synchronous frequency 中文意思是什麼

synchronous frequency 解釋
同步頻率
  • synchronous : adj. 同時的，同期的；【物理學】同步的。adv. -ly
  • frequency : n. 1. 屢次，頻仍，頻繁。2. （脈搏等的）次數，出現率；頻度；【物理學】頻率，周率。
  1. If the numerical value line resonance frequency plus some shaft connatural frequency of generator is equal to operation frequency, it brings about coupling resonance between generator and system, which maybe results in shaft rupture of synchronous generators

    當線路電氣諧振頻率與同步電機的軸系某一固有振蕩頻率近似互補于電網工頻時，將導致機電系統的耦合振蕩，嚴重的會造成同步發電機大軸的扭斷。
  2. Variable voltage and variable frequency ( vvvf ) inverter control technology applied by ford passenger lift extends the utilization from the elevators drive system to the door machine system, plus its matching none link lever synchronous belt type door machine structure, it results in the more smooth sensitive and secure door open and shut. the passengers feel the doubled warmth in entering into and exiting the elevators

    福德乘客電梯所應用的變壓變頻（ vvvf ）逆變器控制技術，從電梯驅動系統延伸運用到了門機系統中，加上與之相匹配的無連桿同步帶式門機結構，使電梯門的開啟和關閉更加平穩、靈敏和安全，令進出電梯的乘客倍感親切。
  3. It can serve for synchronous spinning reserve, load following, frequency control and synchronous condenser operation. due to the difficulty of quantitative calculation, the typical cases on dynamic function of pumped storage plant are qualitatively analyzed in this paper

    抽水蓄能電站具有運行靈活、啟動迅速的特點，其在電力系統的動」態效益主要表現在緊急事故備用、負荷跟蹤、調頻和同步調相上。
  4. Static benefits are generated from peaking and valley - filling, which are further divided into capacity benefits and coal saving benefits. dynamic benefits come from its fast starting and flexible operation, including frequency regulation, synchronous condenser operation, fast coverage of steep load gradient and synchronous spinning reserve. as for the calculation of static benefits of pumped storage plant, the alternative coefficient method is normally adopted at present

    目前在抽水蓄能電站的靜態效益計算中，一般採用替代系數法，即用抽水蓄能電站的裝機容量乘以容量替代系數（ 1 . 05 1 . 1 ）計算抽水蓄能電站的替代容量；用抽水蓄能電站的發電量乘以電量替代系數（ 1 . 05 ）計算替代電站的發電量，再根據循環效率的大小計算抽水蓄能電站的燃料消耗。
  5. The scrambling and descrambling technologies include non - disturbing frequency method, analog base band disturbing method, the radio - frequency signal disturbing method, the digital disturbing method for the analog signal and the digital signal disturbing method, etc. after the introduction a project based on the compression of the rf synchronous information is formulated

    本文綜述了目前常用的幾種主要的電視信號的加解擾技術，如非擾頻加解擾技術、模擬基帶加解擾技術、射頻信號加解擾技術、模擬信號的數字處理加解擾技術以及數字信號加解擾技術等。
  6. Because massive harmonic interference in the electrical network, it causes signal - sampling to include the very big harmonic in the measurement system, for eliminating measurement result influence by harmonic, the paper has an in - depth study of fourier transformation harmonics analysis measurement principle, analysis the forming reasons of frequency spectrum leakage and railing effect during measurement, achieves phase locked loop and frequency multiplier technique to realize integer - period synchronous sampling and eliminate impact of frequency spectrum leakage and railing effect in the result of measurement, and investigates in depth theory on phase locked loop and frequency multiplier technique, gives the method of realizing phase locked loop and frequency multiplier technique

    由於電網中存在大量的諧波干擾，導致測量系統中取樣信號也含有很大的諧波，為了消除諧波對測量結果的影響，論文深入研究了傅立葉變換諧波分析法的測量原理，分析了測量中頻譜泄漏和柵欄效應形成的原因，提出了採用鎖相環倍頻技術實現信號的整周期同步采樣，消除頻譜泄漏和柵欄效應對測量結果的影響，並對鎖相環倍頻技術的理論進行了深入研究，給出鎖相環倍頻技術的實現方法。
  7. Based on vibration principle, the paper establishes dynamics analysis model of output shaft with elastic support, according to fourer series spread principle of periodic function, the dynamic response formula is derived by separating complex vibration force into sum of many simple harmonic excitation function of whole number times frequency relations. the result shows that response of both sides support is synchronous when load distribution non - uniform coefficient is 1

    依據振動理論建立了具有彈性支撐的輸出軸的動力學分析模型，根據周期函數的傅里葉級數展開原理，將復雜的激振力分解成為多個頻率成整倍數關系的簡諧激勵函數，導出了動態響應表達式，結果表明，當載荷分配不均勻系數為1 . 0時的輸出軸兩端支撐同步。
  8. 1driving form : speed - regulate of frequency converter + universal shaft coupling + synchronous belt with high accuracy in synchronism, high in mechanism and guarantee in lifetime of the components

    傳動型式：變頻器調速+萬向聯軸器+同步帶，同步精度高，機械效率高，構件使用壽命保證。
  9. 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。
  10. Through the deep study of f. d. demello dynamic model of electromechanical transition and synchronous generator theory, we proposed a new control strategy of excitation device that can eliminate the negative - damping phenomenon, which is directly against the cause of producing negative - damping represented as low frequency oscillation in the system

    通過深入研究f . d . demello機電暫態的動力學模型以及同步發電機理論，針對系統產生負阻尼即低頻振蕩的原因，我們提出了一種新的可消除負阻尼現象的勵磁控制策略。
  11. The machine is composed of an automatic roll - releasing device, connecting platform, an automatic margin - cutting mechanism, an automatic tube forming device, a high frequency welding mechanism, the vertical and horizontal traction devices, an automatic synchronous revolving cutting mechanism and a computer control system

    本機組主要包括：自動放卷裝置，對接平臺，自動切邊機構，自動成型裝置，高頻焊接機構，垂直、水平牽引機構，自動控制跟蹤旋切裝置及人機界面控制系統。
  12. The stator of aceg is connected to the grid and the three symmetrical excitation windings in the rotor are fed by converter. the magnitude and frequency and phase and phase sequence of excitation voltage can be controlled, so the magnitude and position of excitation mmf as well as the speed of rotor can be controlled. therefore, acegs have superior performances by contrast with conventional synchronous generators and induction generators, such as upstanding stability, power generation of variable speed constant frequency ( vscf ), adjusting active power and reactive power independently, and absorbing lag reactive power deeply

    交流勵磁發電機的基本結構與繞線式異步電機相同，其定子側接電網，轉子上採用三相對稱分佈的勵磁繞組，由變頻器提供對稱交流電勵磁，且勵磁電壓的幅值大小、頻率、相位、相序都可根據要求加以控制，從而可以控制發電機勵磁磁場大小、相對于轉子的位置和電機的轉速，使得交流勵磁發電機具有良好的穩定性及轉速適應能力、獨立的有功與無功調節能力和較強的進相運行能力，性能超越傳統同步發電機和感應發電機，因而有著廣闊的應用前景。
  13. The topologies family include single four - quadrant power switch mode, push - pull mode, half - bridge mode, and full - bridge mode circuits. taking full - bridge mode circuit as an example, the operational mode, steady principles, transient voltage feedback control strategy of the converter are investigated. the output characteristic curve, the design for the key circuit parameters and the reference sinusoidal circuit which is synchronous with the signal of n or 1 / n times line voltage frequency are given

    該電路拓撲族包括單四象限功率開關式、推挽式、半橋式、全橋式電路，以全橋式電路為例分析研究了這類換器工作模式、穩態原理與電壓瞬時值反饋控制策略，給出了變換器的外特性曲線、關鍵電路參數、與電網電壓n倍頻或n分頻信號同步的基準正弦電路的設計。
  14. For keeping the frequency and phase synchronous to the grid, a pll ( phase locked loop ) is necessary

    為了使並網電流和電網電壓同頻、同相，需要使用鎖相環技術。
  15. Simulations with respect to two models, prove that the method can track the frequency accurately and instantly, and have the preferable effectiveness on the abruptly fluctuating - frequency power signals, at the same time, this method overcomes the constraint of synchronous sampling and has the better astringency with different initial frequency

    針對兩種模型進行模擬，表明該方法能夠較為精確與快速地跟蹤電網頻率，尤其針對突變頻率的信號，具有較好的跟蹤效果；同時演算法克服了同步采樣條件的限制，通過迭代，在不同初始頻率下均具有較好的收斂性。
  16. In the synchronous techniques based pilot symbols, here propose a frequency offset estimating arithmetic using discrete pilot symbols. we pick up integer times sub - carrier frequency offset from the same ofdm symbol and estimate exact

    此外，在頻偏估計方面，推導出短訓練序列前後兩段時域符號間的關系，並利用此進行粗頻偏估計，使頻率偏移的估計范圍大大增加。
  17. The full automatic mechanical arm is built for letoff and wrap - up systems. the extruding quantities of each unit are controlled by frequency motor, the forming system adopts the synchronous group control. the digital displays are used for letoff, wrapup, extruding, drawing, line speed and meter recording

    放卷、收卷設置機械手全自動控制；各組擠出量由變頻器控制電機來完成，成型系統由一臺變頻器群控三臺成型牽引電機，與機械配合達到同步，該設備的放、收卷、擠出、牽引、線速、計米全部由數字化顯示。
  18. The single - chip function generator icl8038 can get synchronous sine wave of constant amplitude in pll as voltage control oscillation ( vco ), which is a basic signal source of static frequency converter

    單片函數發生器icl8038在pll中作為壓控振蕩器（ vco ）產生同步等幅正弦波，可作為靜止變頻器的基準信號源。
  19. Sensorless control of permanent magnet synchronous motor based on high frequency injection

    基於高頻信號注入法的永磁同步電機無傳感器控制
  20. The couplers of accelerator structures are important components of electron knear. the efficient delivery of power from rf sources to accelerator structures depends crucially on the coupler cavity. the input coupler cavity is to be well matched, that is to say, it must have proper coupiing. and it must be tuned to the synchronous frequency. in this way, we can obtain the maximum power. in the past, the decision of the coupler cavity dimensions is very difficult

    加速結構的輸入耦合腔是電子直線加速器的重要組成部分。功率從功率源輸送到加速管中，就依賴于輸入耦合腔。輸入耦合腔在整個結構中必須有良好的匹配即有恰當的耦合度，還必須工作在諧振頻率。
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