frequency hysteresis 中文意思是什麼

frequency hysteresis 解釋
頻率滯后
  • 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。
  • hysteresis : n. 1. 【物理學】磁滯。2. 【物理學】滯后現象[作用]；遲滯性。3. 平衡阻礙。
  1. Based on the magnetic field data, this paper presents a double - frequency method to separate eddy current lossand hysteresis loss from iron loss, then different methods are used to calculate the two losses separately

    在磁場計算所得數據的基礎上，本文提出了採用雙頻法分離出sr電機鐵損中的渦流損耗與磁滯損耗，並分別採用不同的方法計算出這兩種損耗。
  2. The control tactics of space voltage vector are investigated, and the simplified algorithm which judges the sector location of reference vector and calculates switch operation time is put forward. by analyzing the current hysteresis control, the relation between switch frequency, and hysteresis bandwidth and input inductance of pwm rectifier is deduced. by applying instantaneous power theory, the principle of pwm rectifier power control is analyzed, and the direct power control by matlab toolbox through estimating active power and reactive power with virtual flux is realized, and the simulation results prove that it is correct

    對常用空間電壓矢量控制策略進行分析，提出了給定參考矢量所在區間判斷的簡化方法，以及電壓矢量作用時間的求取方法；分析了電流滯環控制策略，推導出開關頻率與滯環帶寬以及整流器輸入電感之間的關系；應用瞬時功率理論分析pwm整流器功率控制原理，通過虛擬磁鏈估計有功功率和無功功率，用matlab實現了直接功率控制，並驗證了該控制方法的正確性。
  3. In order to avoid the current ripple and the high switch frequency of fixed - band hysteresis current controllers, two hysteresis controllers of change hystersis - band are proposed. one is the sinusoidal - band hysteresis current controller, the other is the adaptive hysteresis current controller based on fuzzy theory

    由於常規的滯環電流控制器不能有效地防止負載電流脈動，並且存在著容易導致逆變器的開關器件的開關頻率過高的問題，論文提出了兩種變環寬滯環電流控制器結構，其一是正弦環寬滯環電流控制器，其二是模糊變環寬滯環電流控制器。
  4. Xrd, sem, temperature and frequency dependence of dielectric constant, and hysteresis loop were measured to investigate and study structure, microstructure, dielectric and ferroelectric properties of barium titanate dielectric ceramics

    應用x光衍射譜、掃描電子顯微鏡、介電率的溫度與頻率依存關系以及電滯回線測量，調查和研究所制備的鈦酸鋇陶瓷的結構、微結構、介電和鐵電性質。
  5. 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。
  6. The shunt active power filter which uses the i p ? iqmethod and the hysteresis - based current control strategy has been simulated, and analyze the inductor and the cut - off frequency which affect the performance of shunt active power filters

    Iq諧波電流檢測和電流滯環跟蹤控制技術的並聯型有源電力濾波器進行了模擬研究，重點分析了影響有源電力濾波器補償效果的濾波電感和采樣電路截止頻率。
  7. To study the of effect of insulator layer among tapes in a stack and the influence of frequency of ac transport currents on ac losses, ac losses of a single tape and stacks were measured for ac transport current with different frequencies in two cases : with and without insulator among the tapes in a stack. theoretical formulae to calculate hysteresis losses in stacked tapes were also presented

    研究了高溫超導帶材及並聯堆疊帶材的交流損耗隨傳輸電流頻率的變化情況；及多根並聯組合超導帶間絕緣對交流損耗的影響情況；實驗研究了並聯堆疊帶材的各向異性特性；給出了有限根超導帶並聯時，磁滯損耗的理論計算公式。
  8. The other is to simulate simple lc filters which call ideal and real inductors model, then we can get the simulating results such as time 、 phase movement and amplitude - frequency specifications are very different mainly due to hysteresis. in all, this paper presents some called real inductors models and provides a design method of real inductor model

    模擬結果表明，調用磁芯電感模型的模擬曲線比調用理想電感的情況滯后、幅值小，反映了磁芯電感元件的電感量、磁滯效應和磁滯損耗都影響濾波器的時移、相移和幅頻特性。
  9. Core losses are caused by an alternating magnetic field in the core material, thie losses are a function of the operating frequency and the total magnetic flux swing, the total core losses are made up of three main components, hysteresis eddy current and residuallosses, these losses vary considerably from one magnetic material to a - nother, applications such as higher power and hither frequency switching regulators and rf designs require careful core selection to yield the highestinductor perfor - mance by keeping the core losses to a minimum

    鐵損是由於在鐵芯中的變更磁場院所造成，這個損失與操作頻率及總流動的磁通量有關，總鐵損由三個成份組成，磁滯損，過流損及殘留損，這些損失因磁性材料不同而異，在如高功率切換調整器和rf的設計需要小心選擇鐵芯種類以降低鐵損使電感的表現最佳。
  10. Because quasi - fermi levels of a laser diode ( ld ) vary with the carrier density, it is predicted that a new type of hysteresis loop should occur for the current passing ld while a hysteresis loop appears on the power - frequency curve of the ecld. an explicit analytical expression for the frequency width of the hysteresis loop and the condition for the formation of the hysreresis loop has been deduced

    預測了由於半導體激光二極體（ ld ）的準費米能級之差隨ld內線流子密度的變化而變化，因而，在調諧外腔半導體激光器的輸出功率?振蕩頻率曲線上出現雙穩環的時候，通過ld的電流也應出現一個伴隨的新型雙穩環? ?電流雙穩環。
  11. Experiments on board shows that strain method to measure the shaft power has many advances, e. g., high sensitivity, wide measuring span, rapidly frequency - response, light hysteresis, small size and weight - light of the equipment, remote - controllable

    應變電測技術在艦船軸系軸功率測試中得到廣泛的應用，是由於該系統具有靈敏度高，測量范圍廣；頻率響應快，機械滯后小；體積小、重量輕；可實現遙控等諸多優點。
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