矢量三角形 的英文怎麼說
中文拼音 [shǐliángsānjiǎoxíng]
矢量三角形
英文
triangle of vectors-
In data processing, several data file format exported from measuring system has been analysis in detail, and some research has been made in these file - formats, and some try was made also. the decision standard of a thin and long triangle was discussed. besides the minimum angle of a triangle, there also the no - equlangularity and the ratio of radius of inscribed circle and circumcircle of a triangle
比如利用vc6 . 0開發了程序，可以計算三角片的法矢量、三角片的一些特徵信息，以及狹長三角形的判斷，特別是分析了除最小角之外的兩個判斷標準：外接圓和內切圓半徑之比值r r ，以及三角形的不等邊度e ，及它們與最小角之間的一致關系。Based on the three new supposition and the tow new mechanical tools : moment vector and radius vector, the warping theory introduced the analytical method of the rotation of a cross section around a fixed axis, so as to make the space stability of the thin - walled member complanate and one - dimensioned
翹曲理論以三條新的假定和新建立的彎矩矢量和轉角向徑兩大力學工具為基礎，提出了繞定軸轉動的分析方法，使薄壁構件的空間變形平面化、一維化。The profit signal and noise vectors are orthogonal to each other, so the variation vector is the hypotenuse in a right triangle
有效信號適量和噪聲信號適量相互正交，所以變量矢量是直角三角形的斜邊。The paper presents several aspects in partition rectification and visualization of raster image. adopt technology of visualization for scientific calculation, vector diagram of deformation 、 contour chart of deformation and drawing of three - dimensional are realized. delaunay tin in view of deformation feature is constructed on base of selected grid control points and methods and mathematical models for partition rectification are realized based on the delaunay tin. software of geometric rectification for large scales are realized and applied in project
本論文針對柵格影像的變形可視化及分塊糾正展開研究，取得了以下幾方面的研究成果：一、採用科學計算可視化技術，繪制變形矢量圖、變形等值線圖和三維效果圖，實現了柵格影像變形特徵的可視化；二、提出了在格網控制點（ gcp ）數據基礎上選擇性構造顧及變形特徵的delaunay三角網，並基於構造的三角網實現了分塊糾正的方法和數學模型；三、採用vc編制了影像幾何糾正軟體，實現大比例尺掃描地形圖的糾正，並在工程中得到應用。Through the analyzes of electromagnetic system of a axial symmetry by the method of electromagnetic vector potential, an eddy current field math model is build by triangle cell, this article has researched the effect of power frequency to eddy current density, penetration depth and the skin effect
本文以電磁場矢量位有限元法為基礎對二維軸對稱場的磁場強度、渦流密度進行了計算求解，採用三角形單元和六面體單元建立了渦流場數學模型，研究了電源頻率對渦流密度、透入深度及集膚效應等場量的作用影響。Through the analyses of electromagnetic system of configuration of hollow metal cylinder by electromagnetic vector potential, an eddy current field math model is built by triangle cell, this article has researched power frequency to eddy current density, permeation depth and the effect of skin effect
文中通過對一個空心金屬圓筒結構的電磁系統進行分析，以電磁場矢量位有限元法為基礎對磁場強度、渦流密度進行了計算求解，採用三角形單元建立了渦流場數學模型，研究了電源頻率對渦流密度、透入深度及集膚效應等場量的作用影響。Thirdly, it utilizes line tracking and douglas - peucker line - simplification algorithm to realize the raster - to - vector conversion. a triangulated irregular network ( tin ) is constructed based on vector data, and dem point - array data is computed by interpolating grid on tin
第三，使用輪廓線跟蹤演算法和dpl多邊形近似方法實現等高線數據的矢量轉換;並基於等高線矢量數據建立不規則三角網，再內插格網生成dem點陣數據。Abstract : basing on the introduction of brim - vector and face - vector, by means of analogy, the paper popularizes the cosine - theorem from flat - triangle to vacuum - polygon and arbitrary - polyhedron, concludes a series of generalized cosine - theorems which have symmetric and conformable form, and presents short and strict proof
文摘:在引入邊矢量及面矢量概念的基礎上，以類比作為手段，對餘弦定理進行由平面三角形到空間多邊形乃至任意多面體的一系列推廣，得出了形式對稱一致的一組廣義餘弦定理，並給出了其簡捷嚴謹的證明。The moment method is used to calculate the rcs of three - dimensional targets in this paper. these targets include conducting targets, dielectric targets and coat targets. triangular patches are used to model the surface of the target, then electric field integral equation ( efie ) and magnetic field integral equation ( mfie ) are built which satisfy the boundary conditions. the rwg vector base functions are used to denote equivalent electric current and magnetic current on the surface of the target. finally use the galerkin method ( rwg vector base functions are basis function and test function ) to transform integral equations into matrix equation. when obtain the equivalent electric current and magnetic current, we can calculate the scattering field and the rcs of the target
本文利用矩量法計算了三維導體目標、介質目標、塗層目標的雷達散射截面。首先採用三角形面元對物體表面幾何形狀進行模擬，然後建立滿足邊界條件的電場積分方程（ efie ）和磁場積分方程（ mfie ） ，將物體表面的等效電磁流用rwg矢量基函數表示，最後利用伽略金法（ rwg矢量基函數既作為基函數又作為檢驗函數）將電磁場積分方程轉化為矩陣方程求解未知電磁流系數，得到了表面的等效電磁流后，可以計算散射場和目標的雷達散射截面。Firstly, this paper introduces the asynchronous motor model, and compares it with the dc motor ’ s. then the paper studies the principle of vector control, and proposes an improved current model of rotor flux observer. this paper also studies the three - level inverter ’ s topology, working principle, the neutral - potential unbalance mechanism and its controlling strategy. the paper especially studies the svpwm in details. the interface between the vector control and the three - level inverter is studied in details, including the generation of reference voltage vector, its judging of the sector and triangular regions, and the working mechanism after it sent into three - level inverter. when synthesizing the reference voltage vector, select the vector which only includes p and o states as the starting vector, thus eliminate the vector shift problem when sector changes. this paper fully takes advantages of the powerful functions of matlab / simulink to set up the simulation model. this construction is very explicit. the simulation results verify the inverter voltage output is correct, the rotor flux is steady, the asynchronous motor ’ s dynamic and steady state performances and speed modulation are excellent
本文首先介紹了異步電機的數學模型，在此基礎上將異步電機的數學模型與直流電機的數學模型進行了比較;然後介紹了矢量控制的基本原理，採用了一種改進的轉子磁鏈電流型觀測模型;對三電平逆變器的電路拓撲、工作原理、中點電位不平衡的機理及控制方法進行了介紹，詳細分析了空間矢量脈寬調制策略。本文對異步電機的矢量控制與三電平逆變器之間的介面進行了詳細的研究，包括:參考電壓矢量的形成、所落扇區與具體小三角形區域的判斷、送入逆變器之後的工作機理。在參考電壓矢量的合成時，選擇只包含p 、 o狀態的空間電壓矢量作為起始矢量，解決了扇區切換時的矢量突變問題。In the part 2 of advanced audio video coding standard avs - p2, many efficient coding tools are adopted in motion compensation, such as new motion vector prediction, symmetric matching, quarter precision interpolation, etc. however, these new features enormously increase the computational complexity and the memory bandwidth requirement, which make motion compensation a difficult component in the implementation of the avs hdtv decoder
在avs - p2中傳統的運動補償技術被進一步改進以獲得更好的編碼性能。這些新的特性包括：預測塊大小可變化1616到88基於矢量三角形的新型mv預測多參考幀最多2幀或4場直接或對稱模式匹配不限制的mv和1 4精度像素插值等。This paper mainly discusses the following aspects : the creation method of irregular triangular network from regular grids, fast computing method of vertex normals in tins, the creation method of multiresolution terrain models and method of view - dependent real - time rendering
本文具體研究內容集中於基於規則格網的不規則三角網生成演算法、不規則三角網頂點法矢量的快速計算方法、多解析度地形模型的構造方法和視點相關的實時繪制方法。Two cases are analyzedxonducting target with coat and dielectric target with coat. for the conducting target with coat, triangular patches are used to model the surfaces of the coat and the conducting object. now there have equivalent electric current and magnetic current on the surface of the coat, but only has equivalent electric current on the surface of the conducting object. the rwg vector base functions are used to denote equivalent electric currents and magnetic current. three integral equations should be built to obtain the unknown current coefficients ; for the dielectric object with coat, triangular patches are used to model the surfaces of the coat and the dielectric object. now there have equivalent electric current and magnetic current not only on the surface of the coat but also on the surface of the dielectric object. this time four integral equations should be built to obtain the unknown current coefficients
對于塗層導體目標，將塗層外表面和導體外表面進行三角形面元剖分，在塗層外表面有等效電磁流，導體外表面僅有等效電流（無等效磁流） 。將這些等效電磁流用rwg矢量基函數表示，需建立三個積分方程來求解未知的電磁流系數；對于塗層介質目標，將塗層外表面和內層介質外表面進行三角形面元剖分，在塗層外表面有等效電磁流，內層介質外表面也有等效電磁流，這時需建立四個積分方程來求解未知的電磁流系數。Second, we present a rapid algorithm for triangle modeling and normal reconstruction for mesh data points that have been simplified
對于簡化后的網格數據點，提出一種快速的三角形建模和法矢量重建的演算法。This paper emphatically researches some typical search algorithms based on block matching of motion estimation, such as 155, fss, tdl, cs and ds. aimed at questions existing in these algorithms, under the elicitation of man vision system, the author designs a new integrative pattem ( sdp ) ftom the bionic view, which shows a parallel processing idea of coarse location and accurate orientation, and then presents a new square - diamond search ( sds ) algorithm for block matching motion estimation. the results of experiment prove that not only the new sos is much faster than above traditional algorithms, but also its psnr and visual quality of the retrieval images are better than those of other algorithms, and as nearly good as that of fs
本文重點研究了三步法（ tss ） 、四步法（ fss ） 、二維對數法（ tdl ） 、交叉法（ cs ）和菱形法（ ds ）等經典的基於塊匹配的運動估值演算法；針對它們存在的問題，在人眼視覺系統的啟發下，從仿生學的角度設計了一種新的綜合模板（ sdp ） ，它體現了粗定位和準確定位并行處理的思想，在此基礎上提出了一種新的用於塊匹配的搜索演算法?正方形?菱形搜索（ sds ）演算法；實驗證明：該演算法的搜索速度比fs 、 tss 、 fss 、 tdl 、 cs和ds都快，而且根據運動矢量恢復出的圖像在psnr和主觀視覺效果方面都和fs相當，比其它演算法要好。The absolute velocity was decomposed based on the law of velocity triangle, the absolute tangential velocity, the relative velocity and the relative tangential velocity were presented in this paper
在測得轉輪內部的絕對速度矢量后，按速度三角形原理進行分解，得到了絕對速度切向分量、相對速度及相對速度切向分量。Abstract : the tolerance and generation of the stair - error in rp were studied. by using the normal vector information of the tringon facets in stl file, a calaculating method of stair - error was proposed and a slice - adapt algorithm which will save the time of mold manufacturing was presented
文摘:研究了快速成型過程中階梯誤差的產生與度量，並利用stl文件中的三角形面片的法矢量信息給出了階梯誤差的計算方法，提出了可變分層厚度的演算法，採用自適應分層來減少成型時間的方案分享友人