for-loop variable 中文意思是什麼
for-loop variable
解釋
循環變量-
The study has completed the design of two - phase inverter and made up of the two - phase inverter - motor system for experimental use it is a variable frequency adjustable speed system with a open - loop control of rotational speed, which consists of voltage - controlled oscillator circulating assign device inverter circuit and two - phase induction motor a accurate mathematical model is set based on the whole system, and simulator program of dynamic and steady condition is established, which is used to calculate the dynamic and steady performance by kron and symmetrical coordinate converter by simulator calculation and experimental research with specific parameter of the system, a comparison is made between predicted and experimental characteristics, experimental measurements are shown to compare closely with corresponding theoretical result it is compared with some variable frequency adjus table speed system comprising inverter and single - phase induction motor from the system efficiency torque pulsation and the effect of two - phase inverter capacitance based on the conclusion, harmonic cancellation pulse width modulation control of a two - phase inverter - fed induction - motor drive system is researched, which cancelled the low harmonic and improve the system performance
通過對電機的kron變換和對稱分量變換，建立了系統較精確的數學模型，編制了系統動態及穩態運行的模擬計算程序分別計算系統的動態和穩態性能。通過對系統的具體參數進行了模擬運算和實驗研究，實驗和模擬結果進行比較，說明實驗和理論較為一致，並從系統效率、轉矩脈動及兩相逆變器電容的影響等方面與各種逆變器和單相異步電動機組成的變頻調速系統加以比較。在此基礎上，對兩相逆變器供電-異步電動機系統使用諧波抑制pwm控制進行了研究，由於減少了低次諧波，改善了系統性能。 -
The control variable for the loop
它是循環的控制變量。 -
Covers choosing the most efficient data type for the control variable of a loop
介紹如何為循環的控制變量選擇最有效的數據類型。 -
Presents the system established by taking variable - speed torque converter with adjustable guide blades as a pilot control unit and forming an open or closed loop feedback control system, and its outstanding advantages, such as high capacity, simplicity, reliability and good transmission efficiency owned by hydrodynamic drive, and the dynamic model developed for variable - speed torque converter with adjustable guide blades by means of theoretical analysis and regression analysis of experimental data, and concluds that the model is sophisticated and simple enough to be used as a tool for design, analysis and computer simulation of a hydrodynamic control system
以導葉可調式液力變矩器作為控制單元組成的開環或閉環液力控制系統，具有液力傳動裝置能容大、系統簡單可靠、傳動效率較高等顯著的優點.通過理論分析和試驗數據的回歸分析方法建立了導葉可調式液力變矩器的數學模型，模型既簡單，又有足夠的工程應用精度，為液力控制系統的設計、動態分析和性能預測提供了必要的理論基礎 -
For example, if the foreach loop includes an execute sql task that runs a query and stores the result in a variable, you can use the foreach from variable enumerator to enumerate the query results
例如，如果foreach循環包括運行查詢並在變量中存儲結果的執行sql任務，則可以使用foreach源變量枚舉器枚舉查詢結果。 -
For example, a compiler may choose to optimize a loop index variable by storing it in a register, or the cache may delay flushing a new value of a variable to main memory until a more opportune time
例如，編譯器為了優化一個循環索引變量，可能會選擇把它存儲到一個寄存器中，或者緩存會延遲到一個更適合的時間，才把一個新的變量值存入主存。 -
So it should be chose appropriate controller for the outer speed loop to fulfil the different variable - speed system
作者認為應該靈活選擇適合的轉速環調節器來滿足不同層次的性能要求的調速系統。 -
A comparative study and simulation of different control schemes, for the brushless motor variable - speed system, is presented. the simulation results show that, with the outer speed loop based on conventional proportional - integral controller, the dynamic performance of the system is not content, while with intelligence controller, the performance improves, and with variable - structure control with sliding mode, the system response influenced slightly by the vary of the system parameters
本文還對無換向器電動機雙閉環調速系統的不同控制方式進行了模擬比較，結果表明：採用常規的pi轉速調節器，系統的動態性能不是很好；採用簡單的轉速環智能控制器，系統的動態性能能得到一定改善；採用轉速環滑模變結構控制器，系統的響應特性受系統參數變化的影響較小，具有優異的動態性能。 -
Closed - loop variable structure control method for seismically excited building structures
建築結構抗震控制的閉環趨近律方法 -
This paper study a two - phase inverter - fed induction - motor drive, which can be widely used for low - power, variable speed drive system. the study has completer the design of two - phase inverter and made up of the two - phase inverter - motor system for experimental use. it is a variable frequency adjustable speed system with a open - loop control of rotational speed, which consists of singlechip controller, power drive device, inverter - fed device, a low power tow phase induction motor and safeguard circuit
本文研究了一種新型電壓空間矢量控制兩相逆變器?異步電動機的變頻調速系統，該系統可以廣泛應用於小功率、寬調速運行的場合。本項研究完成兩相逆變器的設計，並組成了試驗用的兩相逆變器?異步電動機系統。系統是一個轉速開環的變頻調速系統，由單片機機控制電路、功率驅動電路、逆變器主電路、保護電路組成。 -
In this paper generic model control is applied to the design of controlling law of the nonlinear power propulsion system, at the work state of constant depth and variable speed, constant speed and variable depth movement of torpedo. then the simulation program of the torpedo thermal power digital simulation system comes forth which can be used for the dynamic simulation of the performance of the process of open - loop constant depth and open - loop constant speed, the process of close - loop constant depth and close - loop constant speed
本文採用一般模型控制的基本原理，對非線性動力推進系統進行控制律的綜合，設計了魚雷恆深變速、恆速變深控制的閉環控制規律，開發了魚雷熱動力系統數字模擬軟體，對魚雷熱動力推進系統的典型工況：開環恆深、開環恆速以及閉環恆深、閉環恆速進行動態模擬。 -
Aiming at the features of grid - connected pv system, a kind of grid - connected control strategy is presented, which is based on the multi - variable double - loop control and synchronization phase - locked control. the multi - variable double - loop control is used for the real - time tracking, and the inherent principle error existing in the single - loop control is eliminated. the synchronization phase - locked control makes the frequency and phase of output current equal to those of utility voltage
針對光伏並網的特點，本文提出了一種基於多變量雙環控制與同步鎖相控制的並網控制策略，多變量雙環控制用於電流的實時跟蹤，解決了只採用單環控制存在的原理性誤差問題；同步鎖相控制則保證輸出電流與電網電壓同頻和同相。 -
The design of the scheme is mainly in consideration of good adaptability for variable transmission systems. chapter 3 introduces the digital phase - locked - loop used in the modulator scheme
方案設計的重點在於方案的靈活性，使之能夠對不同的傳輸體制具有盡量好的適應性和可移植性。 -
The standard is designed to give a new technical solution for a broad range of applications, such as very low bit rate conversational services and entertainment quality broadcast, interactive video - on - demand services etc. for the enhancement of the coding efficiencies, the new standard adopts new tools as following : multiple reference pictures, variable block - size with seven block sizes in motion prediction, quarter - pixel accuracy for motion vector, short word - length integer transform, context - adaptive entropy coding and loop filter deblocking
H . 264 / avc標準支持從低帶寬、高誤碼率的無線移動視頻通信到高帶寬、低誤碼率的有線視頻廣播等多種應用，因此，日益受到業界的關注。為了實現更高的編碼效率， h . 264 / avc標準採用了很多新的編碼技術，如多參考幀預測、多尺寸編碼塊模式、 1 / 4像素精度運動矢量、整數變換量化、基於內容的熵編碼、新型幀內預測、去除方塊效應的濾波器等。 -
The design had friend human - computer interfaces to monitor the field situation, realized the high precision temperature control with the pid - fuzzy control method, realized the high precision control for motor combining plc with closed - loop control and tension - monitor on - line of variable frequency drives, avoid the hard border and overlapping yarn by four grades stroke modification and changing winding angle incessantly
利用友好的人機交互界面，實現強大的監控管理功能；利用pid模糊控制實現熱箱溫度的精確控制；採用plc結合變頻器閉環控制和在線張力監測實現電機的高精度控制；通過四級動程修正和持續改變卷繞角，防止硬邊和疊絲。 -
Loop simplifies this process a little by using an implicit variable that is, one that isn t explicitly created for the
對象的隱式變量（也就是說，變量不是顯式創建的） ，對這個過程稍做了點兒簡化。 -
You specify the loop control variable, but you do not have to determine starting or ending values for it
您指定循環控制變量，但不必確定它的起始值或終止值。 -
Once and assigning the results to an integer variable for use within the loop
，然後將結果分配給整數變量以便在循環中使用。 -
Listing 1 shows the for - each loop for iterating over an array and a collection ; in each case, the loop variable test condition and update expression is generated by the compiler, as if the programmer had coded it the usual way
清單1顯示了基於數組和集合的迭代的for - each循環；任何一種情況下，循環變量測試條件和更新表達式由編譯器生成，就好像編程人員把它編碼成通常的方法一樣。
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