查询词典 harmonics

Space vector modulation is an effective measure to eliminate the electrical harmonics in the power electronic system and, consequently, is possible to be utilized to reduce the torque ripple in an inverter-fed motor.

空间矢量调制是一种常用的消除电力谐波的调制技术，更可用于电机控制中转矩脉动的削减。

The missing harmonics with the er6 are ever-present with the 4s, as well as the overall power of his vibrato.

在er6中没有的却完全在4s中呈现了，联他精彩的颤音也是。

A new system based on vir- tual instrument to measure transformer harmonics has been discussed,including its hardware and software.

本文提出了一种基于虚拟仪器技术的新型电力互感器谐波检测系统，并讨论了这种系统的原理以及硬件和软件实现。

In the field of measurement and display, it ranges from ampere meter, Voltage Meter and fault current state directives to power factor, wattful power, wattless power, frequency, and even harmonics, the fault condition wave acquisition, and so on.

在测量、显示这块，如电流表、电压表、故障电流及状态指示，以及功率因数、有功功率、无功功率、频率，甚至谐波，故障状态的波形捕捉等等。

We know, PC is a digital system, the internal high-frequency characteristics of signal waveforms for the square wave, and square wave contains a large number of harmonics.

我们知道，PC是一个数字系统，内部高频信号的特征波形为方波，而方波含有大量的谐波。

This instrument generated the sine wave signal which frequency could change in three situations. The sine wave signal inputted to the buffer amplifier, then divided into two groups, a group connected with oscilloscope to survey the peak-to-peak value of fundamental wave, another group connected with wave trap to filter out the fundamental wave, then the oscilloscope was used to survey the various sub-harmonics amplitude of the output.

该仪器是通过设计可变三种频率的正弦波信号发生器产生的正弦波信号，其输出信号经过缓冲放大器，输入放大器后分为两路，一路接入示波器，测量基波幅值；另一路接入陷波器将基波滤去，再用示波器测量其输出各次谐波幅值。

Analysis of higher harmonics for FEL with a novel electrostatic wiggler .

静电摇摆器自由电子激光器的高次谐波分析。

The paper illustrates a construction scheme of experimental teaching platform based on virtual instrument and on the basis of experiment of harmonics measurement and analysis in the electrified wire netting,the application of virtual instrument on electrical and electronic experiment is introduced and the designing method of software and hardware is presented.

简述基于虚拟仪器技术的实验教学平台构建方案，并以电网谐波测量与分析实验为例，详细介绍了虚拟仪器技术在电工电子实验中的应用，给出了实例的软、硬件设计方法。

In order to let the active power filter could be used in 3-phase 4 wires circuits, a new method of harmonics detection is given in this paper, which is based on p-q method and ip-iq method of the instantaneous reactive power theory. This method remove the zero current.

综合运用瞬时无功理论中的p-q法和法，提出了一种新的基于瞬时无功理论的有效的三相四线制谐波检测新方法，此方法能将三相电流中的零序电流剔除。

For LIMS data used in this study, the local observed vertical profiles of temperature and ozone (both reconstructed on a 30°×4° longitude-latitude grid from the zonal mean and first five zonal harmonics) were used in a modified version.

对于本文所用 LIMS 资料中，温度和臭氧的局地实测垂直廓线在应用前作了处理(均根据纬向评价值和前 5 个纬向谐波函数值重建到格距为 30°×4°的网格上)。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。