| 1. | All the results show that the fundamental waves play a role of " catalyzer " in these nonlinear interactions 研究表明,非线性过程中基波起“催化剂”作用。 |
| 2. | Second harmonic is generated by 532nm fundamental wave on clbo , and the harmonic pulse is plotted along with the clbo crystal length 以波长为532nm基波为例,数值模拟了经过不同长度的clbo晶体后谐波的脉冲波形,及脉冲宽度随晶体长度的变化。 |
| 3. | In laboratory , this system has fulfilled the measurement of simulant large current and high voltage , with the precision better than 1 % to the fundamental wave 在实验室中成功测量了模拟大电流与高电压,基波测量精度优于一级,对其它各次谐波的测量精度满足国家标准要求。 |
| 4. | This approach doesn ' t require synchronized sampling and integer period truncation , and can obtain directly the frequencies , amplitudes and phases of fundamental waves and harmonics 该方法不需要同步采样和整周期截断,可一次性获得电力系统基波及各次谐波的频率、幅值和相位。 |
| 5. | For example , to the frequency splitting between fundamental wave and second harmonics , the filter daub6 and cqf12 do well in extract the fundamental wave , whereas the filter daub5 and daub6 do well in extract the second harmonics 如对于基波与二次谐波的分频, daub6和cqf12滤波器对基波的滤波效果较好,而daub6和daub5对于二次谐波的滤波效果较好。 |
| 6. | The detecting method of dvr is different from harmonic and reactive current detecting methods . it need detect not only total harmonic distortion but also the difference between fundamental wave component and reference value Dvr的检测方法与谐波、无功电流的检测不同,不但需要检测出除基波分量之外的总畸变分量,还要检测出基波分量与基波基准值之差。 |
| 7. | The numerical work gives out lot of results of different aberrations . the effects of the fundamental wave ' s aberrations , which will change the conversion efficiency , distribution of intensity and phase in the frequency conversion , is analyzed 研究结果表明位相失配和走离效应是影响谐波位相的重要因素;像差在非线性光学过程中传递结果不是线性叠加的,而是非线性的。 |
| 8. | 2 . a theoretical analysis and numerical simulation considering pumping beam waist , q - switch , cavity design are presented . combine with the theoretical analysis and the request of fundamental wave , the appropriate cavity and q - switch are chosen 2 .从谐振腔设计理论及调q技术进行分析,讨论了ld泵浦固体激光器的输入输出特性及影响阈值的主要因素;结合理论和我们下面工作的要求,选择合适的腔形及调q方式。 |
| 9. | A new harmonic analysis method for electric power systems based on triangle basis functions neural network was presented , the convergence theorem of the algorithm was proposed , and a window function and interpolation algorithm were employed to correct the frequency of fundamental waves 摘要提出了一种新的基于三角基函数神经网络的电力系统谐波测量方法,给出了该神经网络算法的收敛定理,并采用加窗插值算法修正基波频率的准确度。 |
| 10. | Problems of traditional measuring methods are analyzed and a new method based on the theory of voltage - dividing capacitor is brought forward . to extract fundamental wave in signals efficiently , a new calculation method of dielectric loss based on ann is introduced in detail . b / s mode is applied to realize insulation information inquiry system in web style 具体工作如下:设计了一套先进的绝缘在线监测系统框架;分析传统测量方法的问题,提出了基于电容分压原理的测量方法;采用计算机串口来进行数据的传送;为有效提取信号中的基波分量,详细介绍了一种基于人工神经网络的介损计算方法;采用b / s模式,实现基于web方式的绝缘监测信息查询系统。 |