space switching 中文意思是什麼
space switching
解釋
空分交換-
Orbit non - friction ball valve is a new type of valve and realizes non - friction switching and metal pressurization of the valve by cam mechanism. this paper researches the design of orbit non - friction ball valve mechanism and its computer aided design. the main work and the result are as follows : the author puts forward the kinetic analysis method of orbit non - friction ball valve, analyses the track and motion space of the conglobulation for switching etc, and brings forward rule of its configuration design, designs its assembling body and all the part
本論文對軌道式無摩擦球閥機構設計及計算機輔助設計系統進行了研究，取得了以下幾方面的成果：提出了軌道式無摩擦球閥的運動和動力分析方法，完成了球閥啟閉運動軌跡、球體運動空間以及主要零部件的受力等分析，進一步提出了球閥結構設計的準則，完成了球閥裝配件及所有零部件圖的設計。 -
Because the switching speed of magnetologic gates is fast, switching at billions of cycles per second ( gigahertz ), this chameleon of processors can alter its functionality many times within the space of even one second
由於磁邏輯閘的開關速度很快，每秒達幾十億次，所以這種變色龍般的處理器，在短至一秒之內就能多次變換功能。 -
What is more, these cables run from the switching room to the transmission room, occupying a great deal of channel space between stories, which is even more precious than machine room space. to solve this problem, 2. 5g transmission equipment has to be used as bridge cable between stories
同時電纜要從交換機房布放到傳輸機房，需佔用大量樓層間的通道，通道的資源對我們來說比機房的面積還要寶貴，已經有很多機房樓出現這樣的問題，由於通道資源不足，只好用昂貴的2 -
Security, too, is a key issue for switching the traditional private nforork to vpn. security of mpls wn architectur is analyzed thorouguy in this thesis, including septheion of address space and route, hiding of the mpls core smicture, resistance of attacks, impossibi1ity of 1abe1 spoofing
安全性是虛擬專用網能否取代傳統專用網的關鍵，本文對mplsvpn體系結構的安全性進行了深入分析，包括地址空間和路由的隔離、隱藏mpls核心結構、抵抗攻擊、抵抗標記欺騙等，從而得出mplsvpn與atm framerelay具有相同安全級別的結論。 -
By analyzing the basic principle of voltage space vector pwm, a method is proposed to choose the zero vectors dynamically according to the power factor angle of the load and the concept of the lag angle of non - switching sectors
在分析了空間矢量pwm基本原理的基礎上，提出了一種根據負荷功率因數角動態分配零矢量的方法，並引入了不開關扇區滯后角的概念。 -
Based on the theory creation of space voltage vector ' s polygonal flux linkage locus, freewill partition of the ideal flux circle is realized by the software method. furthermore, different polygonal flux linkage locus ' s fluent switching point is also found, which overcomes the motor " switching failure and improves the speed adjusting dynamic performance
在充分研究磁通軌跡法原理的基礎上，採用軟體方法實現了任意多邊形磁鏈軌跡的生成；並找出了不同磁鏈軌跡間的平滑切換點，解決了切換時的電動機失步問題，提高了系統轉速調節的動態性能。 -
Due to the complexity of the structure and control of cycloconverter - type three - phase hf link inverter for soft - switching based on phase - shift - controlled full - bridge mode, a simple and optimized vvvf control strategy is proposed. this control strategy includes : produced pwm by space voltage vector ( svm ) and equivalent carrier frequency fe = 1 / te are introduced into the pdm control of the cycloconverter ; softened equivalent pwm wave is generated at the notches of hf voltage pulses ; the harmonious control between regulating pulse width by phase - shifted angle and regulating voltage of equivalent pwm is to minimize the harmonics content of output voltage of the inverter
西安理工大學博士學位論文針對這種前級移相全橋軟開關周波變流型三相高頻鏈逆變器結構和控制的復雜性，提出了一種實現簡單而整體優化的vvvf控制策略:將空間電壓矢量產生p姍的方法svm和等效載波頻率fe = 1 / te引入到周波變流器的pdm控制;按高頻電壓脈沖前後沿軟化等效p翎波;用移相調節高頻脈沖寬度和等效p姍調壓協調控制逆變器輸出電壓，在滿足輸出電壓條件下使諧波最小。 -
Based on the investigation with several voltage control methods, such as venturini method, instantaneous double - voltage synthesis method and space vector modulation method ( svm ), three new control strategies are put forward. firstly, a time - varying modulation coefficient svm method is proposed to improve mc ' s anti - disturbance performance under the asymmetry input voltage. secondly, a 5 - state switching strategy is presented for mc controlled by the svm method, which reduces the commutation number and switching losses remarkably
在分析了venturini控製法、瞬時雙電壓法、空間矢量法等電壓控制方法的基礎上，提出了在非對稱輸入條件下矩陣變換器空間矢量法的時變調制比改進控制策略，提高了變換器的抗干擾性能；對空間矢量法的開關策略進行了研究，提出了新型5狀態開關策略，在保證其他性能不受影響的條件下，減少了變換器的換流次數和開關損耗；提出了一種矩陣變換器單電壓合成的新方法，它不僅使得變換器的控制簡單，計算量減少，而且使得開關損耗達到最少。 -
The intra - lingual translation is not a simple code - switching process, but a continuous interpretation of the source text in the same context, under the condition of a certain different space and time
摘要語內翻譯不是簡單的同一語言內部的語碼轉換過程，而是在同一語境內部，在保持一定時空距離的條件下，譯者對原作做出的新的解釋，並且是在對傳統繼承基礎上的新的發展。 -
The theoretical analysis and result of simulation indicate that the two - phase modulation reduces the switching losses 50 % relative to the quasi - optimum and the space vector modulation and overmodulation can generate higher voltages with low total harmonic distortion
分析表明二相調制方法相對于準優化方法減少開關損耗近30 ，空間矢量的調制與過調制可以大大的提高直流母線電壓的利用率。 -
The high switching frequency allows the use of small surface - mount capacitors, saving board space and reducing cost
高的開關頻率允許選用小的表面陶瓷電容，可節省板級面積、降低成本和減小輸出電壓紋波。 -
People can easily design the hysteresis current control hardware circuit, but the switching frequency is variable which makes us difficult the design the output filter, moreover the output waveform is not good. the space vector modulation techniques, by selecting the zero vector properly, it can reduce the harmonic content of the output voltage, so it has become a popular control method
滯環電流控制的硬體電路設計簡單，但存在開關頻率不固定，輸出濾波器設計困難，輸出波形質量差，空間矢量控制（ svm ）技術具有較高的電壓利用率，且通過對零矢量的合理控制可以降低諧波含量或降低開關損耗，因此是一種較好的控制方法。 -
The twelve kinds of modes and equivalent circuits within one high frequency switching period are carefully analyses. by using the state - space averaging approach, the converter ' s averaging model is presented, the output characteristic curve and design criterion of key circuit parameters such as output voltage, filtering inductance, common conduction time, uni - polarity spwm waveform ' s duty cycle etc are given
詳細分析了這類變換器在一個高頻開關周期內的十二個工作模式及其等效電路。採用狀態空間平均法建立了變換器平均模型，獲得了輸出電壓、濾波電感電流、共同導通時間、單極性spwm波占空比等關鍵電路參數的設計準則和變換器的外特性曲線。 -
Since each of the conductors in a data cable travels through the same physical space, it is reasonable to expect transients caused by environmental or current switching to be “ common mode ” that is, present on all data and ground conductors within the data cable
因數據電纜中的每個導體所通過的物理空間是一樣的，期望由於環境或電源通斷引起的瞬態電壓同時出現在數據電纜里的所有的數據線和地線，成為「共模」電壓是合理的。 -
In this paper, the intelligent non - central - switching explosion - proof amplifying call and telephone talk system which is suitable for the inflammable and explosive, large - scaled and strong - noised working space is developed by recurring to the techniques of the computer, the electronics and the communication
本文採用計算機技術、電子技術和通信技術研製了適合於易燃、易爆、大范圍、強噪聲的生產場所使用的智能型無主機防爆擴音對講電話系統。 -
Based on the intelligent non - central - switching amplifying call and telephone talk system, the ky - 2 - type non - central - switching factory communication telephone system is developed in this paper. the system is suitable for the large - scaled and strong - noised working space, is developed by using the techniques of the computer, the electronics and the communication
本文在原有智能型無主機擴音對講電話系統的基礎上，研製了符合大范圍、強噪聲的生產場所通信要求的ky - 2型無主機工廠通信系統。 -
Time - space - time switching network tst
時間交換網路 -
Introduction : basic operation : switching props : t key decisions : the space bar run : shift jump key : ctrl big jump : bond ctr key shift key skills : in no time jumping at the same time ctr key shift key is pressed ahead shift, bond then by ctr bond
當活力成為年輕的代號，運動便是揮灑青春的最好途徑之一，滑板少年，將使你魅力四射操作指南：在開始進入軌道按住空格鍵，到斑馬線指定區放開空格鍵，使用鍵盤上的四個方向鍵做出不同的超炫動作得分。 -
In order to solve the problem of direct torque control ( dtc ) for permanent magnet synchronous motor ( pmsm ) related to the flux and the torque ripple and the uncertainty of switching frequency, a method which shorten the voltage - vector - function - time by svm ( space vector modulation ) is developed, and in order to improve the system performance, the stator flux linkage sectors and vectors are subdivided
摘要為了解決永磁同步電機傳統直接轉矩控制低速時磁鏈和轉矩脈動大的問題，提出了1種用空間矢量調制（ svm ）實現減小電壓矢量在1個控制周期中的作用時間的直接轉矩控制方法;為進一步提高系統性能，對磁鏈扇區和電壓矢量進行了細分。 -
The twelve kinds of modes and equivalent circuits of this inverter with high frequency link within one high frequency switching period are carefully analyzed ; by using the state - space averaging approach, the inverter ’ s averaging model is presented, and the design criterion of key circuit parameters and the output characteristic curve are given ; the analyses of the system stabilization and the mathematic analyzes of the principle of high - frequency - link of this inverter have also be done. prototypes for 1kva 270v 10 % dc / 115v400hzac uni - polarity phase shifting controlled bi - directional voltage mode inverter with high frequency link is designed
以全橋橋式拓撲為例，論述了雙向電壓源型高頻環節逆變器單極性移相控制的原理、逆變器在一個高頻開關周期內的十二個工作模式及其等效電路;採用狀態空間平均法建立了逆變器平均模型，獲得了這類逆變器的關鍵電路參數的設計準則和外特性曲線;分析了系統穩定性，並對逆變器高頻環節原理進行了數學分析。
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