pi key 中文意思是什麼

pi key 解釋
圓周率鍵
  • pi : n. 1. 希臘字母表的第十六字母 〈Ⅱ π，和英語的 p 相當〉。2. 【數學】圓周率。adj. 〈英學俚〉虔誠的，有道德的，宗教性的 〈pious之略〉。n. ,vt. 〈英國〉＝pie3.
  • key : n 1 鑰匙。2 要害，關口，要沖。3 關鍵，線索，秘訣；解法。4 （外國書的）直譯本，圖例，題解，圖解，...
  1. To accept the current signal from high negative voltage circuit, the analog ground is raised to a certain positive voltage, which makes it possible for the signal amplitude to be compressed at the same time of its polarity reversion. a pi control program special for laser gyro current control is brought forward according to the conventional pid control method, in which the control signal is figured out corresponding to the difference between the sample and the reference value by turn of proportion - short step integral - long step integral. and at the end of this paper, a comparison of system performance on different conditions is made and the key elements influencing system performance are educed

    利用集成a / d 、 d / a轉換器的新型晶元aduc824 ，實現了電流（電壓）采樣?數據處理?電流控制的閉環控制結構；地電位的抬升解決了a / d轉換器對負高壓迴路電流采樣時的輸入范圍匹配問題；控制信號反相的同時進行幅度壓縮，使得輸出調整電壓的解析度提高；根據常規的比例?積分?微分（ pid ）調節模型，針對陀螺系統的特性，給出了一種可以滿足系統要求、據采樣值偏差大小進行的比例?大步長積分?小步長積分、分層次比例?積分演算法；不同條件下系統穩流性能的對比、分析在論文最後給出，並據此找出了決定該系統穩流精度的關鍵因素，提出了系統的改進意見。
  2. There are two egfr signaling pathways, one is the classical ras / raf / mek / mapk pathway and the other is pi - 3 - k / pkb pathway. in this part, the phosphorylation and / or activity of some key molecules in these two signaling pathways in differently transfected h7721 cells were investigated. by means of specific antibodies combined with weste

    Egf刺激后不同轉染細胞中的pkb活性、 p42 / 44mapk和mek磷酸化都明顯增加，其中gntv一s / h7721細胞pkb比活性、 p42 / 44mapk和mek磷酸化程度較mock細胞增加明顯，而gntv一as / h7721細胞中上述指標的增加程度則不及mock細胞。
  3. The key points of the air - condition system designing are : firstly, selecting the control rules. now the more often used control rules are pi, pd, pid. but the question is which one fit air - condition control system most

    空調控制系統的設計關鍵在於：一是選擇控制規律，目前常用的有pi 、 pd 、 pid控制規律，但究竟哪一種控制規律更適合於空調控制
  4. The paper analyses its key circuit and software program structure. this full - digital controller is made up of dsp and implements single neuron adaptive pid computation, current pi computation, logical determination, pulse - fire and procession of protective signal etc. it also improves the reliability and availability of this control system

    本課題對控制器主要的電路結構及程序結構進行了分析，以dsp為核心組成的全數字式控制器完成了電流pi演算法計算，單神經元自適應pid演算法計算、邏輯判斷、脈沖觸發以及系統保護信號的處理等，提高了控制器的可靠性和可操作性。
  5. Studies the work principle and key technology of the boost pfc circuit in theory, designs a small power digital boost pfc converter, this converter works in average current control means and based on tms320lf2407 dsp, adopts current and voltage double closed loop control and pi control arithmetic

    從理論上分析和研究了數字控制boostpfc電路的工作原理和關鍵技術，設計了一款小功率基於tms320lf2407dsp的平均電流控制型的數字控制boostpfc變換器，該變換器應用了電壓、電流雙閉環控制和pi控制演算法。
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