numerical iteration 中文意思是什麼
numerical iteration
解釋
數字迭代-
The new algorithm bases on bisection and secant iteration, which is different cuppen ' s method and newton iteration. the results of theoretical analysis and numerical testing show that convergent rant of our algorithm is obviously faster that of the classical algorithm
該演算法以割線法迭代為基礎，明顯不同與傳統的newton迭代法，理論和數值實驗表明改進的演算法的收斂性比經典演算法好 -
Compared with straight ray tracing, inversion of bending ray tracing is better when data of test are accurate. on the other hand, natural weight is introduced and numerical simulations and experiments of wlm on inversion of velocity and attenuation are also made, which show that wlm, with resistance of noises and convergence of iteration, may get good re - construction images
本文引入了物理意義明確的自然權，對基於自然權的加權阻尼最小二乘反演演算法（ wlm ）在速度反演、衰減反演中進行了數值模擬和試驗研究，結果表明wlm均能獲得良好的重建圖像，迭代收斂，抗噪能力強。 -
With the numerical iteration method we use the hnc integral equations to calculate the direct correlation function c ( r, t, p ) and the total correlation function h ( r, t, p ) in a soft - sphere ionic fluid which something like the system of the alkali - metal salts
我們採用迭代方法用超網鏈積分方程組計算了一種類似於堿金屬鹽的軟球離子液體系統的直接關聯函數c （ （ ? ） ， t ， ）和總關聯函數h （ （ ? ） ， t ， ） 。 -
A revised fuzzy control algorithm was developed to accelerate iteration convergence in numerical fluid dynamic simulation by adjusting the value of the under - relaxation factor
摘要在原來研究工作的基礎上，提出了一種改進的模糊控制方法，用以調整粘性流場迭代計算中亞松馳因子的值。 -
The hydraulic hitch is the common means that the operator be joined with the prime motor in farm machine. the paper made the hitch ? vector equation and found the solutions by newton iteration method through the strong numerical calculation function of computer. so the analytical solution insteaded the graphic method, the design accuracy and efficiency were acceptable
本研究推導了懸掛機構的矢量方程，並藉助于計算機強大的數值計算功能，用牛頓迭代法解決了解矢量方程的問題，從而用解析法取代了圖解法設計此類機構，提高了設計精度和效率。 -
The direct numerical simulation methods for turbulent spots in the channel, open - channel and boundary layer flows are built respectively. effective algorithms composed of time - advancing, over - relax iteration and multiple grid methods are planned to raise computational efficiency
分別建立了適用於在槽道、明渠和平板邊界層流動中直接模擬湍斑的數值方法，並精心設計了時間推進、超鬆弛迭代和多重網格等高效演算法，以提高計算效率。 -
As for the numericial mthods we present a method using newton iteration and lp ( lift - projection ) iteration to slove inverse real symmetric eigenvalue problems. then wo can choose any starting points, then wo can get good starting value for the purpose of the preconditioning the numerical examples show the method is efficient and available
對于數值演算法，將lp迭代和一般的newton迭代法結合起來求解含參變量的實對稱矩陣特徵值反問題， lp迭代預處理了newton迭代法的初始值，拓寬了newton迭代法初始值的選取范圍，數值例子也說明lp ? newton法具有較高的效率和實用性。 -
First of all, the algorithm base on the boundary problem of helmholtz equation and finite - difference technique, calculate the field in “ cold ” cavity and disperse the helmholtz equation, as a result of the formula : ax = x. secondly, according to the eigenvalue of matrix theory and applied iterative methods, eigenmode adopt a numerical approach which allows the improved chebyshev polynomial iteration which based on the power method to extract the isolated eigenmode in the spectrum. finally, we resolve the problem of compatibility in software and insert the eigenmode module into the chipic which will have the function of eigenmode analysis
具體的說: （ 1 ）首先以電磁理論中的亥姆霍茲方程的邊值問題理論和計算電磁學中的有限差分法為基礎，計算冷腔中的場分佈並離散亥姆霍茲方程，得到標準的本徵值問題: ax = x ; （ 2 ）然後根據矩陣理論中的eigenvalue問題和數值計算中的迭代方法，採用改進后的chebyshev多項式，在power迭代法的基礎上對ax = x進行多項式迭代，實現對頻譜中孤立本徵模的萃取; （ 3 ）最後將用fortran語言編制的eigenmode模塊加入到chipic軟體中，解決了eigenmode模塊與chipic主代碼的兼容問題，從而實現了chipic軟體的模式分析功能。 -
2. based on the inverse position equation and the jacobian matrix, the solution of direct position is obtained through the numerical iteration method. 3
在機構位置反解和速度雅可比矩陣的基礎上，利用數值迭代的方法對機構進行了正解求解，每次可以求得機構的一組正解。 -
We analyze the convergence of the new methods and give some results of numerical experiments in which we compare the new methods with the original subspace iteration method
本文分析了這兩個改進演算法的收斂性，給出了數值試驗的結果，並將新方法與原始子空間迭代法進行了比較。 -
Our numerical results show that the accelerated subspace iteration method by using chebyshev polynomials and the preconditioning subspace iteration method are superior to the original subspace iteration method
數值試驗結果表明用chebyshev多項式與預處理技術加速的子空間迭代法比原始子空間迭代法優越。 -
Because of need of much iteration in each time step while carrying on nonlinear numerical anaiysis, the incremefltal equilibrium formulation and its equivalent iterative equation of the constant average acceleration newnark method are deduced
鑒于橫縫非線性數值分析需要在每一時間步內迭代多次，推導了newmark常加速度增量平衡方程及其等效迭代格式。 -
Abstract : two computational techniques for inverse fight dynamics, namely derivation - iteration and integration - iteration techniques, are investigated. the application of inverse dynamics to determine control power requirements for post - stall maneuvering is researched, and a maneuvering flight trajectory based algorithm is provided, which lays a numerical foundation for simplifying design criteria for post - stall aircraft. with the model of inverse dynamics employed, a flight control mode for the outermost loop of the control system, named maneuver generator, is designed to follow desired complicated maneuvering flight trajectories. an example of rapid heading - reversal maneuver and other numerical simulations show the feasibility of the algorithm and the design idea
文摘:考察了求解輸入類飛行逆動力學問題的微分-迭代與積分-迭代演算法;探討了利用逆動力學確定過失速機動操縱效能要求問題，這構成了進一步提出過失速機動飛機設計簡化判據的數值基礎;利用逆動力學設計機動發生模塊進行飛控系統的最外環控制，以便跟蹤期望的復雜機動軌跡.飛機最速反向示例及其它數值模擬結果表明設計思想與演算法是可行的 -
When one tries to calculate the permeability distribution the iteration will lose its convergence. the author finds out the reasons for the divergence by means of theoretical analysis combined with numerical experiments
作者通過理論分析與數值實驗相結合的辦法找出它計算軟磁材料中磁導率分佈時迭代發散的原因，並作出相應的改進，解決了非線性磁場計算的問題。
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