planar point 中文意思是什麼

planar point 解釋
平點
  • planar : adj. 1. 平面的；在平面上的；平的。2. 【數學】二維的，二度的。
  • point : n 1 尖頭，尖端；尖頭器具；〈美國〉筆尖；接種針，雕刻針，編織針；小岬，小地角；【拳擊】下巴。2 【...
  1. Let p be a finite planar point set with no three points collinear

    設p為一個無三點共線的有限平面點集。
  2. In this paper we consider only finite planar point sets in which no three points are collinear

    本文討論平面上無三點共線的有限點集。
  3. In order to obtain the image of absolute point, we design two kinds of planar model. and they are equilateral - polygon planar model and planar model that containing more than two circles

    為了從圖像中獲得圓環點的圖像，我們設計出二類不同的平面模板：正多邊形平面模板和包含二條以上圓曲線的平面模板。
  4. A general stack equation of mobile robot based on analyzing the motion of planar motion object and the mathematical models of four different kinds of common wheels is developed, accordingly, the mobility of mobile robot is addressed and the forward and inverse solutions to speed for specific configuration driven by differential speed are derived. utilizing the muir and newman convention, the description of the posture transformation matrices between different coordinate frames and the solution for the speed of point located on these frames are introduced. according to posture estimation, a more accurate method, dead reckoning algorithm, is developed for a specified configuration characterized by differential speed motorization, and simulations of this algorithm and other traditional methods are carried out using matlab while traversing a circular path

    本文對兩輪差速驅動移動機器人的運動學及其本體緩沖設計進行了探討，在對平面運動物體運動分析的基礎上結合四種常用車輪的數學模型，推導出了一個通用的移動機器人堆積方程，在此基礎上分析了移動機器人的移動能力、並針對兩輪差速構型推導了速度正解與逆解；使用muir和newman的運動學建模方法，推導了移動機器人上點及連桿坐標系位姿、速度變換關系矩陣及求解方法；在移動機器人位姿識別方法中結合差速驅動構型對航位推演算法進行了分析：推導了一種理論精度較高的航位推算演算法，並使用matlab對其與傳統的推算演算法在跟蹤圓弧軌跡情況下進行了模擬；最後針對本文所研究的機器人給出了一種比較系統、可靠的緩沖結構設計思路，較好地解決了移動機器人作業過程中外界因素及本身設計中引入的各種不確定誤差問題；本論文研究成果已在本實驗室所開發的樣機上得到實現，經過應用與考核證明其中的分析與設計是切實可行的。
  5. But due to the difficulties of the theoretical calculation and the limitation of the technique of image display, only some two - dimensional graphs of electromagnetic field of a planar set of point charges or symmetrically and uniformly charged bodies, which ignores the boundary effect, are introduced in the present electromagnetics teaching materials, which brings much incovenience for the acquaintance of the electrostatic field

    然而，由於受理論計算和圖象顯示技術等因素的限制，目前的電磁學教材中，通常只能給出平面分佈的點電荷系或具有較強對稱性、忽略邊界效應的帶電體的電力線和等勢線的二維平面圖，這給靜電場分佈的感性認識帶來了一定不便。
  6. In this paper, on the basis of existing tracing method and differential coefficient method, five new methods are put forward, superposing of infinitesimal element - tangent method, differential coefficient - tangent method and equation method, by taking advantage of fast calculating ability of the computer. two - dimensional planar electrostatic field of complicated charged bodies are simulated successfully with these methods. the changing trend of electric field along a certain direction of a set of point charges are also given in this paper

    本文利用計算機快速準確的計算能力及其強大的圖形處理功能，在現有循跡法和微分法的基礎上，提出了微元疊加一切線法、微分一切線法以及方程法方法，成功地模擬了一些復雜帶電體的二維平面靜電場以及平面分佈的點電荷系的電場沿空間某方向的變化趨勢。
  7. Abstract : a numerical model which can evaluate the movement of each individual occupant is developed, the model which divides a building setting into planar grids can described the position of each occupant at any point of time. the movement speed and direction of each occupant are dominated by the characteristic in the grids such as density, location etc. the approach in calculating movement pattern of each occupant and the exact evacuation time have been demonstrated in this paper, the result of the simulation is more accurate than that of the other software

    文摘:將建築物在平面上劃分成能反映人員具體位置的幾何坐標網格，根據不同人員在不同網格內的移動特性確定其移動速度，建立了描述人員疏散過程的數學模型，用場模擬的方法可以準確得到建築物疏散時間和人員疏散軌跡，其模擬結果與國外同類軟體對比具有較好的精度。
  8. First according to the fact that tangential components of the evolution do not affect the geometric shape of the evolving curves, we introduce the evolution equation of geometric quantities for the general planar curves. then we describe the work of gage - hamilton briefly. last we consider a special curvature flow of curve which evolves with speed function of the principal curvatures along the inner norm and show that convexity of the curve is kept and its length and area are contracted if the initial closed curve is smooth and convex. so the final shape of the curve will be a point in finite time

    首先根據曲線在切向分量上發展是不影響曲線的發展形狀，我們引入了曲線的一些幾何變量的發展方程；其次我們簡要地回顧gage - hamilton研究曲線發展的一般步驟；最後我們考慮沿曲線的內法線以曲率的函數為發展速度的一類特殊的曲線族，證明了在初始曲線為凸的閉平面簡單曲線條件下，曲線將保持凸的，並且它的面積和周長將同時收縮，並在有限時間內成為一個點。
  9. The topic is from the national " 973 " project " the new principles and methods of high - performance electronic components of digital product design manufacturing ". closely combing with the high - speed high - precision planar parallel position robot developed by the project, we have carried out a deep research on robot control system architecture, time - optimal control algorithm and servo system control algorithm, achieving high - speed and high - precision point to point control and trajectory tracking control

    本課題來源於國家「 973 」計劃項目「高性能電子產品設計製造精微化數字化新原理和新方法」 ，密切結合該項目所開發的高速高精度平面並聯定位機構，對機器人控制系統體系結構、時間最優控制演算法以及伺服系統控制演算法進行了深入的研究，實現了高速度、高精度的點位控制和軌跡跟蹤控制效果。
  10. 2 xu j, zheng b, lee w - c, lee d l. d - tree : an index structure for planar point queries in location - based wireless services. ieee trans. knowledge and data engineering tkde, 2004, 16 : 1526 - 1542

    在本文中，作者提出了一種基於廣播的位置相關數據發布機制，其目標是減少最近鄰居查詢nearest neigbour query和區域查詢range query的協調時間和訪問時間。
  11. This article researches mostly on how to improve the convex hull algorithm of planar point set

    本文的主要內容是對凸包的演算法進行改進。
  12. The aim of this work is to discuss some erdos " problems of finite planar sets. a finite planar set is k - isosceles for k 3, if every k - point subset of the set contains a point equidistant from other two

    稱一平面點集f是k -等腰集（ k 3 ） ，如果f的任一k -元子集中均含有三個點，使得其中一點到另外兩點的距離相等。
  13. In chapter 2, by studying the computation of the quantities of singular point of the original of the following complex autonomous polynomial differential system two linear recursion formulas for the computation of quantities of singular point of system ( 1 ) are obtained. applicable formulas are presented unitedly for the computation of focus quantities and saddle quantities, which play an important role in center - focus determination and bifurcation of limit cycles in real planar polynomial differential systems

    在第二章，我們研究平面多項式復自治微分系統原點的奇點量計算，得到了奇點量計算的線性代數遞推公式，統一地給出了在實平面多項式微分系統的中心焦點判定與極限環分支中有著極為重要意義的焦點量與鞍點量的易於應用的計算公式。
  14. In the first part of this thesis, the method of data collection for building a 3d scene based on a planar vector map is studied. to the most difficult problem in data collection : the evaluation of contour line, a suit of effective automatic assisting method is advanced, which can remarkably shorten the process period and improve the efficiency of spatial data collection. the main idea of this method is " control point congregating automatically and close control point cooperating "

    本文主要研究了基於二維矢量圖如何獲取構建三維場景所需的空間數據，包括地形、地物的二維數據採集與三維建模方法，並針對數據獲取中的主要難題，即等高線高程賦值問題，提出了一種基於高程式控制制點自動聚集、相近控制點協作的自動處理方法，顯著縮短空間數據獲取的處理周期。
  15. The purpose is to study the solution of impulsive dynamics of planar discrete system with friction and multiple - point impact

    研究受到多個打擊的離散系統考慮庫侖摩擦時動力學的求解方法。
  16. A method for complicated planar contour fitting is presented : 1 ) first all the data points used in the contour are ordered ; 2 ) after calculating the curvature of each contour point, the points with bigger curvature are taken as feature points ; 3 ) the contour is segmented by feature points ; 4 ) the contour is globally constructed through determining the segments types ( line or circle ) and the constraints with the neighbor segments ? the generation of skin surface is realized with the interface of caa

    研究了基於點雲數據的復雜截面線生成技術： 1 ）對輪廓數據點進行排序； 2 ）近似計算輪廓數據點處的曲率，取出曲率較大的數據點，並定義取出的數據點為特徵點； 3 ）以特徵點為分界點對輪廓數據點進行分段： 4 ）判斷分段數據點確定的曲線類型和各分段曲線之間的約束關系，進行基於約束的分段平面輪廓曲線整體擬合。
  17. ( 4 ) the special geometric restrictions like parallelism and perpendicularity implicated in vanishing elements are deeply studied. in single - view case, the theory is presented to interpret relationship between two planar lines by applying 3d invariants of vanishing points. in two - view case, the method on extraction vanishing point of an arbitrary sp atial line is described, and moreover, the theory is presented to interpret relationship between two elements in 3d space, such as two lines, two planes, line and plane, and so on

    （ 4 ）詳細論述了消失元素（消失點、消失直線、消失平面等）所體現的垂直、平行等特殊幾何約束關系；對單視圖，提出了一種利用消失點列的3d不變量解釋平面直線關系的方法；對雙視圖，提出了利用自共軛三角形和對極幾何約束，提取任意直線的消失點的演算法，並在此基礎了提出了一種利用消失元素的3d不變量解釋直線間、直線與平面間、平面間等多種空間幾何關系的方法。
  18. The key point of the fabrication of integrated optical devices is to prepare the planar waveguide structure with high quality

    在器件製作方面，最關鍵的是製作高品質的平面光波導。
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