harmonic distortion

The effect is termed harmonic distortion.

这种作用就称为谐波畸变.

The dynamic range and total harmonic distortion of digital recording system are different from analog recording system.

数字录放音系统的动态范围和总谐波失真与模拟录放音系统相比是有差别的。

This paper analyzes the influence of the reactive power and power factor measurement by the distortion waveform. Points out the accuracy evaluation of true reactive power and the total harmonic distortion measurement problems.

本文就波形失真对无功功率和功率因数测量的影响进行了分析，提出对真无功功率准确度的评估和总谐波畸变的测量问题。

Method Measuring Total Harmonic Distortion of Direct Digital Synthesizing Sine Wave

直接数字合成正弦波谐波失真度测试方法

Monitor apparatus can measure valid value of three phase voltage and current, power factor, three phase disequilibrium, instant flecker of short time and harmonic without twenty, degree and harmonic distortion total.

监测仪能够完成包括三相电压、三相电流的有效值、功率因数、三相不平衡、电压短期闪变、以及20次内的谐波、谐波相位、谐波失真总量等的测量。

It not only gets rid of the influence of harmonic distortion but also avoids the trouble of getting the solution of nonlinear equations, and it can satisfy the precise demand of ADC.

此方法既剔除了信号源谐波失真对系统性能测试的影响，又可避免一般正弦拟合法中求解非线性方程组的麻烦，同时还能满足ADC性能测试的精度要求。

AC Voltage Harmonic Distortion of Three-Phase Synchronous Generator with AC and Rectified DC Load

三相同步发电机供交直流混合负载时交流电压波形的畸变

Conventional UPS systems operate to protect against such harmonic distortion brought by nonlinear load using complex filtering schemes, often employing large passive components.

对于非线性负载所引起的谐波失真，传统的逆变系统通常采用复杂的大规模无源元件滤波方案来滤除。

Faraday are incorporated into the ultra-low distortion motor, further reducing? harmonic distortion as much as 20 dB.

超低失真马达采用法拉第振铃, 进一步降低谐波失真达20分贝之多.

The waveform distortion is caused by the nonlinearity of the amplifier circuit, so it is often called as nonlinearity distortion. The nonlinearity distortion also include harmonic distortion and intermodulation distortion.

波形失真又称非线性失真，它是由放大电路的非线性引起的，非线性失真又包括谐波失真和互调失真。

The SPEC-4 actually had lower total harmonic distortion and lower intermodulation distortion than its more expensive brother.

在SPEC-4实际上有较低的总谐波失真低于其更昂贵的兄弟互调失真。

Analysis of the Sine Signal Distortion and the Total Harmonic Distortion

正弦波形畸变和失真度的分析

The actualization of optimal power flow control of solar cell power system and the compensation of reactive power, harmonic distortion are discussed.

文中还讨论了太阳电池发电系统最佳功率流控制的实现方法以及补偿无功功率和谐波失真等问题。

Data compressions for power consumption signal, voltage interruption signal and transient harmonic distortion signal are simulated and the compression results with different decomposition levels and threshold coefficients are compared. Results prove its feasibility and effectiveness.

对用电消耗信号、电压间断信号及暂态谐波失真信号进行了压缩仿真，并比较了这些信号在不同分解层次和门限限定系数取值时的压缩效果，结果验证了该方法的可行性和有效性。

It affects the SNR signal-to-noise ratio and the THD ( total harmonic distortion ) of a conversion.

它影响转换的SNR( 信噪比)和THD ( 总谐波失真 ).

Using DFT to calculate SNR and harmonic distortion of telemetry seismic data acquisition system, if the recording length of data is not integral multiple of sine wave's period, the energy of the fundamental wave and its harmonic will leak to the vicinity region.

在用离散傅里叶变换（DFT）计算遥测地震数据采集系统的信噪比（SNR）和谐波畸变时，如果数据记录长度为正弦波周期的非整数倍，基波及谐波的能量会泄漏到邻近频率。

Total Harmonic Distortion and Dynamic Range of Digital Recording System and their Measurement

数字录放音系统的总谐波失真与动态范围及测量

In this paper, the meanings of dynamic range and total harmonic distortion of digital recording system and their measurement principles are discussed.

本文讨论了数字录放音系统的动态范围和总谐波失真的意义及其测量原理。

Class D Audio Amplifier with High Efficiency and Low Harmonic Distortion

高效率、低失真的D类音频功率放大器

Through analyzing traction bus current, traction bus voltage before and after compensation, the relationship between three-phase current unbalance degree, traction current total harmonic distortion rate and compensation degree is presented.

并通过分析平衡牵引变压器补偿前后的牵引母线电流、牵引母线电压，得出三相电流不平衡度、牵引电流总谐波畸变率与补偿度之间的关系。

The total harmonic distortion ( THD ) is written as the following expression.

总谐波失真 ( THD ) 是书面下列表达.