電橋位置 的英文怎麼說
中文拼音 [diànqiáowèizhì]
電橋位置
英文
bridge position-
Single er valve ' s control equation is derived two mathematic models of er valve - cylinder actuator is constructed according to control methods of er valve - cylinder. and a position control system based on er valve - bridge actuator is simulated. the result shows that the system has good dynamic performance
根據電流變閥對液壓缸的控制方式，建立了兩種由電流變閥控制液壓缸組成的電流變閥控系統動力元件的數學模型，並對電流變閥橋路結構式的動力元件組成的閥控位置系統進行了模擬。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。At the aspect of hardware design, it adopts pulse distributor and the technology of single polar voltage drive to accomplish the function of controlling and driving stepmotor ; it adopts the technology of pulse width modulation and cmos h - bridge drive to accomplish the function of controlling and driving dc servomotor ; it adopts d / a convertor to accomplish the function of controlling ac transducer ; it adopts the technology of digital phase detection to accomplish the function of detecting the feedback position signal of induction phase shifter ; it adopts dsp ’ s capture cell to accomplish the function of detecting the feedback position signal of photoelectric coder
硬體方面，採用脈沖分配器和單極性電壓驅動技術實現了步進電機的控制和驅動功能;採用脈寬調制技術和cmos互補h橋驅動技術實現了直流伺服電機的控制和驅動功能;採用d / a轉換器實現了交流變頻器的控制功能;採用數字化相位檢測技術實現了感應移相器位置反饋信號的檢測功能;採用dsp的捕獲單元實現了光電編碼器位置反饋信號的檢測功能。The main work and conclusion for this paper is as following : according to the flashover test results of several kinds of iced insulators under positive voltage and negative voltage, this paper obtained : for the single porcelain insulator, the single glass insulator and the composite insulator bridged completely by icicle, the metal cathode ' s strong ability of emission electron is the primary reason that results in the lower negative flashover voltage ; the position difference of the high resistance district in method anode side results in that porcelain insulator cluster and glass insulator cluster have an evident effect of polarity ; when less ice and no icicle at the brim of the sheds, due to numerous non - polar arcs on the composite surface, the effects of polarity of composite insulator was lost using the test method of the average flashover voltage in the freezing period, dc flashover performances were investigated of several insulators with some typical structures and different material
本文的主要工作和結論如下：在人工氣候室內，根據不同覆冰絕緣子正、負極性下的閃絡試驗結果，得出負極性電弧金屬陰極的強電子發射能力造成了單片瓷、玻璃絕緣子及被冰凌橋接的合成絕緣子有較低負極性冰閃電壓；正極性電弧金屬陽極側產生高電阻區所處位置的差異使得瓷和玻璃絕緣子串具有明顯的極性效應；覆冰較少時，合成絕緣子表面出現數量較多的非極性電弧使合成絕緣子無極性效應。利用覆冰期內平均閃絡電壓的試驗方法，對不同材質和結構的絕緣子在覆冰、低氣壓和污穢共存環境中的直流閃絡特性進行了研究。試驗結果表明，直流平均閃絡電壓隨著海拔的升高、覆冰量的增加以及污穢度的增加而降低，且其特徵指數與絕緣子結構、覆冰量、覆冰狀態、污穢度等有關。Based on comparison of several motor candidates, doubly salient permanent magnet ( dspm ) motor is a good choice for it ’ s outstanding performance. similar to conventional drive system, dspm brushless dc motor ( dspm - bldcm ) is composed of dspm motor and it ’ s controller. the controller is made up of three - phase full - bridge inverter, driver, dsp control unit and etc. for high power system, every switch of three - phase inverter is actually made up of four mosfets in parallel
在充分考慮國內外不同的液壓泵電動機的基礎上，本文選用了雙凸極永磁電機作為整個系統的電機本體，並配以電動機控制器（控制器包括三相橋式功率變換器、驅動電路、 dsp主控單元、電流采樣及預處理和位置采樣及預處理等主要部分）組成整個液壓泵電動機系統。Design the configuration parameter of the electromagnets using magnetic circuit theory, and check the temperature increase of the electromagnet. and design a power device using igbt with electric and electron theory. it can supply the electromagnets excitation current which changes regularly on a given rule
對于彎扭矩檢測系統，運用應變儀的原理，在試件上的合適位置加貼應變片並組成惠斯登全橋差動電路，檢測出實際加載在試件上的彎矩和扭矩的大小。This thesis work has researched the fabrication technics of photonic crystal defect waveguide with air - bridge structure and collecting waveguide ; suggested using uv - lithography and wet etching to fabricate traditional waveguide, after that, using eb - lithography and dry etching to fabricate photonic crystal holes, so can reduce the fabrication cost by a big range ; designed the moulding board, which can fabricate the air - bridge structure and is convenient for recognizing position in eb - lithography ; the structure consisted of traditional waveguides and etching grooves are fabricated on soi successfully, then an successful eb - lithography is realized on the structure, the defect waveguide collected with the traditional waveguide quite well ; used the etching grooves to do the sacrificial layer etching experiment, which grounded etching sacrificial layer by photonic crystal holes in next step
提出採用紫外光刻工藝製作傳統波導結構之後，通過電子束曝光和干法刻蝕製作光子晶體小孔的工藝方案，大幅度減低了製作成本；設計出可形成空氣橋結構、並且適用於電子束曝光位置識別的光刻模板，在soi材料上成功製作出帶有空氣橋刻蝕預留槽以及接續光波導的結構，在該結構上成功實現了光子晶體帶隙波導的電子束曝光，帶隙波導與接續光波導位置接續良好；最後利用預留槽進行了刻蝕犧牲層的實驗，為下一步利用光子晶體小孔刻蝕犧牲層形成空氣橋結構打下了基礎。The basic working principles and characteristics of srm will be described firstly in this paper, as well as its developing survey and researching directions. and then the srd system will be separated into several function parts to be introduced respectively in details : ( 1 ) to analyze the basic characteristics of the srm including electromagnetism, current and torque of every angle field of the rotor based on the subsection - linearized inductance characteristics of stator windings and several idealized supposes. ( 2 ) how to design and realize the h - bridge converter, and the method to use it ; ( 3 ) how to design and realize the controller based on dsp ( tms320f240 ) and the control strategies, as well as the program ; ( 4 ) to introduce the monitor program running in a pc, which is programmed by delphi
本文首先介紹了srm的基本工作原理和特點以及srd系統發展概況和研究方向，然後以srd的功能構成為線索分部分進行介紹： （ 1 ） srm的特性及控制策略分析，在電感分段線性化等簡化條件下分析得出了各個轉子位置角度區間的電磁、電流和轉矩特性並分析了控制策略； （ 2 ）分析設計了h橋式功率變換器的設計和工程實現的方法，並設計了基於這種功率變換器的換相邏輯； （ 3 ）分析設計了以dsp為核心的控制器以及控制方法，並介紹了該控制器的軟硬體實現； （ 4 ）介紹了如何用delphi編制實現上位機監控程序。6. 5 earthquake in the west of beijing in 1730 together with the data of drills, electromagnetism and gravity, the qinglongqiao - qiliqu and shahe active faults are identified for the first time. although at present all aspects of the earthquake are not fully known, the authors consider that the two active faults are responsible for the earthquake and the first one plays the leading role
在前人研究1730年北京西郊6 . 5級地震的基礎上，綜合井孔電磁和重力資料，經分析初步確定了青橋七里渠活動斷層和沙河斷陷南緣活動斷層的存在及其位置規模和基本特徵，認為這兩條活動斷層是此次地震的發震構造，其中青橋七里渠斷層在此次地震中起主導作用。The clamping diodes conduct only once in a switching period, and the resonant inductance current is smaller in zero state, leading to a higher efficiency and reduced duty cycle loss. the operation principle of the improved converter and the comparison with the original converter are analyzed in this paper. the effect of the blocking capacitor in series with the transformer or resonant inductance is discussed, and a best scheme is determined
本文將諧振電感和變壓器交換位置，使變壓器與滯后橋臂相連，這樣箝位二極體在一個開關周期中只導通一次，同時零狀態時諧振電感電流較小，有利於提高變換效率和減小占空比丟失，本文分析改進后變換器的工作原理，並與改進前的變換器進行對比，討論隔直電容在不同位置對變換器工作的影響，確定一種最佳工程方案。Since 1960s, the mechanical strength reliability and structural system reliability, whose main failure modes are fatigue and service life, has achieved a great deal of development and been applied to engineering machine, aeronautical and astronautical engineering, electric apparatus, bridges, ship, civil engineering etc. with the developing of space technology and tendency of machine towards high speed, precision, automation, one realizes the importance of mechanism reliability based on the accuracy of motion, for the errors of mechanism occurred more often than that of structure, especially in the field of aeronautical and astronautical engineering and operate system of weapon
上個世紀60年代以來，以疲勞、壽命為主要失效模式的機械強度可靠性、結構體系可靠性研究得到了很大發展，並迅速應用於工程機械、航空航天、電器設備、橋梁、船舶、土木工程等。隨著空間技術的發展以及機械的高速精密化、自動化發展，人們逐漸認識到以機構動作參數的準確可靠為主要指標的可靠性問題日益突出，因為在很多機械上機構的故障多於結構的故障，尤其是在航空航天及武器操縱系統方面。由於這些機構的運轉特性，振動可靠性的研究亦佔有突出的位置。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。It is situated in no. 57 hot water road, south district, qingtao city, good geography location, west is electric information city, yigao digital square, east is near flourishing zhongshan road business street, only 2 km to famous tourist scenic spot zhan bridge in qingdao
酒店地處青島市市南區熱河路57號，地理位置優越，西臨電子信息城頤高數碼廣場，東臨繁華的中山路商業街，離青島市著名旅遊景點棧橋僅有2公里路程。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。分享友人