| 1. | We are usually it is really wave that what say lose lose true , point at the voice return to put of process inside , increased the original signal the composition of high wave that have no but cause of lose really
我们通常所说的失真是谐波失真，指在声音回放的过程中，增加了原信号没有的高次谐波成分而导致的失真。 |
| 2. | 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。 |
| 3. | In the second one , the input current displacement angle is dynamically modulated as a function of positive and negative sequence components of the input voltages . in both cases , the harmonic content has been evaluated analytically
第二种方法中，输入电流矢量根据输入电压正、负序成分进行动态调制，并对两种情况下的输入电流的谐波成分都进行了分析。 |
| 4. | To reduce the harmonics in the line current , the random pwm mode is adapt . related to the typically constant pwm carrier frequency and its high harmonics , modulation of this frequency can be used to decrease emi and cost no more gain
为了抑制输入电流中一些幅值较大的谐波成分，利用dsp控制的特点，电路采用了随机pwm方式，在不增加系统成本的前提下，有效地抑制了输入电流的高次谐波含量。 |
| 5. | 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。 |
| 6. | The lower - band spectrum caused by unbalancing rotor and eccentric error of primary axes is analysised firstly . the vibration of basic factors and its features caused by the basic member are discussed , such as turbo - propellers , planetary - reducer and bearings
首先分析系统中由于主转子动静不平衡、主轴不对中而激发低频谐波成分的现象，而后讨论螺旋桨、行星减速器及轴承的振动故障机理以及整机振动综合分析方法。 |
| 7. | The point of common coupling ( pcc ) is a bus which connects the customer and utility . the research of harmonics and its components at pcc is a valid way to distinguish the responsibility between customer and utility and to manage the harmonic producer
公共耦合节点（ pcc ）是联系系统和用户之间的那条母线，研究公共耦合节点处的谐波含量及其中的谐波成分是明确用户和系统责任所在以及管理产生谐波用户的一个行之有效的方法。 |
| 8. | For frequencies below 800hz , the normalized sew magnitude spectrum is quantized , while for frequencies higher than 800hz , the magnitude spectrum of the sew is approximated by the magnitude spectrum of rew . orthonormal polynomials are used to represent the magnitude spectrum of the rew in this thesis
本文中对归一化的sew只传送其低于800hz的谐波成分，而高于800hz的谐波成分，根据此处cw功率谱近似等于一，通过rew的幅度谱来恢复。 |
| 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。 |
