離散諧波 的英文怎麼說

中文拼音 [lísǎnxiébō]
離散諧波 英文
discrete harmonic
  • 離 : Ⅰ動詞1 （離開） leave; part from; be away from; separate 2 （背離） go against 3 （缺少） dispens...
  • 散 : 散動詞1. （由聚集而分離） break up; disperse 2. （散布） distribute; disseminate; give out 3. （排除） dispel; let out
  • 諧 : Ⅰ形容詞1 （和諧） in harmony; in accord; in tune 2 （詼諧） humorous Ⅱ動詞（商量好; 辦妥） come t...
  • 波 : Ⅰ名詞1 （波浪） wave 2 [物理學] （振動傳播的過程） wave 3 （意外變化） an unexpected turn of even...
  • 離散 : dispersed; scattered about; separated from one another; spread; debunching; straggling; fringing;...
  1. It is discussed that the present harmonic analyzers do n ' t satisfy the requirements of china standard for harmonic measure of quick disturbance harmonic load. the measurement error brought about by the harmonic analyzers adopting ft or fft algorithm is analyzed. a cycle discrete fourier algorithm that should n ' t be effected by aperiodic component is presented, and the results of simulation show that it has higher accureacy

    本文對電力系統諧波的測量方法，數據處理及電力牽引負荷對電力系統的影響進行了研究，論述了目前國內外生產的諧波分析儀用於快速波動諧波負荷的測量不滿足國標的要求，分析了諧波分析儀普遍採用的ft或fft演算法所產生的測量誤差，提出了一種不受非周期分量影響的全周波離散傅里葉演算法，模擬結果表明精度好。
  2. Dual randomized modulation technique is more effective than existing simple random modulation schemes, such as random position modulation or random switching frequency modulation, in dispersing the power spectrum

    與已經存在的任何一種單隨機方案相比，雙隨機調制技術驅散諧波能量而使之具有更寬的帶寬，能更加有效地減少功率變換器系統的離散譜峰值。
  3. One is to use fourier transformation to convert the source signal from time domain to frequency domain and to discard high frequency harmonious components upwards of 19 ( gb / t14953 - 93 d5. 3 demanding ), then to have static huffman coding to the quantized char array which is composed of reserved direct current component and basic wave and each high frequency " s amplitudes and angles. the other is to use discrete wavelet transformation to convert the source signal from time domain to frequency domain and to set the high frequency coefficients that its absolute value is smaller than the given threshold to zero, then to have dynamic huffman coding to the quantized char array which is composed of multiple, wavelet ' s level, datum length, low frequency coefficients and reserved high frequency coefficients. mass simulinks and analyses under the two circumstances have done to show that data compression ratio is small and the relative error is also small and within the permission of engineering and the compression problem can be solved in theory of measured datum of power system

    第一種情況的壓縮方法為：採用傳統的傅立葉變換把原始信號從時間域變換到頻率域，舍棄20次及其以上的高次諧波成分（保證了gb / t14953 ? 93d5 . 3要求） ，然後對保留的直流分量、基波和各次諧波的幅值和相角數據量化后和量化時分別乘以的倍數系數構成一個數組，以字元形式保存，採用靜態huffman編碼對變換數據進行壓縮；採用離散小波變換把原始信號從時間域變換到頻率域，然後對分解得到的高頻系數進行閾值量化處理，對乘以的倍數系數、小波變換的階數、小波變換后的低頻、各級高頻以及原始數據長度、量化后的低頻系數以及保留的高頻系數大小、位置構成一個數組，以字元形式保存，採用動態huffman編碼對這個文件進行壓縮。
  4. Dft - based analysis of harmonic influence on the electric power measurement

    基於離散傅立葉演算法諧波對電能計量影響
  5. The research for the real - time detection method of single - phase circuit harmonic current based on dft

    基於離散傅立葉變換的單相電路諧波電流實時檢測方法的研究
  6. After the comparison with many algorithm, the paper chose alternating sample algorithm, and we also proposed a kind of fourier algorithm on the basis of dispersed fourier algorithm and its fast fourier algorithm, it improved systematic operation efficiency greatly, and made it can be used online among the practical devices. the system adopted module design, which was the foundation of upgrading and expanding system

    本文還通過與多種演算法的比較，經綜合考慮最終選取了適應系統需要的交流采樣方式，均方根演算法，並提出了一種基於離散傅立葉變換及其快速傅立葉演算法的用於諧波分析的全周波傅立葉演算法，其大大提高了系統的運算效率，使之能夠在實際裝置中在線使用。
  7. Taking the second harmonic generation of gaussian beam in a kdp crystal of type matching for example, the effects of diffraction and walkoff on doubling conversion efficiency have been worked out

    以類匹配kdp晶體中高斯光束的二倍頻為例，對衍射和離散兩種因素對二次諧波轉換效率的影響進行了數值模擬計算。
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