virtual zero 中文意思是什麼

virtual zero 解釋
虛零
  • virtual : adj. 1. 實際上的，實質上的，事實上的。2. 【物理學】虛像的。3. 【物理學】有效的；【計算機】（網上）虛擬的。4. 〈古語〉具有可產生某種效果之內在力的。
  • zero : n （pl zeros zeroes）1 【數學】零；零號。2 零位；零點，起點；（溫度表的）零度，冰點；座標原點；無...
  1. In general, a precise resistor is in series with one of the resistors in wheatstone bridge to compensate the zero offset, and the other one is in parallel with another arm of the wheatstone bridge to compensate thermal zero drift. based on this principle, in this paper, a compensation method based on virtual instrument technology has been put forward. actuated by current source, a good calculation method of compensation resistors and their position in the bridge is deduced

    本文基於串並聯電阻補償法的原理，提出了一種基於虛擬儀器的誤差補償方案，推導了在恆流源供電下可以精確的計算出補償電阻大小和補償位置的演算法，並且在虛擬儀器軟體平臺labview上完成了數據採集、處理、顯示等軟體的設計，經過實驗的驗證，對傳感器的零點溫度漂移補償取得較好的效果，而對靈敏度溫度漂移的工藝補償亦有一定的效果。
  2. 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。
  3. 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。
  4. This immediately tells us that the virtual quanta necessarily have to be short lived. thus the vacuum has a non - zero and very large value of energy density associated with it

    能在極短時間內復歸于無，在不違反能量時間測不準定理的情況下，短暫的能量不守恆是容許的，所以真空可擁有一個非零而非常大的能量密度。
  5. By calculating the feynman diagram in rtf, we find that when taking into account both the thermal photon emission, absorption and the virtual photon exchange processes, the infrared divergences at zero and finite temperature can be cancelled at the same time. the full quantum calculation results for soft photon radiation coincide completely with the poisson distribution obtained in the semiclassical approximation ( the coupling of the classical current and quantized field )

    通過實時溫度場論下的費曼圖計算，我們得到：將實光子的發射、吸收，虛光子的交換過程同時考慮時，零溫場論中出現的和由溫度效應引起的紅外發散都能得到消除；並且完全量子場論下的軟光子輻射幾率與半經典近似下（經典的電流和量子化的電磁場之間的耦合）得到的泊松分佈結果完全一致。
  6. A new hvia architecture based on via ( virtual interface architecture ) is put forwardo hvia shortens the delay of remote memory access by 24. 5 % compared with via architecture, and the end - to - end bandwidth is increased by 80. 5 % because of the implementation of zero - copy protocol compared with non - via architecture o 2

    在via虛擬介面結構的基礎上，提出了一種硬體虛擬介面結構（ hvia ） 。與via相比， hvia結構平均減小遠程訪問延遲24 . 5 ；與非via結構相比，由於實現了「零拷貝」協議，帶寬平均提高80 . 5 。
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