electric current measurement 中文意思是什麼

electric current measurement 解釋
電流測量
  • electric : adj. 1. 電的；帶電的；起電的，導電的，發電的，電動的。2. 令人激動的，緊張的，驚人的。3. 〈美口〉（樂曲的）用電吉他演奏的。n. 〈口語〉1. 帶電物體。2. 電動車輛。
  • current : adj. 1. 通用的，流行的。2. 現在的，現時的，當時的。3. 流暢的；草寫的。n. 1. 水流；氣流；電流。2. 思潮，潮流；趨勢，傾向。3. 進行，過程。
  • measurement : n. 1. 測量，計量，量度。2. 份量，尺寸，大小，寬度，厚度，深度（等）。3. 測量法。 measurement goods （按體積、容積計算的）體積貨物。
  1. Mems ( micro electromechanical system ) has become one of the most rapidly development technologies. along with the rapid development of mems techniques, capacitive sensor is used widely whose capacitance changes small, which has put forward the new request to the measurement technique. the common measure for capacitance measurement is that convert capacitance to voltage, electric current or frequency. the area of polar plate of the capacitor becomes smaller and smaller, and the total capacitance of micro capacitive sensor is usually several pico farad only. as a result, its change amount is smaller

    Mems （ microelectromechanicalsystem ）近年來發展最快的技術之一，隨著mems技術的快速發展，電容式加速度計的電容變化變化量越來越小，對檢測技術提出了新的要求。在電容式傳感器中，常用電容檢測電路是將其轉換為電壓、電流或者頻率信號。目前的微型電容傳感器的極板面積變得越來越小，電容總量只有幾個pf ，變化量就更小。
  2. We have done a serial of experiments to study the pam and anode grid with the aids of the measurement such as constant current charge / recharge, cyclic voltammetric measure ments, electric impedance spectrum and so on

    我們通過恆電流充放電、交流阻抗和循環伏安等實驗方法和測試手段對鉛酸電池的正極活性物質和板柵進行了一系列的研究。
  3. The stress induced electrical current changes with stress changing. the sensitivity of cfrc and plain concrete depends on their component, loading condition and the method of measurement. the study on mechano - electric effect of hardened cement paste provides a new method to make smart concrete structures. according to nonequilibrium thermodynamics, a mathematical model on the relatrionship between strain gradient and electric potential gradient is presented

    研究表明，碳纖維混凝土（粗骨料）的電阻隨所受荷載的變化而變化，不同組成混凝土的力電機敏特性不同，力電機敏特性可望用於混凝土結構的應力診斷，從而為智能混凝土結構的實現開辟了新的途徑。
  4. Detection and measurement device of harmonic electric energy based on harmonic power tidal current analysis

    基於諧波功率潮流分析的諧波電能檢測與計量
  5. Under windows nt and labview development environment, using the linear fit module, exponential fit module > general polynomial fit module of labview to design a method for fitting the experiment data, the results of curve fitting indicate that the purpose of general polynomial fitting is better than the rest. separating the equivalent input impedance of magnetostrictive transducers without stimulate current from input impedance of it with stimulate loop based on the results of curve fitting, and determining the syntony frequency and electric simulation network parameters of magnetostrictive transducers by this input impedance. finally, with labview network functions, realizing magnetostrictive transducer electric simulation system based on web server and discussing a scheme for this system network by datasocket. the method of this paper can more accurately determine the syntony frequency and electric simulation network parameters of magnetostrictive transducers than the testing method of syntony & anti - syntony. at the same time, discussing virtual instrument measurement system and how to realize magnetostrictive transducer electric simulation network system by labview network functions of network virtual instrument measurement development environment

    在windowsnt系統環境和labview虛擬儀器技術開發平臺下，首次利用labview中的直線擬合模塊、指數擬合模塊以及多項式擬合模塊，設計了一種對實驗所得數據進行曲線擬合的方法，對三種擬合方法進行了比較，曲線擬合結果表明，多項式擬合方法相對于其它兩種擬合方法效果更好；根據曲線擬合的結果可從帶激勵線圈的磁致伸縮換能器的輸入阻抗中分離出磁致伸縮換能器鐵芯在無激勵電流時機械振動形成的等效輸入阻抗，並由此輸入阻抗確定了磁致伸縮換能器的諧振頻率及其電氣模擬網路參數；最後通過labview提供的網路功能，實現了基於web服務器的磁致伸縮換能器電氣模擬虛擬儀器測試系統，並探討了通過datasocket技術實現該系統網路化的方案。
  6. First, the vacuum sensor suitable for vacuum degree on - line measurement in the vacuum interrupter is devised by the researches on panning discharge. then the vacuum sensor is calibrated, and also the corresponding curve which indicates that the vacuum degree respond to the current of the electric discharge is got

    首先，通過對潘寧放電原理的研究，設計了適用於真空滅弧室在線檢測真空度的真空傳感器，並對真空傳感器進行了校正，得到其真空度-離子流對應曲線。
  7. In the present grounding measurements in substations, the large electric current method is used to raise the ratio of signal to noise, but this method does not obviously decrease the measurement error. the test instruments are unwieldy, and it is easy to threaten personal safety

    在現有變電站接地網接地測量中，採用大電流測試法來減小測量誤差，其消除干擾的效果並不理想，且此方法測量設備笨重，還可能危及人身安全。
  8. The test instruments based on this method are highly precise, but costly. the author develops a grounding measurement system of substations based on the virtual instruments, which uses labview as the development software and adopts the small electric current method. the fft method is used to process the measurement data, which can decrease the measurement error

    本文作者研製了基於虛擬儀器的變電站接地網接地測量系統，該系統以labview為軟體開發平臺，採用小電流測試法，並利用快速傅立葉變換方法對測試信號進行數字濾波處理，提高了該系統的信噪比。
  9. This kind of intellectualized unit based on 87c196kc singlechip has several functions as electric power parameter measurement, over - current and earth - fault protection, communication and status monitoring for switchgears

    這種智能單元具有測量電力參數、過電流與接地故障保護、通信、開關設備狀態監測功能。
  10. Then the paper dissertates theory of parts measurement and its exercise in measurement and repair of waterway fixed assets, bases the measurement of the fixed assets on the parts, and distributes value of the vessel to hull, shafting and screw propeller, telecom facility, air - conditioning system, electric system, main - engine and subsidiary engine system, and so on. the following expenditure should be capitalized : ( 1 ) adding new components ; ( 2 ) replacing the current components, and all other expenditure be expensed

    集中闡述了船舶應按照船體、靠泊系統、主輔機系統、螺旋槳與軸系、空調系統、電氣設備、電信設備、起貨系統、救生系統等主要部件進行計價；在修理支出中，應將符合下面兩個條件的支出項目予以資本化： （ 1 ）增置新的部件， （ 2 ）現有部件的重置。
  11. - the focal point of this paper is studying the problem of cargoes ? weight measurement, besides the component of mechanical system, the component and control of electric - control system, the full - digital dc speed adjustment system and the hardware and software design of plc control system. this paper puts forward the project of current static measurement method and corrects it with acceleration dynamic measurement

    本文除分析介紹了集裝箱橋吊的機械繫統組成、電控系統的組成及控制、全數字直流調速器以及plc控制系統的軟硬體設計外，重點研究了集裝箱裝卸橋中的貨物稱重問題，提出了應用電流靜態測量法的稱重方案，並且採用了加速度動態測量法對其進行動態校正，在實際應用中取得了令人滿意的效果。
  12. In this paper, the application of dsp technology in electric power measurement meter has been studied, meanwhile analysed the error of the electronic energy meter, put forward the measure to compensate error with software method. it not only changes the precision degree of electric power measurement meter, but also avoids the disadvantage from error compensate with hardware method, it is unnecessary to adjust the sample value of voltage and electric current in circuitry

    對dsp技術在電度表中的應用進行了研究，對電度表系統的誤差進行了分析，提出了採用軟體方法來補償誤差的措施，使電度表的精度達到了設計要求，又避免了利用硬體進行誤差補償所帶來的弊端，不用在線路中調整電壓、電流采樣值，有利於生產。
  13. Firstly, this paper proposes the mathematical model and finite - element analysis model of torque motor with mf and without mf. secondly, the electromagnetic field of torque motor is analyzed using the ansoft maxwell software ; static output torque of torque motor with mf and without mf is calculated. then the rotary angle of torque motor with different input electric current and mf is measured using three - coordinate measurement device

    本文首先給出了添加磁流體和不添加磁流體的力矩馬達磁路數學模型及有限元分析模型，其次，利用ansoft公司的maxwell電磁場分析軟體進行了力矩馬達的二維和三維磁場有限元分析，對添加磁流體和不添加磁流體的力矩馬達靜態輸出力矩進行了計算，並採用三坐標位移測量儀對不同輸入電流作用下、添加不同特性磁流體時力矩馬達的轉角進行了測量，從而對輸出力矩特性進行了實驗研究。
  14. This paper studies on used the ac servo system based on ti dsp ( lf2407a ) and the foc and digital signal processing thorem, achieves following results : algorithm. we employ svpwm ( space voltage pwm ) algorithm, improve the efficiency of the electric source, and decrease the harmonious elements. we build the mathematic model of the system and simulate it on matlab platform, dsigne segmented pid regulator to adapt variable speed and widen the speed range. measurement. the velocity and electric current measuring, we adopt multi - sampling - rate and digital filter principles. as more improvements we make, the whole system gets a good results. pc control. the complete controlling system can be controlled remotely. so we develop the pc controlling program.

    採用磁場定向脈寬調制演算法，提高了電源利用率，降低了逆變電壓的諧波，改善了電機的運行特性，降低了對電網的污染；在matlab平臺上建立了交流永磁同步伺服電機和電壓空間矢量脈寬調制控制系統的數學模型，在模擬的基礎上，對傳統pid調節器進行了改進，提出轉速調節器和電流調節器採用分段pid結構，根據給定轉速所處的區間，自動選擇相應pid調節器的參數，拓寬了調速范圍，提高了控制精度。
  15. This text shows principle of the way to realize the function of electric current measurement and method of implementation automatically, and provides detailed principle picture and software flow chart of the measurement of electric current

    本文給出了實現電流自動檢測的功能原理和實現方法，並給出了電流檢測的詳細原理圖和軟體流程圖。
  16. This paper introduced principle of magnetism - photo optical - fiber electric current measurement system, and designs a digital magnetism - photo optical - fiber electric current meter. with the development of optical - fiber technology and electronic components reliability, the magnetism - photo electric current detection method will be used more widely

    論述了磁光式光纖電流測試系統的原理，並設計了一種數字式磁光光纖電流計，該裝置所運用的測量方法是電力系統中高壓大電流測量技術的一個新方向，隨著光纖技術和電子器件可靠性的發展，磁光式電流檢測技術可望得到推廣使用。
  17. The test experimentations verify that the grounding measurement system of this paper can fulfill the demand of the small electric current test, and be applied to the engineering measurements

    通過現場測量證明本系統的測量精度到達小電流測試要求，可應用於實際工程測量。
  18. The important study is the electric parameter measurement system which is achieved with sigma - delta a / d converter and dsp " sampling to three phrase voltage and current. its function includes the measurement of current, voltage, frequency, phrase, power, factor, active power and energy, reactive power and energy

    本文主要研究了用? a d轉換器和dsp處理器對工頻三相電壓、電流進行數字采樣，再用數字低通濾波器實現對三相電參數進行測量的測量系統。其主要功能包括對電流、電壓、頻率、相位、功率因數、有功功率、有功電能、無功功率、無功電能等測量，並具有測量數據并行輸出介面。
  19. In this paper, the research actuality status of zno thin film ’ s structural character, preparation methods and electrical - optical properties is summarized. the effect of sputtering parameters, annealing parameters and doped sb2o3 on the structure, optical absorption and electrical properties of zno thin film is studied by sem, xrd, xps, eds, uv - vis spectrophotometer, hall effect detector, four - point probe electric resistance measurement and direct - current impedance measurement etc. the results of sem, xrd and edx show that zno thin film possesses good processing stability

    本文在綜述zno薄膜的結構特性、制備方法和光電性能等現狀的基礎上，採用射頻磁控濺射技術制備了純和sb _ 2o _ 3摻雜的zno薄膜，採用sem 、臺階儀、 xrd 、 xps 、 uv - vis分光光度計分析、電阻儀、阻抗譜儀等儀器設備分別研究了濺射工藝參數、退火工藝參數和sb _ 2o _ 3摻雜對zno薄膜結構特性、光吸收性能和電學特性的影響規律。
  20. The result shows are as following, first, using a. c. impedance measurement to measure the compression sensibility of cfrc can eliminate the polarization effect at the electrode of cfrc specimen and the thermoelectric force of the electrode effectively ; the thermo sensitive effect can be avoided by using little electric current, so the a. c

    結果表明：採用交流阻抗法測試cfrc試塊的壓敏效應可以有效地消除cfrc試塊的電極處的極化效應和電極界面的熱電動勢；採用小電流供電可避免溫敏效應，因此交流阻抗法要比直流電阻法穩定性好。
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