換向點 的英文怎麼說

中文拼音 [huànxiàngdiǎn]
換向點 英文
crossover point
  • 換 : 動詞1. （給人東西同時從他那裡取得別的東西） exchange; barter; trade 2. （變換; 更換） change 3. （兌換） exchange; cash
  • 點 : Ⅰ名詞1 （液體的小滴） drop （of liquid） 2 （細小的痕跡） spot; dot; speck 3 （漢字的筆畫「、」）...
  1. Based on the fact of driven gear moving prior to normal locality when driving gear pair moving from upper dead center to lower dead center, considering all influential elements, the maximum backlash of gear pair can be controlled to satisfy the special driving requirement through controlling the length and deviation of its common normal without increasing its manufacture precision

    摘要根據換向傳動齒輪副從上止點向下止點運動時被動齒輪運動超前的實際，從影響齒輪副側隙的各種因素出發，在不提高齒輪副製造精度的前提下，通過拉制齒輪副公法線長度及其偏差從而有效地控制齒輪副的最大齒側間隙，以滿足傳動的特殊要求。
  2. Utilizing the characteristics of quick response, easy for automatization and easy to realize frequent commutation of the hydraulic system, this mechanism can be employed in composing the compound movement in horizontal and vertical direction, which could realize accurate simulation of the motion law for motorcycles and automobiles under the effect of random load in high frequency

    利用液壓系統反應快、便於自動化、易於實現頻繁換向的特點，該機構可用來合成水平、垂直方向的復合運動，實現對摩托車、汽車等在高頻隨機載荷作用下運動規律的精確模擬。
  3. Design engineers now selecting pmbldc motors over conventional dc or induction motor drives for the following reasons : 1 ) the absence of brushes results in an essentially maintenance free operation and eliminates the undesirable effects of commutation such as sparks, brush - loss, radio - frequency interference, etc. 2 ) the low inertia of the rotor enhances the quality of the mechanical response of the motor, shortening the acceleration and deceleration time. 3 ) utilizing rare - earth permanent magnet materials with high coercive force results in substantially higher efficiency than their counterpart with brushes of the same size. 4 ) because of the absence of commutation segments, the stator construction is simple

    現在的工程師們更為青睞永磁無刷直流電動機是因為以下幾點原因： （ 1 ）去除了電刷的永磁無刷直流電動機徹底地免除了維護而且消除了我們不希望的由於換向帶來的火花、電刷損耗以及無線電干擾等等； （ 2 ）低轉動慣量的轉子提高了電機機械響應的質量，從而縮短了電機加速和減速的時間； （ 3 ）高矯頑力稀土永磁材料的使用使得同樣尺寸的永磁無刷直流電動機比傳統的直流電動機效率高； （ 4 ）由於沒有機械換向部分定子的結構簡單了。
  4. In this paper, the characteristics and types of interchange behavior are analyzed from interchange position, time, directions and the ways of passenger behavior

    摘要從地鐵換乘行為分析入手，分析地鐵換乘車站內的換乘方向與換乘點、換乘方式、換乘時間等換乘行為特點，換乘行為類型。
  5. According to test results of two specimens of local transfer rc joint from inclined column to beeline - shaped wall under vertical static loads and results of corresponding finite element analysis ( ansys ), fundamental behaviors of the joint are achieved, which include paths of vertical load transfer before and after cracking, stress distributions, occurrence and development of cracks and final failure mode of the joint

    本文通過兩個鋼筋混凝土斜柱?一字形薄壁柱局部轉換節點在豎向荷載作用下的靜力試驗以及有限元分析，獲得了該節點的基本性能，其中包括開裂前後的豎向荷載的傳遞路徑、試件應力分佈，裂縫的發生、發展，及試件最後的破壞形態等。
  6. This paper uses " virtual neutral point method " to measure the " zero crossing ", then the soft deal " zero crossing " to get the six key position to commutate

    本文採用虛擬中點的方法來識別反電勢過零點，然後對過零點進行處理得到無刷電機換向的六個關鍵位置。
  7. The system uses the microchip pic16f877 made by microchip co. ltd as a control chip. it fulfills the capture of " zero crossing " point and the multifarious protective functions. it realize the approximately exact commutation of the motor and unmanned supervision of the system

    本系統是以microchip公司生產的pic16f877為核心晶元，軟硬體結合完成對反電勢過零點的捕捉和系統的各種保護，實現了電機較為準確的換向和無人監控安全運行。
  8. The chip jk3ce that is one of micro - controllers in motorola 68hc08 family is used as control unit in this system. the zero crossing point of the back emf can be obtained by comparing the terminal voltage with the virtual neutral point, then using the software of the system can figure out the commutation period. the electronic commutation replaces the mechanical commutation in this way

    本系統採用的控制晶元為motorola系列單片機中的jk3ce ，反電勢過零點可以通過比較電機端電壓和虛擬中點電壓來得到，將過零點信號送往單片機捕捉埠後由系統軟體來確定換相時刻，這樣就可以由電子換向裝置替代機械換相裝置，有利於提高系統運行的可靠性，並降低了系統維護的費用。
  9. The host pumps and the auxiliary pump adopts the hydraulic and pneumatic united drive, the movement is nimble and reliable

    主泵、副泵採用液氣聯合驅動及無觸點電氣控制系統，運行平穩，換向靈敏可靠。
  10. Roadway lighting equipment - enclosed side - mounted luminaires for horizontal - burning high - intensity discharge lamps - mechanical interchangeability of refractors

    道路照明設備.橫向點燃高強度放電燈用封閉側裝式燈.折射器的機械可互換性
  11. The result indicate that there is much difference between the hollow inclined column - wall transfer r. c joint and the solid inclined column - wall transfer r. c joint on the mechanism of load transfer

    結果表明有孔斜柱轉換節點和無孔斜柱轉換接點的豎向受力性能和傳力機制存在著明顯的差異。
  12. As far as he hollow inclined column - wall transfer r. c joint is concerned, the stress state of transfer beam is very critical, because it bears not only the vertical load transferred from the wall, but also the axial load initiated by the inclined column

    對有孔斜柱轉換節點而言，轉換梁的受力最為不利，它不僅承擔由薄壁柱傳來的垂直荷載，而且還承擔由斜柱水平分力引起的軸向拉力，即截面上有彎矩、剪力和軸力的共同作用。
  13. Have not finished or done the wrong sushi, so long as order another kind of sushi board in the same direction, can switch over it as making another kind of sushi

    沒做完或做錯的壽司，只要在同一方向點另一種壽司木牌，即可切換為製作另一種壽司。
  14. However, the traditional dc motor uses brush so as to switch the phases, so there are relative mechanical frictions. then it comes out many fatal failing, such as yawp, spark, wireless disturb, etc. what " s more, its making cost is high, its maintain is also difficult, therefore its application is greatly limited

    直流電動機具有運行效率高和調速性能好等諸多優點，但傳統的直流電動機均採用電刷，以機械方法換向，因而存在相對的機械摩擦，由此帶來了噪聲、火花、無線電干擾以及壽命短等致命弱點，再加上製造成本高及維修困難等缺點，從而大大地限制了它的應用范圍。
  15. Abstract : taking affine transformation for example, the influenc e of distribution and number of orientation points on accuracy of transformation coefficients is discussed in detail in this paper, and the conclusions are help ful to practice

    文摘:以仿射變換為例詳細討論了定向點的分佈、數量對變換系數的精度影響，所得出的結論對實際工作具有指導意義。
  16. The emphasis of this paper is the commutation control of sensorless bldc motor, which is used to drive photovoltaic pumps

    本文所研究的重點是無位置傳感器直流無刷電機的換向控制，電機驅動的對象為光伏水泵系統。
  17. The automatic moving welding welding instrument uses contactless control circuit. to start motor and change direction are very reliable, so prolong the working life notably

    埋弧焊小車採用無觸點控制電路，電擊啟動，換向特別可靠，使壽命顯著提高。
  18. It elaborates on the 3 - step start technique. i adopt the method which permits the bldc motor to automatically search the best time to change its operation stage from a separately controlled synchronous one to a self controlled one using the back emf as the commutation signal. this method prevents the stepping out and stopping problems in the changing procedure of the motor

    闡述了電機的三段式起動方法，在直流無刷電機由起動階段外同步運行切換到反電勢換向自同步運行的過程中採用了自尋最優點切換的方法，保證了電機在切換過程中不會發生失步和停轉現象。
  19. Acceleration at the reversal point

    換向點加速度
  20. The sensing for rotor flux position of bldc motor is the key of commutation, so this paper expatiates on three different methods to sense rotor flux position and compares their advantage and disadvantage

    因為無位置傳感器直流無刷電機的轉子位置檢測是其準確換向的關鍵所在，所以本文對幾種不同的轉子位置檢測方法進行了闡述，並比較了其優缺點，希望能有一點借鑒的意義。
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