擬逆元 的英文怎麼說

中文拼音 [nǐnìyuán]
擬逆元 英文
quasi inverse element
  • 擬 : 動詞1. （設計; 起草） draw up; draft 2. （打算; 想要） intend; plan 3. （模仿） imitate
  • 逆 : Ⅰ形容詞1 （方向相反） contrary; counter 2 [數學] inverse; converse Ⅱ動詞1 （抵觸; 不順從） go aga...
  1. Therefore, how to ensure the simulation precision and accuracy is crucial to engineering applications. further improve the automated theory, and continually enhance the accuracy of simulated body structure is the focus of research on anti - collision simulation

    基於一步成形逆有限元方法可以對車身結構件的成形厚度和塑性應變進行預示，改進這一方法，並應用於車身結構件碰撞計算模擬中。
  2. When adopting fea to model, dfc could not only apply into incremental approach with a fully coupled elastic and plastic damage model, but to one step inverse approach

    利用有限元方法模擬時，韌性斷裂準則既可以應用到完全耦合的彈塑性損傷模型的增量方法中，也可以應用到一步有限元逆演算法中。
  3. First in this paper, the characteristics and control methods of bldcm is discussed. on the basis of the run state and control method of the bldcm, combining the electric power and electronic technology, micro electric technology, special integrated chips and the theory of motor control theory, setting up the model of electric power inverter system by using the simulating software - matlab, the control schemes are given when the motor is working in the state of electromotion and electrical regeneration

    首先本文介紹了永磁無刷直流電動機的特點及其控制方法，結合電力電子技術、微電子技術、專用集成晶元、電動機以及控制等理論，在重點研究了電動汽車用永磁無刷直流電動機的運行狀態和控制方式的基礎上，利用matlab模擬軟體建立了電力電子逆變系統的模擬模型，給出了電機處于電動狀態和能量回饋狀態時的控制策略。
  4. Object - oriented finite element analysis in construction by the top - down method

    逆作法施工的面向對象有限元數值模擬分析
  5. In this thesis cannon error of system is discussed carefully, and the error is separated and set up model. on the basis of these and dummy extending of duality multinomial fit, the dummy close ring which can revise the shooting error is set up. the dummy close ring is realized by the adversity means which can find the shooting error

    本文仔細分析、討論了火炮系統的誤差，作者對誤差進行了分離和建模，為虛擬閉環校射功能的實現提供了條件，在此和射表虛擬延伸的基礎上利用逆解法求取了射擊諸元誤差作者建立了虛擬閉環校射理論。
  6. The following conclusions have been drawn from this research program, : ( 1 ) the model following architecture allows for straightforward implementation of requirements of handling quality standard, and it can be utilized for helicopter handling quality design. ( 2 ) the adaptive model - inverse control theory can provide the referenced helicopter with consistent handling quality throughout its operating envelope, with requiring only an approximate linear model at a single operating point. ( 3 ) the technology of adaptive neural network model - inverse control can reduce costs and period associated with pcs development

    通過該課題的研究，得到以下結論： （ 1 ）參考模型跟蹤結構能夠直接實現飛行品質規范要求，可以用於直升機飛行品質設計； （ 2 ）自適應模型逆控制方法只需一個基準狀態下的近似線性模型，卻可在整個使用包線內提供協調一致的飛行品質； （ 3 ）自適應神經網路模型逆控制技術可節約成本，縮短飛控系統研製周期； （ 4 ）在某些部件部分意外失效或戰損情況下，自適應神經網路具有實現控制的在線快速重新配置、保持飛行品質的潛力； （ 5 ）軌跡跟蹤控制器可以用於任務科目基元模擬及飛行品質評估。
  7. Secondly, the temperature distribution in rib - tube heat exchanger in the course of heat transfer is programed and simulated using apdl language of fem software ansys, and the average convection coefficient of both sides is obtained. the rib - tubes with different structure are also simulated and optimized on the base of the calculated results, the relationship between structure and the average convection coefficient of both sides is summrized. the rib - tube structure is optimized using apdl. finally, combines numerical simulation with experimental research, and results of numerical simulation are found to be close to the experimental data

    利用ansys有限元程序對翅片管換熱器的換熱過程進行數值模擬，確定了換熱過程中翅片管的溫度場和熱流量梯度分佈狀況，對翅片管換熱器的多組分流場進行計算，給出了逆流和順流兩種情形下翅片管結構參數對換熱效果的影響規律，並利用ansys提供的優化技術編寫程序對翅片管進行結構優化設計，為其今後在工業中的設計及使用提供了重要依據。
  8. In order to provide a basic and effective practical engineering tool for handling quality planning, analysing and evaluating, which is needed hi helicopter prototype development, this research work is launched on the fundation of comprehending the new aeronautical standard of united states army - ads - 33, and has obtained the achievements as following : ( 1 ) performance definition of pcs according to the criteria requirements for an explicit helicopter, beginning at analysis of its missions. ( 2 ) establishment of a helicopter attitude controller, which can meet the criteria requirements, by using the technology of adaptive neural network model - inverse control ; implementation of two response types ( rts ) and two control modes ; evaluation of quantitative parameters according to the ads - 33. ( 3 ) establishment of a helicopter trajectory contoller based on the attitude controller ; simulations of mission task elements ( mtes ) and evaluation of handling quality

    為了給型號研製中飛行品質的規劃、分析和評價提供基本的、有效的工程實用工具，本課題在充分消化理解美軍新航標ads - 33的基礎上，作了以下工作： （ 1 ）針對具體直升機，從任務分析入手，根據規范要求確定對飛控系統的要求； （ 2 ）應用自適應神經網路模型逆控制技術，構造了能夠滿足飛行品質要求的直升機姿態控制器，實現了兩種響應型式、兩種控制模式，並根據ads - 33進行了定量指標評估； （ 3 ）在姿態控制器的基礎上，構造了軌跡跟蹤器，進行了任務科目基元模擬和飛行品質評估。
  9. The explicit method is widely used for its simpleness and little memory consumed with local time step and variable coefficients implicit residual smooth to accelerate the convergence procedure. according to yoon and jameson ' s ideas, an efficient implicit lu - sgs algorithm is carefully constructed by combing the advantages of lu factorization and symmetric - gauss - seidel technique in such a way to make use the l and u operators scalar diagonal matrices, thus the numeric algorithm requires only scalar inversion. the computational efficiency is greatly improved with this scheme

    顯式方法具有簡單，消耗內存小等優點，並採用當地時間步長、變系數隱式殘值光順等加速收斂措施，在定常流動的模擬中得到了廣泛的應用;根據yoon和jameson提出的簡化正、負矩陣分裂，構造的l 、 u運算元只需進行標量對角陣求逆，極大提高了流場數值求解過程的計算效率;採用newton類型的偽時間子迭代技術使時間推進精度提高至二階。
  10. This paper presents reversible digital field regulator with dsp and igbt, which is substituted for current analogue field regulator with thyristors as power element

    本文提出以dsp和igbt為核心來設計數字式可逆勵磁調節器，以取代現有的以晶閘管為功率元件的模擬控制的勵磁調節器。
  11. Thirdly, the snubbers are designed to compress the switching voltage transient. when igbt is abruptly turned off, trapped energy in the circuit stray inductance is dissipated in igbt, causing a voltage overshoot and damaging igbt. this paper analyzes the principle of the snubber and discusses the impact of the parameters of the snubber on voltage overshoot

    針對igbt工作過程中出現的電壓尖峰、電流尖峰和大的開關損耗問題，本文首先從理論上詳細分析了igbt逆變橋緩沖電路的工作原理，推導出緩沖電路各元件的參數計算公式，討論了緩沖電路各元件參數對關斷電壓波形的影響並進行了模擬分析。
  12. By laplace transforming the governing equation of the problem of unidirectional fiber reinforced composite materials, the formulae for predicting the viscoelastic relaxation moduli in laplace transformed domain are obtained. according to correspondence principle of viscoellastic mechanics and elastic, mechanics, the results of effective moduli for several s are obtained by using the finite element method of the homogenization. then effective relaxation moduli should be curve - fitted, according to the viscoelastic relaxation modulus formulae of many viscoelastic materials

    首先對單向纖維增強復合材料粘彈性問題的控制方程進行laplace變換，在像空間s中利用均勻化理論建立宏觀鬆弛模量的laplace變換泛函形式，根據粘彈性-彈性對應原理，用均勻化問題的有限元方法預報單向纖維增強復合材料在相空間中多個離散點的本構關系，然後根據典型粘彈性材料的鬆弛模量具有的函數形式進行曲線擬合，再通過對擬合出的函數進行laplace逆變換，從而再回到時間t域，就得到了單向纖維增強復合材料的鬆弛模量。
  13. Based on state - space method to study the inverter fed permanent magnet synchronous machine, the sorts of the switch fault are given and the causes for the faults are analyzed. it investigates the currents and torque of the drive system fed by six - step inverter and pwm inverter under the different fault condition, and the valuable results are got 2

    在利用狀態空間法深入分析永磁同步電動機變頻調速系統穩態特性的基礎上，分析了逆變器開關元件發生故障的類型及其原因，模擬分析了六階梯波逆變器、 pwm逆變器各種故障狀態下的系統動態特性，得出了一些有價值的結論。
  14. Push - pull current mode hfl inverter also is composed of four power switches. the simulation and experiment of a 500va experimental prototype indicates that this circuit has the advantages of less components, simple topology, the ability of four quadrant operation and high efficiency. the inverter does not need the symmetry of the components " parameters and can be applied to dc to ac conversion with single low input voltage source

    推挽雙向電流源高頻鏈逆變電路也是由四個功率管組成， 500va的原理樣機的模擬和實驗研究結果表明，該電路元器件少、電路拓撲簡單、能夠四象限可靠運行、變換效率高，並不要求器件參數的完全對稱，適合於輸入電壓較低的場合。
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