ripple frequency 中文意思是什麼
ripple frequency
解釋
波紋頻率-
The 1mhz fixed frequency switching allows for tiny external components and the regulation scheme is optimized to ensure low emi and low input ripple. an external resistor sets the full - scale led current, while two digital inputs control on / off and select amongst three levels of brightness. the circuit operates in 1x mode until just above dropout
工作在1mhz固定頻率，採用線性調制模式使輸入紋波大大減小;利用一個外部電阻可以設置滿量程led電流;外接兩個數字信號控制晶元開關並選擇led三級亮度中的一級;具有過溫、過壓/欠壓等保護功能，工作溫度范圍為- 40 + 85 。 -
Chaotic switching modulations introduce low - frequency harmonic spectrum of output voltage as random switching modulation. in some case, low - frequency noise ripple offset the effect chaotic switching modulations reduce the level of emi. it indicates that the ccfmfd integrates the advantages of spreading harmonic power at the multiples of the switching frequency and not introducing significant noise ripple at low - frequency range. among all chaotic switching modulations, the ccfmfd is considered as the best choice in applying to dc / dc converter
與隨機調制模式相同，混沌開關調制模式也引入輸出低頻噪聲紋波，有些情況下低頻噪聲紋波可能抵消混沌開關調制降低emi水平的效果。分析表明： ccfmfd模式具有較好的降低emi水平和引入較小低頻紋波的優點，可以作為混沌調制模式較佳的選擇。 -
Long life grade, low e. s. r., high ripple current rating and outstandingly good high frequency impedance, tol
長壽級，低esr ，高漣波電流級和傑出不錯的高頻阻抗特性 -
Modified formula for sensorless dc motor speed estimation was proposed through the test for relationship between the current ripple frequency and the rotation speed in a 4 - pole dc motor
摘要根據4極直流電動機的轉速與脈動電流頻率關系的實驗結果，對現有的無傳感器直流電動機測速公式提出了修正意見。 -
The new modified formula not only meets with our experiment result, but also can explain the examples of relationship between the speed and the current ripple frequency of dc motors in the literature
新的修正公式不僅能夠解釋文中的實驗結果，也能滿足以往文獻提出的直流電動機轉速與脈動電流頻率之間的關系。 -
However, psm also have some disadvantages, for example, the output voltage ripple is large at light load and the system maybe produce radio frequency noise
但psm也具有不可避免的缺點:輕載時輸出電壓紋波較大，且易引入音頻噪聲。 -
This dissertation put forward a method of eliminating noise and reconstituting broken wires signal and inquired the space - frequency range of the signal ripple resulted from tensile stress on the mfl signal curve
提出了去除干擾重組斷絲信號的方法，分析了漏磁曲線上應力波紋的空間頻率分量。 -
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。 -
The goal of this paper is, by serial / parallel combination technique of two - transistos forward converters ( ttfcs ), to keep the merits of the ttfc, and to overcome the shortages of it. the interleaving technique is adopted, while in combining ttfcs. the interleaving technique lowers the net ripple amplitude and raises the effective ripple frequency of the overall converter without increasing switching losses or device stresses
組合式雙管正激變換器由雙管正激變換器串並聯構成，應用交錯控制策略，在保留雙管正激變換器功率開關管電壓應力低和可靠性高的優點同時，克服了等效占空比小、副邊二極體電壓應力高、輸出電流脈動大等缺點。 -
The simulation of debye theory and the experimental results can prove the results obtained. the relation of ripple frequency of the second rainbow with the diameter of particle is simulated by lorenz - mie theory, and used in particle sizing with high precision
利用lorenz mie理論模擬了均勻粒子二階彩虹的ripple頻率與粒子直徑的關系，獲得了ripple頻率與直徑的經驗公式，並用於粒子直徑的實驗測量中，測量精度很高。 -
The interleaving two - transistor forward converter succeeds to the advantages of the two - transistor forward converter, it has two units working alternately, the power loss of the converter is distributed and the output voltage ripple frequency is twice of the switching frequency
交錯並聯結構式的雙管正激變換器，繼承了雙管正激變換器的優點，兩個並聯單元互補工作，分擔了功率損耗，等效占空比擴大了一倍，輸出電壓的脈動頻率變為功率管開關頻率的兩倍。 -
When examination, the power supply basic performance carries on the test in the power source output line plug place, the output ripple and the noise test must in the test point parallel 47u / 16v tantalum electric capacity and 0. 1 u f high frequency electric capacity
檢驗時，電源基本性能均在電源輸出線插頭處進行測試，輸出紋波及噪聲測試需在測試點並聯47 / 16v鉭電容及0 . 1 f高頻電容。 -
The specification is that the cutoff frequency must be more than 15mhz, the maximum passband ripple must be 0. 2db and the minimum stopband attenuation must be 40db
該濾波器要求截止頻率大於15mhz ，通帶最大紋波為0 . 2db ，阻帶最小衰減為40db 。 -
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。 -
Isolated boost converter has advantages of high frequency electrical isolation, multi - output solutions, lower input ripple current and high reliability for the short circuit of load, etc. it is attractive in applications such as high voltage multiple outputs with isolation requirement, single stage power factor correction and bi - directional dc / dc converters
電氣隔離型boost變換器具有高頻電氣隔離，易於多路輸出，輸入電流紋波小，負載短路時可靠性高等優點。它適用於有隔離要求的高壓多路輸出、雙向pwm直流變換和單級pfc等場合。 -
Chaotic switching modulations generated from different chaos sequences introduce low - frequency output noise ripple : in the cpwm, cppm and ccfmvd, the output noise ripple introduced by henon map chaos sequences is smaller than chua ' s circuit chaos sequences ; in the ccfmfd, chua ' s circuit chaos sequences introduced smaller noise ripple. this clue to us that it is important to choose chaos sequences in applying chaotic modulation to dc / dc converters
不同混沌調制信號對輸出紋波影響的分析結果表明： cppm 、 cpwm和ccfmvd模式下， henon映射混沌序列引入低頻噪聲紋波比蔡氏電路摘要混沌序列要小; ccfmfd模式下，蔡氏電路混沌序列引入的低頻紋波要小。這提示我們:在開關模式電源使用混沌調制控制時混沌序列的選擇也具有重要性。 -
For ac discrete digital signal, the zero - calculating method is applied to calculate the true zero in the periodic signal. for the measurement of ac and dc voltage spectrum, the faster fourier transform ( fft ) is used. to measure dc voltage ripple spectrum and frequency modulation of ac voltage, the digital filter is used
其中對于交變的離散數字量，採用零點撿出技術計算周波信號的真實過零點；對于交直流電壓頻譜，採用快速傅立葉變換進行頻譜分析；對于直流電壓脈動和頻率調制，採用數字濾波器進行濾波后再做分析處理。 -
In the meantime, the paper introducted the method of fixed - frequency sampling in combination with commutation method by overlap in order to hold back the torque ripple of bldcm
論文主要研究了兩相和三相無位置傳感器永磁無刷直流電機由電流換相引起的轉矩波動，推導出相應的轉矩波動公式，提出一種採用定頻采樣和重疊換相相結合的方法對換相轉矩波動進行抑制和控制。
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