zero modulation 中文意思是什麼
zero modulation
解釋
調零- zero : n （pl zeros zeroes）1 【數學】零；零號。2 零位；零點，起點；（溫度表的）零度，冰點；座標原點；無...
- modulation : n 調整，調節；（聲調的）抑揚，變化；【音樂】轉調，變調；【無線電】調制。 amplitude modulation 振...
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The magnetic reset by each pulse is proposed in this paper. that is how to control modulation ratio and let the increase of magnetic flux with each high frequency pulse reset to zero. so it will avoid magnetic flux saturation
本文採用逐個脈沖磁復位技術，就是在每個高頻脈沖之後及時採取措施，使每一個高頻脈沖引起的磁通增加都回復到零，從而避免磁芯磁通飽和。 -
Research of zero - cross modulation technology
過零調制技術研究 -
We derive an analytic expression of the group velocity dispersion ( gvd ) induced chirp and the self - phase modulation ( spm ) induced chirp in the normal dispersionregion of non - kerr - like optical fibers with saturable nonlinarity. the evolution of chirp is simulated by numerical methods. the studied results show that the more powerful saturable effects, the smaller is chirp and the gently is chirp. the net chirp is zero in the central region of the pulse
從理論上推導出具有飽和非線性的非克爾光纖正常色散區內，群速度色散效應導致的啁啾和自相位調制效應導致的啁啾解析表達式.利用數值解法模擬了非克爾光纖正常色散區啁啾演變過程.研究結果表明：當非克爾光纖的飽和非線性增強時，凈啁啾不斷減小，而且，越來越平緩，脈沖中心附近區域凈啁啾接近零 -
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。 -
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。 -
The main circuit of the design in this article we used is fb zvs pwm dc / dc converter, full bridge zero voltage switching pulse width modulation dc / dc converter, which is a full bridge circuit composed of four power switches using resonance to implement zero voltage when turning - on or turning - off
本文設計的通信電源充電模塊的主電路採用的是fbzvspwmdc dc變換器，即全橋零電壓開關脈沖寬度調制的直流變換器，它是由4個功率開關管組成的全橋電路，利用諧振使每個開關管在零電壓的條件下完成導通和關斷。 -
The first one, named modular intelligence ecology environmental protection housing, belongs to one kind of new monomer housing. it has realized the housing completely modulation, the standardized factory assembly line processing production. it may realize the housing itself energy zero supply, the housing security, defending against riots, and preventing from fire by the entire automatic controller
該生態住宅屬新型單體住宅，實現了住宅的全部模塊化標準化工廠流水線加工生產，可實現住宅本身的能源零供應家庭生活節水無回收價值垃圾的接近零排放等，同時可大幅度降低生產施工成本，提高土地的利用率，可作為別墅富裕農村民居中低層住宅樓度假村房屋工廠用房辦公樓酒店等多種用途。 -
In order to optimize the modulation performance, the relationships between the modulation signals ( include fundamental signals and zero - sequence signal ) and space vectors, between the modulation signals and space - vector sectors were discussed, then three kinds of optimal switching pattern of space - vector modulation are established
文章首先從研究svpwm調制中零序信號與零電壓矢量和非零電壓矢量之間的關系這一獨特角度出發，探討了svpwm的優化調制方法，找出了三種開關損耗小、適用於高頻化逆變器的優化開關模式。
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