asynchronous speed 中文意思是什麼

asynchronous speed 解釋
異步速度
  • asynchronous : adj. 1. 時間不一致的，不同時的。2. 【電學】異步的。
  • speed : n 1 快，迅速。2 速率，速度。3 （汽車的）變速器，排擋。4 （膠片，照相紙）感光速度。5 〈古語〉興隆...
  1. This text summarises several control forms of gushing out oil pump test platform simply, and mainly proposes analog and digital control schemes of close ring adjusting speed, at the same time, gives the principles and implementation methods used in parameters control and measuring, this text introduces the asynchronous electromotor " s control process, in which, fuzzy control arithmetic is used, and the control commands are passed on by means of communication between mcu and frequency converter. there are two parts in this system. one is superior computer that is ordinary pc, the other is hypogynous at89c52. the functions of superior pc are control and display information through screen, and the functions of ats9c52 includes control, collecting, display, treatment, uploading of all parameters

    詳細介紹了應用模糊控制演算法，以變頻器通訊方式進行異步電機調速的控制過程。系統由上位機和下位機兩部分組成。上位機為普通pc機，主要實現系統控制、數據顯示等功能，另外還有數據庫瀏覽、數據列印等功能；下位機以at89c52為核心，負責所有參數的採集、處理、顯示、上傳、控制等。
  2. Ieee 1394 is a high - speed serial bus standard which supports data speed up to 400mbps, hot - pluggable and has two types of data transfer : asynchronous and isochronous. all these characters make it be considered the first choice of near - term on - board spacecraft architectures for data transfer

    而ieee1394高速串列總線具有支持400mbps的等時和異步傳輸，可熱插拔，使用方便靈活等特性，使其成為未來星載高速總線的首選。
  3. Empowered by robust technological strength and sound development platform, we produce cdqc ua series, m2ua series and uabp series three - phase universal frequency conversion variable speed motors, ubpt series three - phase main shaft three - phase frequency conversion variable speed motors, ubps series three - phase main shaft long and thin motors, ubpd series special motors for washing machines, ubpg series three - phase main shaft frequency conversion high speed motors, ut series special motors for oil pumps ， sks ac servo motors, fd series special motors for escalators, ta series three - phase permanent - magnet synchronous motors, lk series three - phase asynchronous motors and tp series three - phase permanent - magnet frequency conversion variable speed motors

    德驅馳憑借其雄厚的技術實力和良好的開發平臺，推出了「德驅馳」牌ua系列、 m2ua系列、 uabp系列三相通用變頻調速電機、 ubpt系列三相主軸變頻調速電機、 ubps系列三相主軸低慣量電機、 ubpd系列水洗機專用電機、 ubpg系列三相電主軸變頻高速電機、 ut系列油泵專用電機、 sks交流伺服電機、 fd系列扶梯專用電機、 ta系列三相永磁同步電機、 lk系列三相異步電動機、 tp系列三相永磁變頻調速電機。
  4. In this paper, a basic principle of ac speed regulating system for a new type asynchronous motor of battery locomotive used in coal mine is introduced, the special requirements of the system are analyzed, and the direct torque control design scheme is proposed

    介紹了一種新型蓄電池式礦用電機車交流異步電動機調速系統的基本原理，分析了這種調速系統的特殊要求，提出了採用直接力矩控制技術實現力矩控制的設計方案。
  5. Discuss about speed adjusting of the relaying pumps asynchronous motor by frequency conversion in the power plant

    電廠中繼泵籠型異步電動機變頻調速探討
  6. The programme logic controller is utilized to control the inverter ' s output frequency which accomplishes controlling the velocity of speed - controlling asynchronous moter. the velocity between main asynchronous moter and speed - controlling asynchronous moter is composed by way of the differential planetary gear train, the tranmission system is made to regulate velocity stepless in large scope which succeed in controlling starting progress of load

    使用可編程式控制制器對變頻器的輸出頻率進行控制，實現對調速電機轉速的控制。調速電機與主電機的轉速經差動行星輪系的速度合成，可使傳動系統在很大范圍內無級調速，實現對負載的可控起動。
  7. Calculation of slot leakage reactance for 3 - phase pole changing double winding adjustable - speed asynchronous motor

    雙繞組變極調速三相異步電動機槽漏抗的計算
  8. Hardware design uses high - speed digital signal processor tms320lf2407a as the key control part. software design adopts hexagon stator flux scheme and round stator flux scheme respectively. after the system is set up, the direct torque control method is realized for a 0. 12kw winding asynchronous motor

    最後根據以上的討論和實際應用中的情況，分別採用六邊形磁鏈方案和圓形磁鏈方案，以高速數字信號處理器ths320lf2407a作為核心控制部件，在一臺0 . 12kw的繞線式異步電機上實現了異步電機直接轉矩控制。
  9. Taking core loss into account has important effect to improve the torque performance of the motors " field oriented control. in this paper, the transient mathematical model of the asynchronous motor with core loss is setup. the method is proposed that minimizes the loss in a variable speed and torque at the synchronous rotating coordinate

    在對損耗分析的基礎上，建立了考慮鐵損時異步電機的動態數學模型，推導出在同步旋轉坐標系下變速、變轉矩時使電機功率損耗最小的方法，並且結合矢量變換提出了基於快速轉子磁場定向的矢量控制。
  10. In this thesis the author made a study of asynchronous motor model, designed a hybrid simulation system of dtc and analyzed the characteristics of the dtc system and the existing problems detailedly. due to the large torque ripple of induction motor in dtc system, especially in low speed, this thesis proposed a discrete time space vector modulation and designed a sliding - mode torque and flux controllers based on sliding - mode theory to overcome this drawback

    由於直接轉矩控制存在的不足之處主要在於轉矩脈動，特別是在低速運行時這種情況更加突出，針對該問題，本文提出了一種離散時間空間矢量合成法來改善轉矩脈動，並且引入滑模理論，設計了一種滑模轉矩和磁鏈控制器來克服這一缺點。
  11. Common data interfaces used in radio include rs - 232, etc. as the rapid growth of data speed in data radio, asynchronous serial port does not meet the need of data transmission of high - speed data radio. data radio is gradually using ethernet interface as high - speed data radio ’ s data interface, to function as a high - speed data channel between host computer and data radio. this paper brings forward a universal radio interface protocol model, whose core is taking ethernet as a high speed data channel in network protocol stack

    本文針對電臺的以太網介面，經過對各種電臺的功能分析，提出了一種通用的在以太網通信中適用的報文介面協議模型，其核心思想是將以太網作為網路協議棧中內部的高速數據傳輸通道來使用，作為鏈路層和物理層之間的內部介面，同時提供電臺控制和數據傳輸兩大功能模塊。
  12. In the field of electric driving, the adjustable speed control of ac asynchronous motor by inverter was a hot spot because of its energy saving function

    由於異步電機交流變頻調速有著明顯的節能功效，以及可以實現連續調速等諸多優點，已成為電氣傳動領域的研究熱點之一。
  13. The asynchronous motor is widely used for its simple construction, ruggedness, high working reliability, relatively low cost, and high environmental adaptability. it is suit for the direction of high voltage, high speed and large capacity. vector control is its ideal speed modulation method. the harmonics of three - level inverter are less than the traditional two - level inverter ’ s, and it is convenient to realize high sinusoidal voltage output. the maximum voltage strength which each electric component bears is small, and it is easy for three - level inverter to realize large capacity. the research on the asynchronous motor vector control based on the three - level inverter is one novel work

    異步電機結構簡單、堅固耐用、運行可靠、成本低、環境適應性強，容易向高壓高速和大容量方向發展，獲得了廣泛應用，矢量控制為其理想的調速方法;三電平逆變器輸出端諧波少，有利於實現輸出電壓的正弦化，且單個開關管承受的最大電壓小，適合向高壓大容量方向發展。對基於三電平逆變器的異步電機調速系統開展矢量控制研究，是一件有意義的工作。
  14. Firstly, this paper introduces the asynchronous motor model, and compares it with the dc motor ’ s. then the paper studies the principle of vector control, and proposes an improved current model of rotor flux observer. this paper also studies the three - level inverter ’ s topology, working principle, the neutral - potential unbalance mechanism and its controlling strategy. the paper especially studies the svpwm in details. the interface between the vector control and the three - level inverter is studied in details, including the generation of reference voltage vector, its judging of the sector and triangular regions, and the working mechanism after it sent into three - level inverter. when synthesizing the reference voltage vector, select the vector which only includes p and o states as the starting vector, thus eliminate the vector shift problem when sector changes. this paper fully takes advantages of the powerful functions of matlab / simulink to set up the simulation model. this construction is very explicit. the simulation results verify the inverter voltage output is correct, the rotor flux is steady, the asynchronous motor ’ s dynamic and steady state performances and speed modulation are excellent

    本文首先介紹了異步電機的數學模型，在此基礎上將異步電機的數學模型與直流電機的數學模型進行了比較;然後介紹了矢量控制的基本原理，採用了一種改進的轉子磁鏈電流型觀測模型;對三電平逆變器的電路拓撲、工作原理、中點電位不平衡的機理及控制方法進行了介紹，詳細分析了空間矢量脈寬調制策略。本文對異步電機的矢量控制與三電平逆變器之間的介面進行了詳細的研究，包括:參考電壓矢量的形成、所落扇區與具體小三角形區域的判斷、送入逆變器之後的工作機理。在參考電壓矢量的合成時，選擇只包含p 、 o狀態的空間電壓矢量作為起始矢量，解決了扇區切換時的矢量突變問題。
  15. According to the safety requirements of underground electrical equipment, an excellent intrinsically safe pilot circuit is designed, the fault characteristics and protection principle of asynchronous motor with single speed and double speed used in underground are simultaneously analyzed, the function parameters corresponding to the fault protections for high capacity motors are determined. at the same time, module program design method and compiled monitoring program and function subprograms are emphatically described

    根據礦井生產安全要求，設計了性能優良的本質安全型先導電路，分析了單速異步電動機和雙速異步電動機的各種故障特徵和保護原理，確立了每種故障保護的動作指標，介紹了結構化程序的設計方法，設計了監控程序及各功能模塊程序。
  16. Abstract : a new kind of variable frequency speed - governing experiment system which has the structure of two parallel inverters at dc bus and output of inverter driving two series asynchronous motors at the same shaft is presented in this paper

    文摘:提出了一種雙逆變器直流母線並聯、變頻輸出驅動同軸串聯的兩臺異步電動機結構的新型變頻調速實驗系統。
  17. The power circuit of the system adopts the voltage frequency conversion structure of ac - dc - ac, and is composed of the commutation circuit, filter circuit and intelligence power module ( pm15rsh120 ). control circuit takes the dsp chip tms320lf2407 as core, including the pwm signal occurrence circuit, detect circuit of stator current and direct current voltage of generatrix, drive circuit of intelligence power module, detect circuit of speed, protect circuit of system etc. all of this builds the full digital vector control system of asynchronous motor

    該系統的功率電路採用電壓型的交-直-交變壓變頻結構，由整流電路、濾波電路及智能功率模塊ipm （ pm15rsh120 ）逆變電路構成;控制電路以dsp晶元tms320lf2407為核心，加上pwm信號發生電路、定子電流檢測電路、直流母線電壓檢測電路、智能功率模塊驅動電路、速度檢測電路、系統保護電路等，構成了功能齊全的異步電機全數字化矢量控制系統。
  18. In addition, according to the safety requirements of underground electrical equipment, the fault characteristics and protection principle of asynchronous motors with single speed or double speed used in underground are simultaneously analyzed, the function parameters corresponding to the fault protection for high capacity motors are determined. at the same time, module program design method and compiled monitoring program and function subprogram are emphatically described. especially, more attention is paid to the design philosophy, operation principle, hardware block diagram and software flow chart of mcs

    根據礦井生產要求，分析了異步電動機的各種故障特徵和保護原理，確立了每種故障保護的動作指標；設計了主控制板的硬體電路；根據結構化程序的設計方法，設計了監控程序和各功能模塊程序；並且分析了工業生產環境存在的干擾源及所產生干擾信號的特徵，針對不同特徵的干擾信號，制定了相應的硬體、軟體抗干擾措施。
  19. Since 1996, six international global telemedicine conferences have been held by the university, the largest of all being the " moving with the sun 97 " conference which was the first 24 - hour telemedicine conference linking up 19 medical centres across the world. telemedicine links medical experts in different parts of the world together by using high speed multimedia network such as asynchronous transfer mode ( atm ), very small aperture terminal ( vsat ) and virtual private network ( vpn ) as communication media in conjunction with compressed video conference technology

    遠程醫療是醫療技術與高科技相結合的典範，以高速多媒體電信網如異步傳輸模式（ atm ） 、高速衛星專線（ vsat ）及組建虛擬專用網（ vpn ）作為通訊渠道，並配合先進視像壓縮技術與世界聯網，使身處不同地方的醫學專家可以面對面進行各種醫療活動，打破時間和空間的限制，為救死扶傷開創了另一新途徑。
  20. Fir st, dependable data are acquired through experiment of three - phase ( variable fre quency variable speed ) asynchronous electrical machine for secific inverter fed

    首先，對特定逆變電源供電的三相（變頻調速）異步電動機進行實驗，取得可靠實驗數據。
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