| 1. | Harmonic component extraction from a chaotic signal based on emd method
方法的混沌信号中周期分量的提取 |
| 2. | 3 the effective value of a non sinusoidal periodic function is equal to the square root of the square sum of the constant component value and every harmonic component effective value
非正弦周期函数的有效值等于直流分量与各次谐波分量有效值的平方和的平方根。 |
| 3. | However , the waveforms of motor currents are difficult to control . the harmonic components of the current will produce torque pulsation , additional losses and some emi problems
电压源方式主回路比较简单，但电流波形难以控制，且谐波所带来的转矩脉动和损耗比较大， emi问题难以解决。 |
| 4. | It can be seen that the difference of the harmonic component comes from different strategy , and it can also be reffered that the difference of the harmonic component reflects the decreation of the harmonic component
可见谐波成分的不同来源于不同的调制策略，并且可以推测谐波成分的不同反映的是谐波成分的减少。 |
| 5. | Aiming at extracting harmonic components of signals , a filter progress is designed . during the progress , the technology of sampling rate alteration worked as an aid in dividing different frequency signals
针对一定谐波含量的信号，设计了将谐波分量分离的滤波过程，在此过程中引入采样率转换环节，配合小波滤波器实现不同频段信号的分离。 |
| 6. | Some methods were proposed , but there still exist some questions , for example the method for analyzing the harmonic component at pcc . in this paper , the harmonic components at pcc were detailed analyzed , a new method and a new model were proposed to analyze the harmonic
本文在前人的基础上，对pcc处的谐波成分作了较为详尽的分析，在分析方法也提出了自己的观点和分析谐波成分所用的新的模型。 |
| 7. | After the nonlinear and absorption effect is taken into account in the applications where high power ultrasonic is involved , the first and second harmonic components of the sound field of stepped circular plate is analyzed , based on the kzk equation and quasi - linear condition
考虑到大功率超声应用中的非线性和吸收作用，本文从kzk方程和准线性条件出发，对于工作在共振频率下的这种阶梯圆盘，推导了它的一阶和二阶谐波声场计算方法。 |
| 8. | We now take digital circuit approaches to realize the algorithms , i . e . using microprocessor to calculate harmonic components . so as to overcome disadvantages of analogy circuits , for example , instable circuit parameters , low calculation accuracy , inconvenient regulation and low integration level
在算法实现上，采用数字方式，即采用微处理器进行数值计算，克服了模拟电路元件参数不稳定、计算精度差、调节不方便和集成度低等缺点。 |
| 9. | In order to analyze the rotation noise further , a new method for measuring the amplitude and phase of each harmonic component of periodic signal mixtures is established based on the morlet transform and fourier transform in theory , which will provide scientific warranty for reducing noise of disk mill
为了进一步分析爪式粉碎机的旋转噪声，理论上利用morlet小波变换结合fourier变换对旋转噪声各次谐波成分的振幅和初相位的提取，作了初步探讨。 |
| 10. | Harmonic components of the input current in method 2 is lesser than method 1 , neglecting the losses and switching effects of the converter . the decreation of the harmonic components is not apparent , but different between method 2 and method 1 , due to the influence of switch losses of the igbt , which is consisted of two igbt and two frd
当仿真模型中的双向开关由两个igbt和两个快恢二极管组成时，由于igbt的开关损耗等因素对输入电流的影响，在仿真得到的输入电流频谱图中，谐波成分的减小不是很明显，但调制策略方式2和方式1的谐波成分仍有所不同。 |
