鏈軌的 的英文怎麼說
中文拼音 [liànguǐde]
鏈軌的
英文
trace-mounted-
In section 2. 2, it is proved that if an expansive homeomorphism of a compact metric space have the potp, then it has the potp in its basic sets
2節證明了:對于緊致度量空間上的自同胚,若它有偽軌跟蹤性且是膨脹的,則它在鏈分支上保持偽軌跟蹤性。According to the mean message traversal, the performance of leo / meo mobile satellite communication networks with intersatellite links ( isls ) is analyzed in this paper. three different traffic patterns are used in the analysis. if the isl number per satellite increases, the advantage of packet switch is more significant than that of circuit switch
本文提出了一種基於信息平均傳輸距離的中/低軌衛星移動通信系統星際鏈路網路性能的分析方法.根據三種不同的業務分佈模型對繁/簡兩種網路的信息過網時延和呼叫丟失率進行了分析.通過增加網路中每個節點星際鏈路的數目可以改善網路的性能,而且這種改善對採用分組交換的系統比採用電路交換的系統大Therefore, we should speed up the construction of open - style r & d information center in the yangtze river delta, speed up an intermediary technical service system which consistent with the multinational corporations ; select the enterprises and projects which have relative competitive advantages and development potations in the global multinational corporation industry chain as key domains which first supported, and formulate gradual preferential policies which consistent with the international convention
為此,應加快長三角開放式研發信息中心的建設,加快建設與跨國公司對接的科技中介服務體系;選擇在全球跨國公司產業鏈中具有相對競爭優勢和發展潛力的企業及項目,作為優先支持的重點領域,並制定與國際慣例接軌的階段性優惠政策。Study on intersatellite links in low earth orbit satellite nerworks
低軌道衛星網路中星際鏈路的研究Considering the system ' s wide speed range and ipm ' s switching frequency ' s top limit, the variable flux linkage locus structure control has been executed in the full speed adjusting range
考慮到系統調速范圍寬和逆變器開關頻率的限制,在全頻域採用分段變磁鏈軌跡結構的控制方法。Based on the analysis of designed cad graphics and the given parameters, computer can convert the cad graphics to a acdbpolyline which can simulate the routine of the conveyor chain. then by using the method of point - by - point strain calculation, computer could figure out each point ’ s strain of the chains under different load states, and get the results such as strain ’ s maximal and the minimal values and their positions, weight of the strain equipment and power of the drive electric - machinery that the conveyor need
通過對設計的cad圖形和給定參數的分析,將輸送鏈運行軌跡轉化為一條可模擬輸送鏈軌跡的多義線,然後用逐點張力計演算法動態地計算出各種加載狀態下輸送鏈上各點的受力,得出最大、最小受力點的力的大小和位置,拉緊裝置的重量,驅動電機所需的功率等結果。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。The dissertation deals in details with the basic principle of direct torque control. according to the faults of traditional direct torque control and the requirement of an induction motor ' s control strategy change the method of regulating stator flux to make its path approximate to a circle as possible as could. to get quickly torque control, use a three - value regulator
本論文介紹了電動機直接轉矩控制的基本原理,並根據傳統直接轉矩控制存在的缺點以及對電動機調速性能的要求,改變對定子磁鏈的調節方式,使定子磁鏈軌跡近似為一圓形,對轉矩採用三值調節器進行調節,以實現轉矩的快速調節。The accurate calculation of the input voltage and the compensation for the dc - offset error and the variation of the stator resistance are important factors in practical implementation of the integration since they can cause a drift in the stator flux linkage trajectory and furthermore deteriorate the quality of torque control
因此,輸入電壓的準確計算、直流漂移量的補償以及定子電阻變化的補償都是影響積分計算準確性的重要因素,這些誤差會導致定子磁鏈軌跡的偏移,進而降低系統轉矩控制的性能。In the control software, the object - oriented method is used for doing system analysis and study. furthermore, the message - driven mechanism is used in the control software research and design. the instantaneous zero vector inserting space vector pwm theory is adopted to control the permanent magnet synchronous machine as the driver motor in the control software
軟體採用面向對象的程序設計方法對系統進行分析與研究,將消息驅動機制應用於控制軟體的設計和開發之中,在控制軟體中採用瞬時零矢量插入磁鏈軌跡法(電壓空間矢量法)來控制永磁同步電機。According to the faults of traditional direct torque control and the requirement of an induction motor ' s control strategy, the author changes the method of regulating stator flux to make its path approximate to a circle as possible as could and put forward a new way to use a three - value torque regulator
本論文研究了異步電動機的數學模型,介紹了直接轉矩控制的基本原理,並根據傳統直接轉矩控制存在的缺點以及對電動機調速性能的要求,改變對定子磁鏈的調節方式,使定子磁鏈軌跡近似為一圓形。After the analysis of the state of converter switches, the voltage space vector is received. on the basis of hexagon stator flux trace method of traditional direct torque control, by changing the regulation of stator flux, hexagon and approximate round trace of stator flux can be got when using different voltage space vector. the fast regulation is realized when three - value regulator is used to adjust torque
通過對逆變器開關狀態的分析進而得到電壓空間矢量,並且論述了電壓空間矢量與轉矩和磁鏈之間的關系,使用兩點式調節方法對定子磁鏈進行調節,實現六邊形磁鏈軌跡和圓形軌跡方案,對轉矩採用三值調節器進行調節,以實現轉矩的快速調節。In the synchronous " model, based on the idea of polygonal flux linkage locus, by means of constructing the switch state period table of three phrase voltage inverter is required. in the brushless model, the igbt ( isolated gate bipolar transistor ) switch state period table is gained by gal ( generic array logic ) which analyzes the signal of position feed - back
在同步方式下,基於多邊形磁鏈軌跡法的思想,用作圖法求得三相電壓型逆變器的pwm波形序列;在無刷直流方式下,用gal對位置反饋信號進行邏輯綜合,得到開關管的導通規律。Doors for rail vehicles ; locks for inner hinged doors
有軌車輛的車門.內鉸鏈門的門鎖The system uses the permanent magnet synchronous machine as the driver motor based on the idea of polygonal flux linkage locus and the permanent magnet brush - less motor is as the momentum balance motor by means of speed and current loop in order to track driver motor precisely and rapidly. the harmonious control of driver motor and balance motor is realized by making full use of the dsp hardware resource and complicated programmable logic device. the software design is composed of c and assembly language to realize motor control arithmetic of polygonal flux linkage locus
衛星天線伺服控制系統以正弦波永磁同步電機作為驅動電機,採用多邊形磁鏈軌跡法(電壓空間矢量法)的控制策略;動量平衡電機採用永磁無刷直流電機,通過電流環、速度環達到快速、精確跟蹤驅動電機的目的,確保了衛星姿態恆定;設計方案中充分利用了dsp硬體資源和復雜邏輯陣列實現了驅動電機和平衡電機的協調控制,並通過c語言和匯編語言的混合編程實現了電機的多邊形磁鏈軌跡控制演算法。By designing the negative shift for the sprocket, its trajectory coincides with the theoretical one, and the meshing quality is improved
通過對鏈輪的負變位設計,使運動軌跡與理論軌跡重合,提高了嚙合質量,並對嚙合的重合度作了分析計算,對重合度的選擇提供了依據。First, the structure of the second generation ctdrs isl was discussed in this paper, the characteristic of coverage in the second generation ctdrs by the characteristic of orbit and the simulation model of isl was analyzed then the effect of the isl establishing process analyzed. second, the discussing and analyzing focus on the characteristic of signal during the establishing isl process, establishing the orbit model, the technology of doppler frequency shift capturing and tracking sequence and the effect of background noise, then the theory analyzing the parameters we have just mentioned, and this will support the reference for the implement of project. the simulation and test of the isl of ctdrs and analyzing from theoretical basis to implement of simulation were mainly focused in this paper
其中討論了二代中繼星捕獲跟蹤系統星間鏈路的模擬方案的組成結構,利用軌道特性對二代中繼衛星系統的覆蓋特性進行分析,搭建了星間鏈路的模擬模型,其中包括中繼衛星和用戶衛星在內的軌道模型、星間鏈路模型、用戶星信號調制模型等,並對星間鏈路建立過程的影響進行分析;重點針對星間鏈路建立過程的信號特性,軌道模塊的建立、多普勒頻移技術、背景噪聲影響、載波的捕獲與跟蹤技術等進行了實際參數的設計與理論分析。Such tdrss system can significantly reduce the use of ground - based monitors as well as increasing medium - low orbit coverage, hence enhance the efficiency of the usage of space along medium - low orbit. “ space target capturing and tracking ” ( stct ) is an important technique in data relay satellite system, and is the preliminary requirement to establish the space link. “ performance of analyzing and simulating on tracking receiver in data relay satellite capturing and tracking system ” plays an important role of stct
數據中繼衛星系統是為中、低軌道的航天器與航天器之間、航天器與地面站之間提供數據中繼、連續跟蹤與軌道測控服務的系統,使用數據中繼衛星可以大量減少地面測控站的數量,增大對中、低軌道的覆蓋率,有效的利用中、低軌道資源。 「星間目標捕獲與跟蹤」是數據中繼衛星系統的一項關鍵技術,是建立星間鏈路的首要條件。In many years, automobile industry of our province always is at the low - end position of value chain of the international labor division in joint investment with foreign enterprises, general development profit level is not high, competitiveness in production cost and product price are left behind in the world, so we always obtain processing profit instead of excess profit ; design and production technology of entire cars and component products are left far behind with international advanced level, development of components is severely lagging from the development of the entire cars, especially transnational companies always control procurement of components with high technical content and added value, so we have to import components with key technology
多年來我省汽車產業在與國外企業合資中一直處于國際分工價值鏈的低端位置,總體發展利潤水平不高,生產成本與產品價格遠未達到與國際接軌的競爭實力,我們獲得的一直是加工利潤,而不是超額利潤;整車和零部件產品設計和製造工藝上同國際先進水平尚有較為明顯的差距,零部件的發展嚴重滯後於整車的發展,尤其是跨國公司一直控制著高技術含量、高附加值零部件的采購,使具有核心技術的零部件一直從國外進口。There are three major goals in this research : firstly, basing on the social reality that the economic reform & economic system transition in china, the thesis studies on the relevant problems of economic externalities and gets the economic externality systematic route from producing to realizing which is named as " externality chain "
該研究有三大目標:第一,立足於我國經濟改革、經濟體制轉軌的社會現實,通過對外部性相關問題的研究,得到外部性從產生至轉移乃至最終實現的一個被冠名以「外部性鏈條」的系統路徑。分享友人