演變磁結構 的英文怎麼說

中文拼音 [yǎnbiàncíjiēgòu]
演變磁結構 英文
evolving magnetic feature
  • 演 : 動詞1 （演變; 演化） develop; evolve 2 （發揮） deduce; elaborate 3 （依照程式練習或計算） drill;...
  • 磁 : 名詞1. [物理學] （磁性; 能吸引鐵、鎳等的性質） magnetism 2. （瓷） porcelain; china
  • 結 : 結動詞（長出果實或種子） bear （fruit）; form （seed）
  • 構 : Ⅰ動詞1 （構造; 組合） construct; form; compose 2 （結成） fabricate; make up 3 （建造; 架屋） bui...
  • 演變 : develop; evolve; evolution
  • 結構 : 1 （各組成部分的搭配形式） structure; composition; construction; formation; constitution; fabric;...
  1. Moke and fmr studies were performed on single crystalline fe ultathin films epitaxially grown on iii - v semiconductor gaas substrate with thickness 4. 1 - 33 monolayer ( ml ). a theoretical mode for fitting fmr experimental data was established. the results demonstrated the structures and reproduced the evolution of the magnetic properties of ultrathin films with various thickness from the state of superparamagnetic nano - cluster through coexistence of two magnetic phases to continuous film, especially the change of magnetic crystalline anisotropy from unixial to cubic

    1 - 33原子層厚度（ monolayer ，簡稱ml ）的fe單晶超薄膜進行了鐵磁共振（ fmr ）和磁光研究，建立了理論模型對鐵磁共振實驗結果進行了模擬，重現了不同厚度的超薄膜，從納米團簇到兩相共存的過度階段直至連續薄膜結構與磁性的變化，特別是磁各向異性從單軸各向異性向立方各向異性轉變的演化過程。
  2. Was launched in 1998 by the united states. it aims at studying the evolution of magnetic field structures of the sun

    於一九九八年由美國發射，它的任務是研究太陽磁場結構的演變。
  3. In the dissertation, a novel hybrid excitation constant voltage synchronous generator is adopted to improve the system performance, which takes the advantages of both electrical excitation and permanent magnet machines. a parted configuration is presented in order to design the structure of the generator. the adaptive digital adjustment is settled in principle using the single chip microcomputer 80c31 as the control core of the voltage regulator and adopting the proportion - integral - differential control as the control arithmetic, then a sample is made

    論文對同步發電機的工作原理、性能特點、電機本體以及電壓調節器的硬體和軟體設計進行了研究，針對稀土永磁同步發電機變載、變轉速情況下輸出電壓不可調的不足之處，採用一種新穎的電機型式? ?自適應復合勵磁恆壓同步發電機，綜合了永磁發電機和電勵磁發電機的優點，提出一種磁路分開的結構進行電機本體的設計，並選用單片機80c31作為電壓調節器的控制核心，比例?積分?微分控制（ pid ）作為其控制演算法，從原理上較好地解決了其電壓的自動數字調節，並試制了一臺樣機。
  4. After the mathematical model of asynchronous electromotor is build, the method of space voltage vector is taken to discuss the essential principle and structure, and arithmetic of direct torque control, and the application of circular magnetic chain self - operated control and the technology of sensor without velocity in direct torque frequency conversion timing are emphasized

    在建立異步電動機的數學模型之後，採用空間電壓矢量分析方法討論了直接轉矩控制的基本原理結構及其演算法，著重研究了圓形磁鏈自控制和無速度傳感器技術在直接轉矩變頻調速中的應用。
  5. The finite element method ( fem ) has become an important means in modern engineering designs, which is used in many fields, such as structural stress analysis, deformational stiffness analysis, mechanic failure analysis, dynamic process analysis, heat analysis, electromagnetism filed analysis and so on

    有限元素法已成為工程設計中不可或缺的重要技術手段，在大型結構作用力分析、變形分析、失效分析、動力學分析、傳熱分析、電磁場分析、流體流動分析等方面扮演著越來越重要的角色。
  6. This paper studies on used the ac servo system based on ti dsp ( lf2407a ) and the foc and digital signal processing thorem, achieves following results : algorithm. we employ svpwm ( space voltage pwm ) algorithm, improve the efficiency of the electric source, and decrease the harmonious elements. we build the mathematic model of the system and simulate it on matlab platform, dsigne segmented pid regulator to adapt variable speed and widen the speed range. measurement. the velocity and electric current measuring, we adopt multi - sampling - rate and digital filter principles. as more improvements we make, the whole system gets a good results. pc control. the complete controlling system can be controlled remotely. so we develop the pc controlling program.

    採用磁場定向脈寬調制演算法，提高了電源利用率，降低了逆變電壓的諧波，改善了電機的運行特性，降低了對電網的污染；在matlab平臺上建立了交流永磁同步伺服電機和電壓空間矢量脈寬調制控制系統的數學模型，在模擬的基礎上，對傳統pid調節器進行了改進，提出轉速調節器和電流調節器採用分段pid結構，根據給定轉速所處的區間，自動選擇相應pid調節器的參數，拓寬了調速范圍，提高了控制精度。
  7. Then according to the mrf machine ’ s structure and motion mode, the function and assignment of mrf machine cnc system are analyzed. the design and implementation of cnc system are researched, and a set of pc - based open architecture cnc system is developed. a trace interpolated algorithm of mrf machine cnc system is advanced according to the characteristic of mrf. the symmetry axis curve surface, such as aspheric surface, which is fit for optics general equation can be machined with mrf machine by using this interpolated algorithm

    然後根據磁流變拋光機床的結構和運動方式，從工程實際應用出發，分析了磁流變拋光機床數控系統的功能和任務，研製了一套基於pc的具有開放式體系結構的數控系統，同時針對磁流變拋光的特點，提出了磁流變拋光數控系統的軌跡控制插補演算法，運用該演算法可對非球面等適用於光學通用方程表示的回轉對稱曲面進行磁流變拋光加工。
  8. Two conclusions about suspending control system are given in this paper : 1. the single suspending system controlled by parameter self - turning control algorithm has better performance when the mass of single point suspending system, the resistance of electromagnet and the suspending gap are variable ; 2. the single suspending system controlled by global asymptotic stability control algorithm is global asymptotic stability and can restrain the stochastic noise

    通過對採用上述控制演算法的懸浮系統的理論分析和模擬研究，主要得到了以下幾方面結論: 1 .當系統懸浮質量、電磁鐵電阻和額定間隙參數變化時，設計的參數自校正控制演算法可使系統的動態性能指標保持在設定的指標; 2 .設計的全局穩定控制演算法，能夠保證二級結構單點懸浮系統的全局漸近穩定，且對隨機噪聲干擾有一定的抑制作用。
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