直流電位計 的英文怎麼說

中文拼音 [zhíliúdiànwèijì]
直流電位計 英文
dc potentiometer
  • 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...
  • 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...
  • 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...
  • 直流 : direct current （dc）; constant current; steady current; continuous current; zero frequency curre...
  1. In the positioning servo - system, which generally is configured by the d. c. pulse width modulator ( pwm ) velocity governing system and position servo - loop, the parameter perturbance of pwm velocity loop really exist by reason of such as the load behavior ; power voltage supply ; operating setting value, etc. 1, 2 ， and it cannot be ignored. by using the identification technique to form the mathematical model of the system, authors have confirmed the facts. therefore, to design the discrete sliding mode controller ( dsmc ) of the positioning servo - system, the perturbed parameters value bounds of the pwm velocity loop, which is as the controlled plant of position servo - loop, should be accounted. consequently, the design principle of dsmc for accounting system with parameter perturbance is proposed by the authors. the proposed method can ensure the stability of system with parameter perturbance and the behavior of non - overshoot, fast precise positioning. in order to reveal the effects of the design method, the comparative research work is done by the authors. also, it has been tested in an industrial experiment, the results proved it is satisfactory

    由直流脈寬調速系統（ pwm ）和位置環構成的定位系統中，速度環的參數隨負載特性；電網電壓；給定工況而攝動是不容忽視的.作者通過系統辨識建模也證實了這一事實1 ， 2 .因此在設計位置環的離散滑模控制時，必須針對速度環（即位置環的控制對象）的參數攝動范圍採用「對象參數攝動離散滑模控制器的設計方法」 ，以確保系統在參數攝動時的穩定性和快速、無超調、準確定位的優良動態品質.為剖析該設計方法的控制效果，本文作了對比性研究，並將該設計方法用於工業試驗中，取得了滿意的結果
  2. A novel low mechanical hysteretic ceramic capacitive pressure transducer has been made, by using of ceramic sealing technology ; integrate circuit ( ic ) technology and thick film plane fixing circuit technology. this transducer is made of a deformable ceramic diaphragm and a ceramic base plate, between which has an air cavum. a coaxial gold electrode was fired onto the diaphragm and the base plate

    本文利用新型陶瓷技術、集成電路技術和厚膜平面安裝電路技術，採用零力學滯后的陶瓷和陶瓷密封材料進行設計製造了一種非充液乾式的電容式壓力傳感器，該壓力傳感器由較厚的陶瓷基體和較薄的陶瓷膜片構成，中間形成一空氣介質腔，在基座和膜片之間內置同軸的雙電極，組成兩個電容，當膜片承受壓力時發生位移，使電容量產生變化，經後置處理電路直接轉換為可輸出的直流電壓信號。
  3. 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。
  4. Second, the results of theory analysis and simulation research show that the output of one cycle controlled bridge switching power amplifier have dc offset because of the nonideal characteristic of reset signal. the magnitude of output dc offset voltage is proportional to width of reset pulse. a voltage compensation technique is used to solve this question, and the computation formula of compensation voltage is gived. the circuit compensated and not are researched through simulation and experiment, which results show that compensated circuit solve the output dc offset effectively

    其次，理論分析和模擬研究結果表明，由於復位脈沖的非理想特性，單周控制的全橋開關功率放大器輸出端存在直流偏置問題，其大小與復位脈沖的寬度成正比。針對輸出直流偏置問題，提出了電壓補償的改進方案，給出了補償電壓的具體計算公式。對補償前和補償后的方案進行了對比模擬研究和實驗研究。
  5. 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。
  6. 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。
  7. This temperature calculation method avoids the non - correspondence between the flow rate and heat flux, which may exists in that used by boiler manufactures, and was employed to calculate the tube temperature of dangerous position that concerns with the retrofit scheme of superheater 1 of tower type coal - fired 330 mw once - through boiler in pucheng power plant for 100 % and 50 % operation load

    針對蒲城電廠330mw塔式燃煤直流鍋爐1號過熱器的改造方案，利用本文提出的方法與電廠鍋爐常用的壁溫計算方法分別計算了100 %與50 %鍋爐運行負荷下危險部位的壁溫。
  8. By magnetic field analysis for the stage, three formulas reached : one is magnetic road magnetic force calculational formula of magnetic levitation system that except flux leakage, the second is magnetic driving force calculational formula for open magnetic road dc linear motor, the third is magnetic flux density calculational formula for dc linear motor. these formulas make reference for design, analysis and control

    本文對磁懸浮定位平臺進行了電磁場分析，推導出磁懸浮系統不計漏磁的簡單磁路、磁力計算公式和原理樣機所採用的開磁路直流直線電機推力及磁通密度計算公式，為設計、分析及控制提供參考。
  9. The amplitude discrimination circuit, the filter circuit and the amplifying circuit are designed to transform ac analog signal that the eddy current sensor output to dc analog signal, thus, the dc analog signal can be received by ad converter

    傳感器輸出的測量信號是中頻的交流模擬信號，在下位機系統設計了鑒幅、濾波、放大電路將測量信號轉化為模數轉換器可以接受的直流信號。
  10. The researcher could use the ansys software to design and analyze the motors who did n ' t know the ansys software very well by the special purpose software packets. the influence of a centralization winding brushless dc motor structural design parameter and magnetic field were analyzed, and a way to achieve the fix position angular force was brought out

    利用上述軟體研討無刷直流電機的定位轉矩的求取方法；分析集中式繞組的無刷直流電機各結構設計參數對磁場的影響，嘗試求取、分析空載漏磁系數，討論如何削弱定位轉矩。
  11. Abstract : first, the key magnet statuses and their pertinent mmf. position of exterior rotor brushless dc motor are described in this paper. second, the air - gap magnetic field and the armature reaction of the three - phase six - step exterior rotor brushless dc motor used in electrical bicycle are analyzed by means of mmf. vector, mmf. integration and magnetic field fem respectively. some valuable conclu - sions for designing this kind of motor are obtained

    文摘:給出了外轉子無刷直流電動機的典型磁狀態及其對應的磁勢矢量位置，並用磁勢矢量合成法、磁勢積分法及電磁場的有限元方法對電動自行車用三相六狀態外轉子無刷直流電動機的氣隙磁場及電樞反應進行了詳盡的分析，從而得到有益於該種電機設計的結論。
  12. Presents the conceptual design of standard dc potential dividers and its special features and expounds the principle of equal - potential screening technique and actions taken for its application in standard dc potential dividers

    介紹了研製標準直流分壓箱的設計思想及其特點，闡述了等電位屏蔽技術的原理和應用於標準直流分壓箱中所採用的措施。
  13. Firstly, the current testing localization in the detection of electric bow is analyzed and the new system ' s whole construction developed in this thesis is introduced ; in the 2rd chapter, the embedded 110v dc power supply is analyzed and constructed, and with experiments, some dissonant results such as the fluctuation of output pwm ( pulse width modulation ) pulses, the power noise added to output voltage, and the drop of output voltage have been analyzed and the problems have been broken down one by one ; in chapter 3, stepping motor ' s drive has been systematically dissertated, and combing stepping motor ' s subdivided drive technology, the author develops an intelligent mini - step driving circuit using a main - sub microprocessor structure, which is validated in the hybrid stepper based system ; in the 4th chapter, liquid crystal driving and displaying technology is specified in detail, with one sort of lcd modules ( tlm12864h ), the author develops an feasible circuit for the new testing system, designs a menu mode based program struc ture and brings here some programming codes using franklin c51 programming language ; in chapter 5, the above built system is used in the electric bow ' s practical detection, and the differentiating rate of this system is analyzed

    論文首先分析了目前機車受電弓檢修方式存在的局限並概述了本論文研製的受電弓測試系統的體系架構；第二章對系統內置110v直流控制電源進行了分析和設計，結合試驗對輸出pwm振蕩、輸出電源噪聲大、輸出電壓下跌等現象進行了分析並提出解決措施；第三章論述了步進電機的驅動，結合步進電機微步驅動技術研製了基於上下位單片機組的混合式步進電機智能驅動電路，並在試驗中得以驗證；第四章詳述了液晶驅動及顯示技術，利用一款液晶顯示模塊tlm12864h研製出本系統用液晶顯示電路，設計了菜單式的程序結構並以franklinc51編程方式給出部分子程序代碼；第五章則將以上構建的整個系統應用在機車受電弓的實測中，並對測試解析度進行了分析。
  14. Particularly set forth scm control circuit, principle and realization process of dc electromotor in creeping machine, the design of logic circuit and principle of interface card, the design of precise location installation, the choice of sensor, its principle and realization process, including the concrete process of realization by software

    詳細闡述了爬行器中直流電動機驅動裝置的單片機控制電路設計、工作原理及實現過程；介面卡邏輯電路的設計和工作原理；精確定位裝置的設計、傳感器的選用、工作原理，包括各項工作的具體軟體實現過程。
  15. In this thesis, an h - bridge power drive integrated circuit has been analyzed, designed and taped - out. it is a typical spic, which could be widely used in stepper motor drive, position and velocity servomechanism, industrial automaton, various numerical controlled equipments, printers and plotters control and other applications

    本文分析、設計了一種廣泛應用於直流電機和步進馬達驅動、位置與速度伺服系統、工業機器人、各種數控設備和印表機和繪圖儀等中的spic電路? ?單片h橋功率驅動集成電路，並對此電路進行了流片。
  16. The displacement device has two kind of power supply, dc and ac, which can insure the stability and adaptability in field application. mc1404b counter chip responding for accurate signal replacement was set in the internal circuit. the display component adopts the 7135 led display circuit with common cathode

    測量儀採用交直流兩種形式供電，這樣既方便現場的使用又可以保證電源供電的穩定性，其內部電路中採用mc1404b計數器晶元，能夠準確的進行復位調零功能，顯示部分採用7135共陰極led的顯示電路，這種晶元精度高、解析度高、能準確檢出極性。
  17. The d. c. resistance of each phase is also checked against the calculated resistance value for the stator and for balanced resistance between each phase

    每個相位的直流電阻也經過與定子的設計負載電阻值進行核對，以確認能夠在每個相位之間進行平衡。
  18. Research of position servo system for the brushless dc motor

    無刷直流電動機位置伺服系統的設計
  19. The rotor velocity and position can be taken as two states variable of the system by using the ekf on the basis of the theory of the bldcm. based on the measured stator currents and stator voltages, we can estimate the rotor velocity and position. it is very useful for us to study the application of the velocity and position sensorless operation of brushless dc motor drives

    在直流無刷電機的原理基礎上，利用擴展卡爾曼濾波器將轉子轉速和位置看成系統的兩個狀態變量，根據定子側可測的電流、電壓值，逐步估計出轉子轉速和位置，為無速度和位置傳感器無刷直流電機控制系統打下基礎。
  20. In the design of real - time control system, the paper takes three - phase full - bridge mosfet inverter as the real - time control main circuit, and adopts a control scheme with 120 ? switching mode combined with half - bridge pulse width modulation ( pwm ), which would avoid straightthrough short of a certain bridge. phase current is detected by single current sensor ; three - phase position signals generated by position sensors could not only supply commutation information for inverter, but also be used for speed detecting based on signals " period measurement, which makes the speed sensor unnecessary. the whole control system adopts speed and current dual closed - loop control strategy in order to construct a high performance rare - earth permanent magnetic brushless dc motor ( repm bldcm ) full - digital real - time control system

    在實時控制系統的設計中，本文以三相全橋mosfet逆變電路作為實時控制主電路，採用120導通方式結合半橋pwm調制的控制方案，從而有效地避免了橋臂的直通短路；本文用單電流傳感器實現對相電流的檢測，來自位置傳感器的三相位置信號不僅為逆變電路提供換相信息，而且也用於基於信號周期測量的轉速檢測，這樣就省去了速度傳感器；系統採用的是速度、電流雙閉環控制策略，力求構建高性能的稀土永磁無刷直流電動機全數字實時控制系統。
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