最低向前速度 的英文怎麼說

中文拼音 [zuìdīxiàngqiánsùdù]
最低向前速度 英文
minimum forward speed
  • 最 : 副詞（表示某種屬性超過所有同類的人或事物） most; best; worst; first; very; least; above all; -est
  • 前 : Ⅰ名詞1 （在正面的） front 2 （次序在先的） first; top 3 （過去的; 較早的） ago; before; preceding...
  • 速 : Ⅰ形容詞（迅速; 快） fast; rapid; quick; speedy Ⅱ名詞1 （速度） speed; velocity 2 （姓氏） a surna...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 速度 : 1. [物理學] velocity; speed; blast; bat 2. [音樂] tempo3. （快慢的程度） speed; rate; pace; tempo
  1. Aim at the dtc ' s blemish mentioned above and the direction of dtc technique development, the dissertation put great emphasis on the work as follows, with an eye to exalt dtc system function : ( 1 ) a new speed - flux observer of an induction motor is proposed to enhance the accuracy of flux observing, which is an adaptive closed - loop flux observer and different from the traditions. a new adaptive speed - observation - way is deduced out according to the popov ' s stability theories ; ( 2 ) to improve the performance of dtc at low speed operation, we have to exalt the accuracy of the stator flux estimation and a new way of bp neural network based on extended pidbp algorithm is given to estimate and tune the stator resistance of an induction motor to increase the accuracy of the stator flux estimation ; ( 3 ) digital signal processor is adopted to realize digital control. an device of direct torque control system is designed for experiment using tms320lf2407 chip produced by ti company ; ( 4 ) bring up a distributed direct torque control system based on sercos bus, sercos stand for serial real time communication system agreement which is most in keeping with synchronous with moderate motor control ; ( 5 ) the basic design frame of the hardware and software of the whole control system is given here and some concrete problem in the experiments is described here in detail

    針對上面提到的直接轉矩控制的缺陷和未來直接轉矩控制技術發展方向，本論文重點做了以下幾個方面的工作，目的在於提高dtc系統的綜合性能： （ 1 ）提出一種新型的速度磁鏈觀測器，新型的速度磁鏈觀測器採用自適應閉環磁鏈觀測器代替傳統的積分器從而提高磁鏈觀測的精度，並且根據popov超穩定性理論推導出轉速的新型自適應收斂律； （ 2 ）改善系統的低速運行性能，主要從提高低速時對定子磁鏈的估計精度入手，提出了一種提高定子磁鏈觀測精度的新思路? ?利用基於bp網路增廣pidbp學習演算法來實時在線地修正定子電阻參數； （ 3 ）採用數字信號處理器dsp實現系統全數字化硬體控制，結合ti公司生產的tms320lf2407晶元，設計了直接轉矩控制系統的實驗裝置； （ 4 ）提出了基於sercos總線網路化分散式的直接轉矩控制系統， sercos （ serialrealtimecommunicationsystem ）是目前最適合同步和協調控制的串列實時通信協議； （ 5 ）基本勾勒出整個控制系統的硬體和軟體設計基本框架，詳細描述一些實驗中的具體的細節問題。
  2. In this paper, i will present some algorithms of polyhedral visual hull reconstruction : ( 1 ) polyhedral v isual h ull generation a igorithm b ased one dge - pool - searching, which constrains the 3 - d intersections into the 2 - d planes intersection via the epipolar theory to reduce the complexity a nd c an r educe t he t imes f or c ones t o b e p rejected o nto t he i mage p lanes, i n which we induced the index list to every points on the surface of object, and connected the related points to get sub polygons on surface and in turn get the mesh model, we replace triangulation process of disordered points cloud by edge - pool searching. ; ( 2 ) reconstruction based on degenerated - polygon - intersection, which have the following improvements on traditional bull intersection : using degenerated polygon to orga nize intersected area on cone face, which may be discontinuous ; a fast intersection algorithm of polygons on the cone face based on degenerated polygons, which is consistent between the continuous polygons and the discontinuous ones. the intersection of degenerated polygons is similar to the convergence of two ordered lists, which is comparably simple to the bull operation ; ( 3 ) reconstruction algorithm based on ray - tracing, in which all the rays that run through the vertex on silhouette of object will intersect with all the cones correspondent to other silhouette, and we have to calculate the intersection of all such line segments, the endpoints of which are considered to lie on the surface of object and we will get the point cloud on the surface of object

    同時利用共極線原理把三維計算投影到二維平面以降低求交計算的復雜度，該演算法可以減少光錐向圖像平面投影計算的次數，以邊池搜索取代散亂點集上進行的三角剖分； （ 2 ）基於退化多邊形求交的多面體可見殼模型重構，系統引入退化多邊形的概念，把錐體平面的交集中不連通的部分用一個退化多邊形來表示，並引入了新的基於退化多邊形的求交演算法，與傳統多面體可見殼重構相比，該演算法有以下幾點創新：在圖像平面以退化多邊形組織投影錐體和物體輪廓的交集，把任意錐面與物體輪廓的交集歸一到一個退化多邊形；基於退化多邊形的二維平面上多邊形快速相交演算法，該演算法在一定程度上就是兩個有序鏈表的合併，大大簡化了先前的布爾求交計算； （ 3 ）基於光線跟蹤的演算法，該演算法中所有通過輪廓頂點的光線和對應其它圖像輪廓的光錐進行求交計算，最後得到每次求交計算得到線段的交集，該線段的頂點就認為是物體表面點，從而得到物體表面的點雲。
  3. Mega - frame is composed of mega - frame which is the main structure and floor - frame which is the minor. mega - frame has characteristics of great rigidity, superior property as a whole, clear - cut transmitting mechanism, flexible using space, economical building materials, low prices and high speed of construction and so on. because of its efficiency, flexibility and economization, mega - frame has become one of the most promising structure systems for tall buildings

    巨型框架結構由作為主結構的巨型框架和作為次結構的樓面框架構成，它具有側向剛度大，整體性能好，傳力明確，使用空間靈活，節約材料，降低造價，施工速度快等特點，是一種集高效性、靈活性和經濟性為一體的新型高層建築結構體系，因而成為適合建造高層與超高層建築的最有前途的結構形式之一。
  4. The ? interest ? rate ? level ? and ? the ? interest ? rate ? structure ? unreasonable ? mainly ? display ? in : ? most ? recent ? several ? years ? because ? the ? government ? adopts ? the ? low ? interest ? rate ? policy, ? the ? interest ? rate ? level ? is ? in ? the ? historical ? most ? low ? point, ? saves ? the ? loan ? advantage ? difference ? unceasingly ? to ? reduce, ? the ? goal ? is ? the ? maintenance ? loose ? currency ? environment ? promotes ? the ? economy ? to ? grow, ? but ? individual ? deposit ? not ? only ? does ? not ? have ? massively ? to ? drain, ? on ? the ? contrary ? personally ? deposits ? 18 % ? speed ? fast ? growth ; ? these ? two ? years, ? and ? further ? because ? is ? the ? stock ? market, ? the ? fund ? rise, ? massively ? deposits ? the ? fund ? to ? flow ? to ? the ? stock ? market, ? this ? not ? only ? suppressed ? the ? commercial ? bank ? to ? provide ? the ? loan ? the ? impulse, ? moreover ? also ? caused ? the ? commercial ? bank ? to ? manage ? active ? the ? profit, ? the ? security ? and ? the ? fluidity ? comes ? under ? a ? more ? tremendous ? influence

    利率水平和利率結構不合理主要表現在：前幾年由於政府採取低利率政策，利率水平處于歷史最低點，存貸款利差不斷縮小，目的是維持寬松貨幣環境以促進經濟增長，但是個人儲蓄不僅沒有大量流失，相反個人儲蓄18 %的速度快速增長；這兩年，又因為股市，基金的上漲，大量儲蓄資金流向股市，這不僅抑制了商業銀行發放貸款的沖動，而且還使商業銀行經營活動的盈利性、安全性和流動性受到較大影響。
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