環流控制 的英文怎麼說

中文拼音 [huánliúkòngzhì]
環流控制 英文
circulation control
  • 環 : Ⅰ名詞1 （環子） ring; hoop 2 （環節） link 3 （姓氏） a surname Ⅱ動詞（圍繞） surround; encircle;...
  • 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...
  • 控 : 動詞1 （告發;控告） accuse; charge 2 （控制） control; dominate 3 （使容器口兒朝下 讓裏面的液體慢...
  • 制 : Ⅰ動詞1 （製造） make; manufacture 2 （擬訂; 規定） draw up; establish 3 （用強力約束; 限定; 管束...
  • 環流 : [氣象學] circulation; circulating current; circumferential motion; circular current; ring current...
  • 控制 : control; dominate; regulate; govern; manage; check; cybernate; manipulate; encraty; rule; rein; c...
  1. Secondly, the paper brings out problems which are need to be solved as emphases by analyzing objectively the plant ' s cost control actuality, the existing problems and its reasons. the analysis indicates that because of high dependence on planned economy, exterior factors seriously restricting the reasonable price of fuel, the electrovalence being made by exterior, the deficiency of its interior mechanism and the big random of cost control, the enthusiasm that the plant manages and controls cost independently is badly hurt. thirdly, aiming at these leading problems, applying the present cost control theory and the main cost control methods of electricity enterprises both home and abroad, the paper designs and evaluates its cost control project at these aspects of productive technology, management, logistic control, financial management and the manpower cost, and lodges corresponding cost control project of every tache

    論文首先對當今國內外成本控制理論研究現狀和應用現狀進行了分析，包括成本性態分析、成本控制內容分析及成本控製程序與方法的分析，為論文研究打好了理論基礎；其次客觀全面地分析了永昌電廠成本控制的現狀和存在問題及其產生原因，其中包括計劃經濟色彩濃厚、外部因素嚴重製約燃料成本的合理配比、電價確定權在外，它嚴重挫傷企業成本管理與控制的自主積極性，也包括企業內部機制不全、成本控制的隨意性大等問題，這為本論文提出了需要重點解決的問題；然後針對永昌電廠在成本控制方面存在的主要問題，應用當今國內外成本控制的主要理論和發電企業成本控制主要方法，從生產技術、生產管理、物流控制、資金管理及人工成本等方面對永昌電廠成本控制方案進行了相對全面的設計和評價，提出相關環節的成本控制方案。
  2. Thirdly, the closed - loop design of the peak - current control applied to the im - fac converter is discussed

    論文還討論了採用峰值電流控制的im - fac變換器的閉環參數設計。
  3. 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
  4. This paper presents our research in actuating in - vivo micro - robot based on the capsule endoscope platform by the external power. while seeking secure driving method we take several factors into account, such as driving environment, power transmitting and consuming, motion requirement and controllability, and locating technique. we mainly deal with driving the capsule with spatial gradient magnetic field, so we employ combined electro - magnetic coils, including gradient coils and homogenous coils, which have rotational dof around a translatable patient bed, to compose a controllable uniform gradient which act on the permanent - magnet embedded robot, thereby get an appropriate spatial force and torque to fulfill the anticipant locomotion such as move, stop, pitch and yaw

    基於驅動環境、能量供給和消耗、驅動動作要求及驅動安全性與可控性，定位方案等多方面考慮，尋求安全可靠的腸胃檢查微機器人的外部驅動控制方法，並著重研究直接利用外磁場磁力驅動微機器人:在微機器人內部嵌入永磁性體，利用體外的組合電磁線圈產生加載電流控制的驅動磁場，其中外部的電磁線圈由多組梯度線圈和勻場線圈組合構成，通過繞病床的旋轉以及病床的平移共同控制微機器人所在位置的磁場強度及梯度，作用於微機器人內嵌磁體以獲得空間意義上的必要驅動力和調整轉矩，從而有效地完成驅動動作要求。
  5. Is the mould level and flow control in a closed loop system and are abrupt changes alerted, monitored and affected blooms controlled / downgraded

    鑄模液面高度和（鋼水）流控制是否在封閉的循環系統中進行？對突發情況是否有報警，監控措施？並且對受影響的鋼坯得到控制和降級使用？
  6. Two nonlinear simulation methods are designed by curve fitting method and anfis which seem simply and right in the simulation experiment. based on the model different control strategies also were realized in detail such as chopped current control ( ccc ), angular position control ( apc ), amplitude - change ccc and pi control. a simple torque sharing function ( tsf ) method and a tsf controller were designed which decreases torque ripple effectively

    文章中還建立一種基於模糊神經網路的非線性模型，並對比分析了三種方法，模擬中確定了電機的最優開通關斷角，在此基礎上實現了電流斬波控制、角度位置控制、變幅值電流斬波控制以及分段雙閉環pi控制，模擬結果表明，它實現了電機的正常運行，很好的抑止了電機轉矩脈動，同時有效地降低了噪聲。
  7. Designed the dual - loop control circuit based on optimized psm, which realize to select the suitable duty ratio to make output stable by utilizing voltage and current feedback loops

    3 ）設計基於優化psm調制模式的雙環控制電路。採用電壓、電流雙環路控制，根據負載情況選擇合適占空比來實現穩壓。
  8. Under the control of a current loop, the system can make advantage of the motor ' s ability of over - current with a maximum limit, as a result, the motor can implement constant - current staring under a maximum let - through current. therefore, the motor ' s rotational speed can rise at a maximum acceleration and reach the given speed within the shortest time

    在電流環的控制下，系統在起動的時候能夠最大限度的發揮電機的過流能力，使電機以最大允許的起動電流恆流起動，則電機轉速可以以最大的加速度上升，並且以最快的時間達到給定轉速。
  9. Beginning from 1999, the chinese government initiated a massive conservation set - aside program called " grain for green program " to reduce soil erosion and improve eco - environmental status in western china through the retirement of sloped agricultural lands and conversion to forest arid pasture

    摘要1999年我國政府啟動了「退耕還林」這一世界最大的生態保護工程，旨在改善生態環境，控制水土流失，調整農業產業結構，促進農村經濟的持續發展。
  10. Thirdly, the paper detailedly explained the whole system ’ s hardware structure based on dsp, and made the flow chart of the software which realized the pwm occur, the current control loop and the voltage loop

    然後給出了基於dsp的全數字式6kw三相應急電源的硬體實現方法，結合設計出來的硬體，編制了基本的dsp底層程序流程。在程序中實現模擬量采樣， pwm產生，電壓控制環和電流控制環等功能。
  11. Looping and controlling procedure flow

    循環和控制過程流。
  12. The second chapter discussed define, characteristic and virtue of field bus, analyzed constitution of field bus control system and difference with traditional dcs. the conclusion is that can is the field bus that adapts to greenhouse climate control after several popular field bus is analyzed, the characteristic and technical specification of can bus is discussed

    第二章闡述了現場總線技術的定義、特點和優點，分析了現場總線控制系統的構成形式，以及跟傳統dcs的區別，通過分析比較幾種主流的現場總線，得出can總線是適合於溫室環境控制的現場總線。
  13. There are many control strategies for three phase four leg inverter, such as spwm, hysteresis current control and space vector modulation

    三相四橋臂的控制策略主要有spwm控制，滯環電流控制，空間矢量控制等。
  14. These improved hysteresis control schemes can ameliorate dynamic performance and decrease the tracking error of load currents

    這兩種改進的滯環電流控制方法，均能改善系統的動態響應性能，減小電流的跟蹤誤差。
  15. Thirdly, current ripple will be calculated in two current control mode respectively and paper will make a conclusion about its interaction with the voltage, current, frequence and so on. finally this paper will show the design of the controller and test waveforms

    另外，本文分析了在兩種電流控制方式下，即pwm控制和滯環控制下電流脈動和相繞組電壓、相電流、轉速和開關頻率的關系。
  16. In order to avoid the current ripple and the high switch frequency of fixed - band hysteresis current controllers, two hysteresis controllers of change hystersis - band are proposed. one is the sinusoidal - band hysteresis current controller, the other is the adaptive hysteresis current controller based on fuzzy theory

    由於常規的滯環電流控制器不能有效地防止負載電流脈動，並且存在著容易導致逆變器的開關器件的開關頻率過高的問題，論文提出了兩種變環寬滯環電流控制器結構，其一是正弦環寬滯環電流控制器，其二是模糊變環寬滯環電流控制器。
  17. In this thesis, based on a digital signal processor tms320f240, a controller for pmsm is researched an designed. we analyzes the mathematics model of pmsm, researchs vector control of pmsm and space vector pwm, discusses the controller of position, speed and current, designs the mrfas position controller, pid speed controller and pid current controller, sets up pmsm ac servo control system, designs dsp controller, and develop the corresponding sofeware. at last, the designed controller is simulated under matlab / simulink, and the results are gived

    分析了水磁同步電機的數學模型，研究了永磁同步電機的矢量控制方法和空間矢量脈寬調制原理，討論了位置環、速度環和電流環的控制方法，設計了模型參考模糊自適應位置控制器、 pi速度器和pi電流控制器，組建了永磁同步電機交流伺服控制系統，設計dsp控制器，並開發了相應的軟體。最後在matlab simulink環境下對系統進行了動態模擬，並給出了模擬結果。
  18. To accept the current signal from high negative voltage circuit, the analog ground is raised to a certain positive voltage, which makes it possible for the signal amplitude to be compressed at the same time of its polarity reversion. a pi control program special for laser gyro current control is brought forward according to the conventional pid control method, in which the control signal is figured out corresponding to the difference between the sample and the reference value by turn of proportion - short step integral - long step integral. and at the end of this paper, a comparison of system performance on different conditions is made and the key elements influencing system performance are educed

    利用集成a / d 、 d / a轉換器的新型晶元aduc824 ，實現了電流（電壓）采樣?數據處理?電流控制的閉環控制結構；地電位的抬升解決了a / d轉換器對負高壓迴路電流采樣時的輸入范圍匹配問題；控制信號反相的同時進行幅度壓縮，使得輸出調整電壓的解析度提高；根據常規的比例?積分?微分（ pid ）調節模型，針對陀螺系統的特性，給出了一種可以滿足系統要求、據采樣值偏差大小進行的比例?大步長積分?小步長積分、分層次比例?積分演算法；不同條件下系統穩流性能的對比、分析在論文最後給出，並據此找出了決定該系統穩流精度的關鍵因素，提出了系統的改進意見。
  19. With the strong dsp as the control unit, the design of main circuit structure is provided, and the control policy for the main circuit loop, the tuning of the triggering angle for thyristor are given

    在具體的系統實現中，變換器主迴路選擇環流控制方式，採用高性能dsp作為模糊控制核心，通過加權平均判決的模糊決策演算法對變換器主迴路晶閘管的觸發角進行調制，從而有效控制輸出電壓波形。
  20. About the transducer between rotor and power source, the paper uses a cycloconverters, comprising 36 thyristors, and analyzes the control of circumfluence, the method of cosine crossing, the producing of trigger pulse, zero current detecting, commutating logic control and its mathematical model

    對雙饋電機轉子側所接變頻器類型，本文也進行了對比分析，對選用的循環變流器的原理還作了進一步的分析，包括環流控制方法、餘弦交截法原理、觸發脈沖產生、零電流檢測和換向邏輯控制等部分，並給出了其數學模型。
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