電動式電橋 的英文怎麼說
中文拼音 [diàndòngshìdiànqiáo]
電動式電橋
英文
electrodynamic bridge-
Overhead travelling crane - span series and lifting height series
電動橋式起重機跨度和起升高度系列Typically, there are three kinds of different structures of micro - switch : cantilever beam, fixed - fixed beam ( air bridge ) and torsion beam, all of these are actuated by electrostatic force
常見的開關結構有懸臂梁、空氣橋和扭轉擺三種，目前均採用靜電驅動方式。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。There are many lifting equipments with thousands of varieties and specifications, such as l series of electric single beam cranes and manual single beam cranes, q series of electric bridge - style cranes, m series of gate - style cranes, qt series of tower cranes, and h series of electric hoist cranes, which are widely used in the industries of metallurgy, machine, mine, railway, port, oil, chemical industry, construction and so on
集團的主要產品有l系列電動系梁起重機及手動單梁起重機， q系列電動橋式起重機， m系列門式起重機， qt系列塔式起重機， h系列電動葫蘆及其它形式的起重機械共有千個品種規格，廣泛應用於冶金、機械、礦山、鐵路、港口、石油、化工建築等行業。During the circuit design, the author analyzed the basic principle of the direct current motor, pwm control, h - bridge power driver, and two control techniques of h - bridge power drive circuit, designed its general structure, so the feasibility of the design is confirmed. then, reference, oscillator, power dmos gate drive circuit ( charge pump, bootstrap ), and dead time generation circuit are designed and analyzed in the sub - circuits. a current - controlled oscillator is presented in this thesis
在電路設計中，作者介紹了直流電機的工作原理和數學模型、脈寬調制（ pwm ）控制原理、 h橋電路基本原理和h橋功率驅動電路的兩種控制模式，設計了驅動電路的總體結構，給出了電路的功能模塊，確定了設計的可行性，然後在子電路模塊中，重點分析設計了基準源電路、振蕩器電路、高端功率管柵驅動電路（電荷泵及自舉電路） 、低端功率管柵驅動電路和死區時間產生電路。Self - balance display instruments for temperature measurement. guidance for the calculation of bridge resistance, scale and chart
自動平衡式測溫顯示儀表.橋路電阻標度尺和記錄紙的計算導則This paper discusses the monitoring system for power supply and distribution which is in operation at the power distribution project in waigaoqiao harbour district of shanghai, and analyzes this monitor system in terms of its main function, contruction, characteristics and the standard of appraisal
闡述了上海外高橋港區四期變電工程中大用戶綜合信息管理自動化系統的運用，詳細分析了綜合自動化系統的主要功能、結構形式、特點，以及評價標準。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。The result shows that, when the full - bridge power converter is joined with boost / buck dc chopper in parallel, it can serve a dc voltage of over 340v and a power of 800w, meanwhile, as output voltage of the fuel cells changes due to loadings, the sliding - mode controller can cause more rapid responses and robustness to the dc bus voltage source
實驗結果顯示，本論文之全橋式功率轉換器與升壓/降壓直流截波器並聯供電時，輸出電壓可達340v以上，輸出功率約為800w ，同時，當燃料電池之輸出電壓因負載而改變時，本論文所提出之滑動模式控制器能使直流鏈電壓具有較快速的響應及強健性。This type of cable tray is good for cables with larger diameter used for high or low voltage application, is light weight, low cost and easy to assemble yet, it has better heat dissiopation
梯級式玻璃鋼橋架用於直徑較大電纜的鋪設，最適合高、低壓動力電纜的鋪設，重量輕，成本低，安裝方便，散熱和透氣性好是其最大的特點。The operation principle, stability and current ripple of the output filter inductor between serial and parallel modes are analyzed. a 1000 va serial and parallel combined dual buck half - bridge inverter ( dbhbi ) has been implemented to verify the analysis
文章分析了該逆變器的工作原理、串並聯兩種運行模式對輸出濾波電感電流脈動、輸入電壓脈動、系統穩定性的影響，並以1000va雙降壓式半橋逆變器為例進行了實驗驗證。Qd type electromotive double girder crane with bridge style is a general loading and unloading machine designed according to gb / t14405 - 93 standard
Qd型電動雙梁橋式起重機是根據gb / t14405 - 93標準設計的，是一種通用的起重裝卸機械。At present, the main methods used in the study on chinese traditional medicine in gastrointestinal dynamics animal experiment are gastric emptying and small intestine motional rate mensuration, parent electric bridge strain gauge mensuration, gut hormone determination ( gas, mot, ss et ), immunohistochemical method, excised gastrointestinal smooth muscle dynamoscopy, intragastric and intestine pressure tracing
摘要中藥在胃腸動力動物基礎實驗研究，目前主要採用胃排空小腸推進率測定法、胃腸道腔外電橋式應力傳感器記錄法、胃腸激素測定（胃泌素、胃動素、生長抑素等） 、免疫組織化學方法、離體體胃腸平滑肌肌條動力測定、胃腸內壓描記法。The zero - voltage - switching ( zvs ) pwm hybrid full - bridge three - level ( h - fb tl ) converter can operate in both three - level mode and two - level mode, the output rectified voltage is close to the output voltage over the entire input voltage range, thus the output filter can be reduced significantly, leading to high power density and fast dynamic response. so the zvs pwm h - fb tl converter is very attractive for the applications such as fuel cells, photovoltaic cells, and telecom power supplies, where the voltage varies in a wide range
零電壓開關復合式全橋三電平（ zero - voltage - switchingpwmhybridfull - bridgethree - level ， zvspwmh - fbtl ）變換器可以工作在三電平模式和兩電平模式，在很寬的輸入電壓范圍內，輸出整流電壓都接近輸出電壓，從而可以減小輸出濾波器，因此可以提高變換器的功率密度和改善動態性能。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。Shop test code for marine ac electric overhead travelling cranes in engine room
船舶機艙內交流電動橋式起重機的工廠試驗規程For example, the equipment management department of the haven may require such a status detection and security estimation system on their derricks so that detailed states of the engines, retarders and the whole mental structure can be administrated and solve problems in advance to guarantee the normal proceeding of the task.
港口設備管理部門要求在他們的橋式起重機上安裝一套機械設備的狀態監測與安全評估系統，以便隨時可以監視橋式起重機上各個電動機、減速箱和整體金屬結構的工作情況。以便及早發現問題，在影響裝卸作業以前，排除故障，保證作業的正常進行。Tray - type cable support systems are ideal cable laying devices most broadly applied in petrolum industry, chemical industry, power and light industries. television and telecommunication, it is featured by such advantages as small weight, great loading capacity. good - looking shape, simple structure. convenient erection. quick heat dissipation and fine permeability
托盤式橋架是石油、化工、電力、電視電訊等方面最廣泛應用的敷設裝置，它具有重量輕，載荷大、造型美觀、結構簡單、安裝方便、散熱透氣性好等優點，既適用於動力電纜的安裝，也適用於控制電纜的敷設。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。Abstract : the multifunctional inverter power sourcethe handy inverter welding, plating & charging manchine, developed with advanced inverter and micro - electronics control techniques, adopts “ half - bridge power expansion supply midpoint voltage autocontrol setting ”, and technically and effectively having solved inverter subvision of inverter power expansion circuit for leaning magnetism, reliability of high - power inverter setting, achives combination of constantcurrent and constantvoltage export, and realizes low - voltage dc and high - voltage ac double power supply
文摘:運用先進的高頻逆變技術和微電子控制技術設計研製的逆變式多功能電源便攜式逆變焊鍍充電多用機，採用「半橋式功放級供電中點電壓自動控制調節裝置」 ，在技術上解決了逆變功放電路因偏磁而造成的逆變顛覆，有效地解決了大功率逆變器的可靠性問題；進行多種外特性的綜合設定，實現了恆流與恆壓輸出的合一；與傳統焊機相比，實現了開環和閉環狀態下都互不影響的低壓直流電瓶和高壓交流雙供電分享友人