查询词典 harmonics

Calls were found from sonograms to be very simple with more harmonics and with high note repeat. Songs are more complex.

同时发现其声谱图结构比较简单，表现出高度的音节重复并多有谐波的现象。

This deviation from perfect sinusoids is usually expressed in terms of harmonics distortion of the voltage and current waveforms.

这种偏离完全正弦的畸变称为电压、电流波形的谐波畸变。

This paper presents the carrier swapping method, this method not only can balance the DC current, but also can reduce the AC current harmonics. This paper introduces the principle of this method and gives the experimental results.

本文提出了载波轮换均流方法，此方法既可实现直流均流，又可降低交流谐波，本文介绍了其原理，给出了实验结果。

The principle of the novel single-phase hybrid active power filter is described in detail. Based on the above analysis, Kalman filtering approach for estimation of harmonics is presented to improve the speed and precision of harmonic detection, and it also can avoid the influence made by voltage distortion on harmonic detection. A new current control strategy based on energy balance is presented to regulate the active part absorbing or releasing active power and control the inverter to produce current opposite to the harmonic current reflowing in injection branch, the above method combined with harmonic current tracking control that keeps the stabilization of dc-side voltage and improve the reliability of the system.

并详细分析了系统的滤波原理，提出了基于卡尔曼增益自调整的改进型动态谐波含量估计方法，能够快速准确的跟踪检测电网谐波电流，并且克服了电力机车等冲击性负荷引起的电网电压畸变对谐波检测精度的影响；提出了基于逆变器两侧能量平衡的电流控制方法使有源部分吸收或释放一定有功或无功功率及产生与注入支路回灌谐波电流相反的抑制电流，然后联合电网谐波电流跟踪控制以获得系统参考信号，保证了直流侧电压的稳定，提高了装置可靠性，增强了系统滤波性能。

A tuned circuit in the plate is used to peak response, maximizing output and helping to suppress harmonics.

屏极所接的调谐回路作为发射配谐，使发射达到最大并能抑制谐波。

These results show that the choice of pole number and slot number has a significant effect on the performance and the proper choice of the pole-slot number combination and pole embrace can weaken the effect of output voltage harmonics and reduce usage of magnet material,as well as save cost,which are helpful to obtain the better performance.

结果表明：极槽匹配对直驱式风力永磁发电机性能有很大影响；通过合理选择极数、槽数以及极弧系数，可以减少输出电压谐波分量的影响，降低永磁材料的使用，节省成本，有助于直驱式风力永磁发电机获得良好的性能。

Application of smoothed pseudo Wigner-Ville distribution in detecting harmonics and short duration voltage variations.

平滑伪Wigner-Ville分布在电力系统谐波和电压变动检测中的应用。

The digital users signals comprising in-phase component and quadrature component are converted to analog baseband signals by digital-to-analog converters 104 and 114, which are followed by lowpass filters 106 and 116 for removing harmonics at unwanted frequencies.

包括同相分量和正交分量的数字用户信号通过数模转换器104和114转换成模拟基带信号，在数模转换器104和114的后面具有低通滤波器106和116，低通滤波器106和116用于去除在不期望频率处的谐波。

In Chapter 5 and 6, a suite of calculation method of branch model and their parameters, which can fully consider the effects of various spatial harmonics, is worked out. In the last chapter, the calculation method of the asynchronous starting characteristics of the new type machines at quasi-stationary state have been discussed in details.

第四章则针对变极凸极同步电机的特点，通过对其气隙磁场谐波性质及其作用的分析，得出了若干具有理论和实用价值的结论，在此基础上，第五、六两章则提出并建立了一套能够充分考虑各种性质空间谐波影响的支路模型及其参数计算方法。

Switching power supply ; line trap ; harmonics

开关电源；阻波器；谐波

Vishnu entered a dark fourth dimensional dream that did not support his field or continued life.

毗瑟挐进入了一个第四密度的黑暗梦想，那里并不支持他的能量场或继续生命。

Leaders and decision-making persons use it to collect the data, including the information of unit work, handing in fee, oweing fee, prepaying fee,changing and afterpaying and account transfering of joining-insurance employee, and account paying of all kinds of insurances from hospitalization insurance institutions.The collected data is picked up, organized, switched and showed to user.

该子系统主要面向各级领导、决策分析人员；从各个医疗保险经办机构和定点医疗机构采集数据，包括在各个医疗保险经办机构处理的单位办公信息，单位缴费、欠费、预缴费信息，参保职工变更信息，参保职工增减变动信息，参保职工补缴信息，参保职工帐户划拨信息：包括各定点医疗机构处理的各险种帐户支出信息，各险种的统筹金支付信息等；将采集的数据提取，组织和转换，然后展示给用户。