅱ名詞1 （測量或計算...
  • 法 : Ⅰ名詞1 （由國家制定或認可的行為規則的總稱） law 2 （方法; 方式） way; method; mode; means 3 （標...
  1. In digital relay, the percentage of noise will increase rapidly with the increase of sampling rate when derivation calculus is substituted by sampled difference term. to solve this problem, a new method using fragment function integrated with the least square algorithm is proposed in this paper. the influence of white noise is greatly reduced and the accuracy of the dead angle calculation is nicely improved after adopting the new method

    在數字式保護中，如果用差分代替求導將導致噪聲的百分比誤差隨著采樣頻率的提高而劇增，本文對此進行了分析並提出了用分段樣條函數最小二乘法來計算電流波形的導數值，以便在提高采樣率的同時降低噪聲誤差的影響，並將其應用於基於32位浮點dsp的新型變壓器保護裝置。
  2. Sampling and analysis of iron, steel and other ferrous metals - methods of analysis - determination of chromium - ferrochromium and ferrosilicochromium : potentiometric method

    鐵鋼和其他黑色金屬抽樣與分析.第3部分:分析方法.第10節:鉻含量測定.第4小節:鐵鉻合金和鐵硅鉻合金:電位差計法
  3. Abstract : in fourier transform profilometry, because of the nonlinear relationship between the irradiant incident upon a ccd dete ctor andthe voltage it outputs, it will cause phase evaluation errors. here, we ex plain the errorsource by theoretical deducing, then make a simulation. at last, a method to decrease thiserror is put forward

    文摘:在傅里葉變換輪廓術中，由於ccd探測器光電響應的非線性，將在測量中引入高次項，從而對相位的求解造成較大誤差，通過理論的推導定性地解釋了誤差的來由，並用計算機進行了模擬計算，最後提出了減小誤差的方法。
  4. Digital simulation shows that the improved algorithm ' s estimate mean and relative estimate er - ror are better than those of the original unimproved algorithm, so the improved algorithm can be widely used in storage reliability research

    數字模擬結果顯示，改進演算法的估計均值和相對估計誤差明顯優于改進前的條件中位數演算法，可廣泛地應用於電子產品的貯存可靠性研究。
  5. In this system, the movement of the step - electromotor is controlled by computer, and then the dial pointer is drove by the step - electromotor. at the same time, these images of the analog instrument are took by high precision ccd video, and then these images will be processed by the computer, using some image - processing algorithms such as image segmentations, threshold identification, image binarization, areas labeling, dial center - point identification, useful areas identification & abstracting, and areas thinning, etc. followed this, the dial pointer of the “ circle ” is able to be located. at last, the dial pointer position will be recognized by the computer

    本系統由計算機控制步進電動機的運動，進而驅動指針式儀表表針的運動，並且通過高精度ccd攝像機實時獲取表盤圖像數據，同時進行表盤圖像的相關處理，包括圖像分割，閾值確定，圖像二值化，區域標記演算法，圓心擬合，有效區域識別提取，區域細化等，最終快速識別出表盤指針所處位置;最後，根據國家指針式儀表類檢定規程所制定的演算法計算出該儀表的相關誤差，檢定指針式儀表的各種精度，通過這些數據判斷該儀表是否合格，列印該儀表的檢定結果報表。
  6. In general, a precise resistor is in series with one of the resistors in wheatstone bridge to compensate the zero offset, and the other one is in parallel with another arm of the wheatstone bridge to compensate thermal zero drift. based on this principle, in this paper, a compensation method based on virtual instrument technology has been put forward. actuated by current source, a good calculation method of compensation resistors and their position in the bridge is deduced

    本文基於串並聯電阻補償法的原理，提出了一種基於虛擬儀器的誤差補償方案，推導了在恆流源供電下可以精確的計算出補償電阻大小和補償位置的演算法，並且在虛擬儀器軟體平臺labview上完成了數據採集、處理、顯示等軟體的設計，經過實驗的驗證，對傳感器的零點溫度漂移補償取得較好的效果，而對靈敏度溫度漂移的工藝補償亦有一定的效果。
  7. Abstract : a new clock - driven eco placement algorithm is presented for standard - cell layout design based on the table - lookup delay model. it considers useful clock skew information in the placement stage. it also modifies the positions of cells locally to make better preparation for the clock routing. experimental results show that with little influence to other circuit performance, the algorithm can improve permissible skew range distribution evidently

    文摘:提出了一種新的時鐘性能驅動的增量式布局演算法，它針對目前工業界較為流行的標準單元布局，應用查找表模型來計算延遲.由於在布局階段較早地考慮到時鐘信息，可以通過調整單元位置，更有利於后續的有用偏差時鐘布線和偏差優化問題.來自於工業界的測試用例結果表明，該演算法可以有效地改善合理偏差范圍的分佈，而對電路的其它性能影響很小
  8. Digital temperature transmitter, digital level, explosion - proof electric contact manometer figures generally used manometers, vacuum table, table vacuum pressure, oxygen forms of electric contact manometer, explosion - proof electric contact manometer seismic contact ammonia electricity connections. contact monometers assisted magnetic, seismic, heat - resistance, acid and alkali resistance, chlorine, sulfur - resistant, stainless steel pressure gauge. divide manometer shenyang city, the total, precision manometer, out of the wind pressure gauge, film boxes pressure gauge, diaphragm pressure gauge

    主要產品包括：數字壓力表，數字膜盒壓力表，數字溫度表，數字壓力變送器，數字溫度變送器，數字液位計，數字防爆電接點壓力表，一般用壓力表真空表壓力真空表氧氣表電接點壓力表防爆電接點壓力表耐震電接點氨用電接點磁助式電接點壓力表耐震耐高溫耐酸耐堿耐氯耐硫全不銹鋼壓力表隔膜壓力表沈陽市優質產品精密壓力表出風壓力表膜盒壓力表膜片壓力表全不銹鋼膜片壓力表鈦壓力表及出口全不銹鋼，充油全不銹鋼系列壓力表，壓差表，壓力變送器，各種軸向軸向帶邊法蘭連接等多種形式。
  9. It creates the model of layer soil by using the cdegs software, analyses the resistance error which is measured by traditional three - poles way, measures the grounding grids resistance and soil resistance rate of hejin power plant, creates the electromagnetic model of layer soil and grounding grids model of hejin power plant, calculates the step voltage > touch voltage n voltage distribution of earth surface in fault of hejin power plant. in the end, it compares the measuring value and calculating value of grounding grids resistance in hejin power plant

    本文利用cdegs軟體建立分層土壤接地模型，對傳統三極法測量接地電阻誤差進行分析；對河津電廠接地網接地電阻和土壤電阻率進行測量；建立河津電廠分層土壤電磁模型和接地網模型；計算河津電廠接地網電阻和事故狀態下跨步電壓、接觸電壓和地表電位分佈；最後對河津電廠接地網電阻實測值與計算值進行比較分析。
  10. In order to make the sensitivity of 2 - demension accelerometer along the two main arbors almost identical, symmetric four - beam structure that embeds a double - sides interdigitated differential capacitive with puckered beam in two directions was used as sensitive component. in addition, the differential capacitive accelerometer fabricated by bulky silicon micromechanical technique has high sensitivity, wide measurement scope, less nonlinear error, and simple converting circuit. then, the structure parameters of the sensitive component were calculated and stimulated, which results in a set of the optimized structure design parameters, main fabrication procedure and several key fabrication technology

    為使二維振動傳感器在兩主軸方向的靈敏度大致相同，敏感元件採用高度對稱的四梁結構，其中每個軸向上均採用帶折疊梁的雙側叉指電容結構，採用體硅微機械工藝製作的高深寬比叉指電容式敏感元件，具有高靈敏度、寬量程、非線性誤差小、外圍電路簡單等優點;對設計的敏感元件結構參數進行了計算，並利用有限元法進行了模擬分析，根據模擬結果得出了優化參數;在確定敏感結構的基礎上，研究了敏感元件採用體硅微機械加工工藝製作的工藝流程和關鍵工藝技術;對敏感晶元內部的c - v介面電路進行了原理設計與分析，利用差動測量技術得到由振動引起的微小電容變化量，經c - v介面電路進行相位調制處理，然後通過解調輸出與加速度成正比的電壓信號。
  11. Comparing and analyzing the synchronous control strategy, which brings up the new method to control the double un - symmetry jars proceed synchronously with the combination of proportional valve and servo valve, which forms closed loop control ; basing on the above methods, models are made to get mathematics models of position control system and to analyze system model theoretically by using pid controller, we can realize regulating parameters, minimizing synchronous errors and enhancing the dynamic performances ; the simulink tool box in matlab software is used to imitate the system according to the model, which not only makes the result visual and easy to adjust the parameters in interactive way but also lets us understand the effects of different parameters and optimizes the dynamic properties. the theory of plc control in dshp is discussed after advanced understanding of the system movements. hardware design and general regulation are given on the base of siemens company products s7 - 200 plc

    本文根據大量的國內外文獻，對研配液壓機的工作原理及設計結構進行了簡介；對位置同步的控制方法進行了比較分析，提出比例閥和伺服閥復合控制的閉環結構來對非對稱雙缸進行同步控制電液比例同步控制方案；在此基礎上著重對比例閥控非對稱缸建模，最後得到位置控制系統的總體數學模型，從理論上對同步系統動態特性進行了分析，並用pid控制器進行參數整定，減小雙缸同步誤差、提高系統的動態響應性能；其中控制性能的分析藉助于matlab軟體中的simulink工具箱，由已建立的數學模型形成模擬模型，得到可視化的模擬結果，從而利於交互方式下調整參數，了解不同的參數對系統的影響，優化同步系統的動態性能；在深入了解系統的動作特性后，對plc控制研配液壓機的原理進行了探討，針對siemens公司s7 ? 200型plc給出了硬體設計的總體規劃，編制出研配液壓機動作控製程序，在編程中著重研究位移傳感器與plc的通訊、雙缸同步運行的pid控制在plc上的實現及bcd碼撥盤輸入程序的植入問題。
  12. Supported by heilongjiang province natural science foundation projects " research on the errors mechanism of time division a. c. power measurement " ( no. e9719 ), " research on theory of analog digital mixed sampling power energy measurement " ( no. e01 - 15 ) and foundation for university key teacher by the ministry of education " the research on the low audio frequency a. c. power measurement smart instrument " ( no. 1087 ), in this dissertation it is made that a systematic and deep study on power measurement model errors and instrument errors about analog sampling, digital sampling and mixed sampling measurement, and fully experiments about mixed sampling measurement

    本學位論文在黑龍江省自然科學基金資助項目「時分割交流功率測量原理誤差產生機理的理論研究」 （編號： e9719 ） ， 「模擬數字混合採樣功率與電能測量的理論研究」 （編號： e01 - 15 ）和教育部高等學校骨幹教師資助計劃項目「中頻電功率測量智能儀器的研製」 （編號: 1087 ）的資助下，以電功率模擬采樣測量、數字采樣測量和混合採樣測量方法為對象，對電功率測量的原理誤差和儀器誤差進行了系統和深入的理論研究和有關的實驗研究。
  13. However, df pre - processing is not required in a interferometer direction finder. it only makes use of the phase relations or differences of sensors disposed at different position. azimuth and elevation are caculated from the phase differences or displayed directly on a crt drived by the voltage or current from the phase differences

    干涉儀測向不必進行測向信號預處理而是直接或間接求取在空間上分開的傳感器上感應電勢之間的相位關系，即干涉相位差，方位角或仰角是直接由干涉相位差計算得到，或將兩基線正交的天線陣的干涉相位差轉化為驅動電壓（電流）分別加到crt陰極顯示器的垂直偏轉線圈和水平偏轉線圈，模擬顯示出來波方位，干涉儀測向為典型的相位測向方法。
  14. In this paper, based on the previous research result, by using theory of electrochemical mechanism, probability math, reliability theory, basic theory of pre - stressed concrete structures, structure optimum design, theory of control, maintenance strategy decision theory of structures and etc., the research on steel corrosion monitoring method, structural corrosion damage model, reliability analysis, the maintenance and repair method that based on corrosion control, the optimum structural design method of new bridge structures that consider durability and the optimum maintenance strategy decision theory are carried out. 2. corrosion mechanism and monitoring technique it is widely accepted that the corrosion of steel in concrete structure is a electrochemical process, include the formation of anode & cathode area on metal surface and potential difference between different ' area

    本文在已有理論研究的基礎上，針對預應力混凝土橋梁建設及使用中存在的影響結構耐久性的實際問題，綜合運用電化學理論、概率理論、結構可靠性理論、混凝土和預應力混凝土結構基本理論、結構優化理論及控制維修決策等理論和方法，詳細研究了基於電化學理論的鋼筋銹蝕檢測方法、預應力混凝土橋梁結構的腐蝕損傷模型、可靠性分析、基於腐蝕控制的維修方法、橋梁結構方案選型及優化設計以及在役橋梁結構的優化維修決策等問題第二章混凝土結構的腐蝕機理及檢測技術目前普遍認為，結構混凝土中鋼筋的腐蝕是一種電化學的過程，包括在金屬表面形成陽極（腐蝕）和陰極（鈍化）區域以及不同區域間的電位差等。
  15. This paper is based on the pingpong bridge field ground protection, it presents one point to ground protection scheme which include the self - checking method of switches. the two point to ground protection scheme presents self - adapting fault location warp criterion after evaluating the effect on the calculation of fault location made by the change of transient resistance in the process of bridge switch. in order to make up the shortcoming of location warp criterion, this paper presents a comprehensive scheme into which integrate the second harmonic criterion

    本文針對乒乓式保護，結合開關自檢方法提出了完整的一點接地保護方案：在兩點接地保護方案中估算了開關切換過程中過渡電阻變化對接地點位置計算的影響，提出了故障位置偏差式兩點接地的自適應判據，為了彌補該判據的缺陷，提出了結合二次諧波輔助判據的綜合方案。
  16. Methods after rats were sacrificed by mechanic asphyxia, the reaction of rats ' gastrocnemius to variable electric stimulation at different period after death were recorded by electricphysiological method

    方法建立大鼠機械性窒息模型，利用電生理檢測儀檢測死亡后不同時間大鼠腓腸肌對不同強度的電刺激的反應性，記錄肌肉組織動作電位出觀時間，統計學分析其差異並建立回歸方程。
  17. Finally, do a lot of experiments to make a great improvement on the system and examine the validity of the amending arithmetic. the experiments show that the potentiometer no - linearity error decrease obviously and meet the demand of potentiometer production

    實驗表明，修刻后電位計的非線性誤差有明顯減小，證明所提出的修刻演算法的正確性，驗證了修刻方案和裝置的可行性。
  18. In chapter 2, the actuator ' s design is addressed particularly, which concerns three main aspects : 1. the mechanical structure analysis and design ; 2. the electrical structure design ; 3. the driving method and control. chapter 2 also discusses the problems mentioned above deeply and systematically. specifically, in the mechanical structure, a new type of structure for heat compensation are presented and validated by relevant experiments

    浙江大學碩士學位論文第三章是對gma的定性理論分析，論述了超磁致伸縮電一機械轉換器的各利『模型，包括靜、動態特性及機械模型、電磁模型等等，還就有限元法、有限差分法等數值計算方法在gma研究中的應用作了理論探討，得出了一些相關的磁場分佈曲線。
  19. In cellular envirorunents, because of the influence of several adverse factors, such as muitipath, non - line - of sight propagation, noise, interference and channel frequency characteristics, radio statistics measuremenis like tdoa, toa and aoa related to mobile position, the performance of location algorithms mny be significantly degraded and the position estimation of ms is inevitably biased

    在蜂窩網路環境中，由於受多徑、非視距傳播、噪聲、干擾和通道頻率特性等多種不利因素的綜合影響，使tdoa 、 toa 、 aoa等與移動臺位置有關的電波特徵測量值不可避免地出現較大誤差，從而使各種定位演算法的性能顯著下降，造成移動臺位置估計出現較大偏差。
  20. To understand the structure and the function of the programmable digital down - converter ( ad6620 ) deeply, to complete the design of the circuit and the hardware realization of the if digital orthogonal demodulation cell, to introduce the testing method and the testing results of the amplitude consistence error and phase orthogonality error of the output demodulation signals

    完成中頻采樣單元的電路設計和硬體實現，詳細介紹高速adc主要動態特性的測試方法和測試結果； 3完成中頻數字正交解調單元的電路設計和硬體實現，給出解調輸出i 、 q兩路信號的幅度一致性誤差和相位正交性誤差的測試方法和測試結果；
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