線性磁化率 的英文怎麼說

中文拼音 [xiànxìnghuà]
線性磁化率 英文
linear suscepibility
  • : 名詞1 (用絲、棉、金屬等製成的細長的東西) thread; string; wire 2 [數學] (一個點任意移動所構成的...
  • : Ⅰ名詞1 (性格) nature; character; disposition 2 (性能; 性質) property; quality 3 (性別) sex ...
  • : 名詞1. [物理學] (磁性; 能吸引鐵、鎳等的性質) magnetism 2. (瓷) porcelain; china
  • : 率名詞(比值) rate; ratio; proportion
  • 線性 : [數學] [物理學] linear; linearity線性代數 linear algebra; 線性方程 linear equation; 線性規劃 line...
  1. The stability of electric power system has been being focused for a long time toprevent a power system from losing synchronism after sudden fault , researchers have done much work and got many accomplishments this paper applied the direct feedback linearization ( dfl ) technique on the power system , a strong nonlinear system simulation results by matlab proved this method efficiency main works and results are as follows : this paper compared some existing methods in excitation control , fast valve control and coordinated control respectively, analyzed the developments and actuality of nonlinear control research in brief, illustrated why ransient stability could be greatly improved by using the fast valve control in chapter 3 , indicated the importance of coordinated control farther this paper introduced the inverse system theory, based on which , discussed the dfl theory, pointed out which had consistency with the inverse theory, expanded the dfl theory combined the idiographic model equations , made which adapt to the model of a single machine - infinite bus power system this paper referenced abundance articles and educed a set of equations , which could describe the dynamical process of excitation and fast valve control for synchronous generators in the equations , there were several very important parameters of power system - - rotor angle ( ) , rotor speed ( ) , generator q axis voltage ( eq ) , transient voltage ( e ' q ) , active power ( pe ) , mechanical input power ( pm ) , valve opening ( ) , generator terminal voltage ( vt ) , based on the model , nonlinear coordinated controller and terminal voltage optimal controller have been designed by using the expanded dfl theory and lq optimal control theory the simulation results showed that the controller could keep power system transiently stable under the effects of a symmetrical 3 - phase short circuit fault , which achieved better postfault regulation compared with another two routine methods , one is the proportion excitation controller and proportion fast valve controller, the other is the proportion excitation controller and the optimal fast valve controller, which could exert good performance when met 1ittle disturbance either

    在介紹逆系統理論的基礎上,詳細介紹了dfl理論,通過比較闡明了dfl理論其本質是逆系統方法的一類,並結合具體課題推導出的模型方程將dfl理論進行了擴展,使之適應于電力系統這個強非對象。通過參考大量的書籍文獻推導出一套實用的可將大型汽輪發電機勵與汽門綜合起來進行控制的模型方程,此模型方程涵蓋了電力系統中特別引人注目的幾個量- -轉子角、轉子轉速、發電機q軸電勢eq 、暫態電勢e ' q 、有功功pe 、機械功pm 、汽門開度、機端電壓vt ,在此基礎上建立了實用的電力系統簡的數學模型,並將擴展的dfl理論應用於此模型系統,結合二次型最優控制理論設計出大型汽輪發電機的非綜合控制器及機端電壓最優控制器,通過模擬實驗與採用常規的按電壓偏差進行調節的比例式勵控制器+汽門比例控制及採用常規的按電壓偏差進行調節的比例式勵調節器和基於二次型能指標設計的最優快控汽門(考慮發電機的飽和因素)進行了對比,證實了採用此種控制器可以有效地提高電力系統的暫態穩定,並且在電力系統遭受小干擾時同樣具有良好的調節能。
  2. Based on many references form civil and abroad, the author mainly studies the measurment theory and method for flux, raising height, axial power and rotational velocity. avoiding many complicated and intermediate courses for power wastage analysis, introduces the electric measurement and using efficiency curve of motor in measureing axial power, and satisfies the automatization of the device. the paper also provides a new method, inductive winding, in measuring rotational velocity of electromotor, supplys limitations of other method in measuring rotational velocity of electromotor in water, and meet practical needs in developing diving electric pump for corporation

    作者在參閱大量國內外有關文獻,著重探討了水泵流量、揚程、軸功、轉速的測試原理和測試方法,提出了採用電測法並結合電機效測量水泵軸功,從而避免了損耗分析法中大量復雜的中間過程,滿足了試驗裝置的自動測量要求;採用漏感應圈法測量電機轉速,彌補了其它轉速測量方法對水下電機測試的局限,適應了萊恩公司開發潛水電泵的實際需要。
  3. By successful solution of non - linear magnetic fields and revision of the program, we can reach following conclusions : in the computation of nonlinear magnetic fields, if iteration method is used, under - relaxation is necessary when amending the permeability distribution in soft magnetic materials ; and when < wp = 5 > calculating the equivalent current density in permanent magnets, under - relaxation is not a necessity ; when searching for permeability values by interpolation method on the demagnetization curve of soft magnetic materials, if a fixed saturation point is set, around this point an abrupt change of permeability values will be obtained ; this sudden change may cause a little problem in the smoothness of magnetic field distribution ; because the magnetic circuits of microwave tubes are too complicated, in the author ' s view, to describe the working state of a magnet system, the working points of magnets can not do it properly but average energy production of magnets will serve ; as to indicate the quality of a magnet system design for microwave tubes, the efficiency of magnetic energy utilization will be a very good criterion

    由此得出結論,在非場計算中:採用迭代法的情況下,在各迭代循環之間進行修正時,一個欠鬆弛迭代過程是必需的;對永體中的等效電流修正時可以不作欠鬆弛迭代;在純鐵的上指定某一個固定的感應強度為飽和值,會使得插值求出的在該飽和值附近有一突變,這一突變對計算結果中場分佈變的光滑稍有影響。在微波管系統設計中,由於微波管路比較復雜,作者認為體的工作點並不能很好地反映體的工作狀態,而採用平均能積為衡量體工作狀態的標準更加符合微波管系統的實際情況;要表示系統設計好壞的程度,則用能利用的效為標準更好。
  4. The spot responder system which is the necessary part of ctcs is analyzed in the dissertation and three key technologies of the channel in the responder system are researched. firstly, a new kind of rectangular plate magnetic inductive loop antenna is designed to transmit the power frequency. researching the near field inter - inductive characters, the relationship among the inductive efficiency, the perimeter and the conductor width of the antenna is found out

    本文在對ctcs中的點式應答器系統原理及組成進行分析和消的基礎上,對系統中通道的幾個關鍵技術進行了詳盡的研究,主要分為三個方面: 1 ,提出並研製了新型的片式環形感應天,並對傳輸能量載波的天的近場互感特進行了分析,得到互感效隨天的周長大小以及導帶寬度的變規律,並通過計算機模擬和試驗對天的近場波瓣圖進行了研究;通過分析寬帶匹配技術中的實頻法理論,設計了信號載波天的寬帶匹配網路。
  5. 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的功能構成為索分部分進行介紹: ( 1 ) srm的特及控制策略分析,在電感分段等簡條件下分析得出了各個轉子位置角度區間的電、電流和轉矩特並分析了控制策略; ( 2 )分析設計了h橋式功變換器的設計和工程實現的方法,並設計了基於這種功變換器的換相邏輯; ( 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. ( 3 ) the saturation shear stresses vary as the relative permeability of the matrix fluids, the volume fraction of particles, and the square of the particles " saturation magnetization

    流變液的飽和剪切屈服應力隨基液固體粒子濃度呈正比關系,隨固體粒子的飽和強度呈平方正比關系。
  7. ( 2 ) the shear stresses vary as the relative permeability of the matrix fluids, the volume fraction of particles, and the square of the particles " magnetization. the shear stresses increase with the external magnetic field, but have saturation values

    流變液的剪切應力隨基液固體粒子濃度呈正比關系,隨固體粒子的強度呈平方正比關系,隨著外加場的增大而迅速增大。
  8. The results of calculation prove : the new structured coaxial probe is superior to the traditional coaxial probe in both sensitivity and penetrating depth when used to measure the dielectric properties of chemical reactants or layered biological tissues, and the relationship between the measurement sensitivity of this new structured probe and the frequency of electromagnetic wave are obtained, which provides the optimal frequency for the actual application

    計算結果表明:在學反應溶液及生物分層組織介電特參數的測量中,這種新型的同軸探頭在測量靈敏度及透入深度兩方面都優于傳統的平口同軸探頭。通過計算模擬還得出了這種新型同軸探頭的測量靈敏度與電波頻的關系,為進一步研究其最佳測試頻提供了有價值的參考依據。
  9. 3. there is much correspondence between the curve of the susceptibility and the strata. based on the analysis of the susceptibility, it can be concluded that the area has undergone many climatic fluctuations from dry - cold to warm - wet

    與地層具有很好的對應,並通過分析認為該地區經過了乾冷-暖濕的多次氣候波動。
  10. O curve of dsdp607 v30 - 97 show that loess began to deposit on the terrace of the yellow river about 1. 20 ma b p, and passed thirteen climatic changes from drier and cooler to warmer and wetter later. the turn of sedimentation from alluvium to loess, an event of transformation from accumulation to down - cut of the yellow river, indicates a sharp tectonic uplift occurred around 1. 2 ma b p. key words : loess - paleosol ; susceptibility ; climatic changes ; tectonic movement ; yellow river ; yangfan section

    通過對楊范剖面黃土地層巖特徵沉積結構質量和頻的分析及與深海氧同位素曲的對比,劃分了剖面地層,初步確定了黃土沉積始於1 . 20 ma b p ,黃土沉積以來該區發生了13次大的乾冷暖濕氣候變沉積轉型指示河流強烈加積轉變為河流侵蝕,代表約在1 . 20 ma b p發生過一次強烈的構造抬升事件。
  11. Model dk7720a is a special electric discharge wire cut machine, which is mainly used for machining magnetic material as well as mading exactitude mould and parts of other metal material. features electro - mechanical integration, and hegh machining efficiency

    Dk7720型專用電火花切割機主要用於加工材料,也可用於加工精密模具及其它金屬材料零件,具有機電一體,加工效高行裝特點。
  12. This paper researches and analyses the developments of network measurement systems and magnetostrictive transducers from world wide region. analyzing the characteristics curve of magnetostrictive transducers based on its equivalent circuit, researching the method how to make sure its syntony frequency and its electric simulation network parameters. realizing the magnetostrictive transducers network in labview virtual instrument development environment based on ethernet

    根據致伸縮換能器的等效電路,分析了其輸入阻抗的特,研究了通過致伸縮換能器的輸入阻抗確定致伸縮換能器的諧振頻致伸縮換能器的電氣模擬網路參數的方法;同時在所研究的基於以太網的labview虛擬儀器平臺中首次實現了致伸縮換能器電氣模擬的網路
  13. Taking the hvdc systems as a variable admittance connected at the inverter or rectifier ac bus, the analytical description of the relationship between the variable admittance and active power flows of each generator can be derived. the traditional generator dynamic equations can thus be expressed with the variable admittance of hvdc systems as an additional state variable and changed to an affine form, which is suitable for the global linearization method being used to determine its control variables

    該方法基於微分幾何理論,將直流輸電系統等效為兩個分別連接在整流側和逆變側的變導納支路;在推導出直流輸電系統的等效變導納與各發電機輸出電間的解析關系后,傳統的發電機動態方程可被表示成仿射非的形式,因而可應用全局方法來求得直流輸電系統的調制量。
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