1) the character of linear phase-frequency
线性相频特性
1.
It s the important component in the process of deal with the information,that article are analysis the character of linear phase-frequency and we can know about how to get the structure directly.
本文对该滤波器的线性相频特性进行分析 ,同时提出直接型结构图和根据中心对称特性提出的直接改进型结构
3) phase frequency characteristic
相频特性
1.
The tester for frequency response characteristic based on DDS is introduced, it uses micro controller as the key device, to measure the frequency characteristic of network, then display amplitude and phase frequency characteristic curves with LCD and print them.
介绍了基于DDS设计的频率特性测试仪,整个系统以单片机为控制核心,实现了对被测网络频率特性的测量,用液晶显示器LCD显示幅频特性和相频特性曲线,同时还可打印频响曲线。
4) phase-frequency characteristics
相频特性
1.
The curves of amplitude-frequency and phase-frequency characteristics were obtained based on the derived frequency characteristic equations.
在导出的频率特性方程的基础上,仿真得到相应的幅频特性曲线和相频特性曲线。
2.
Via a special test circuit,the amplitude and phase-frequency characteristics o.
通过专用测试电路,获得了这种衰减器的幅、相频特性,并成功应用于某型号产品的和差波束形成网络的设计。
5) phase-frequency characteristic
相频特性
1.
In view of the distribution of different frequency in terms of phase-frequency characteristic, the polarity of zero sequence transient current in fault line is demonstrated to be opposite to those in healthy feeders in the selected frequency band (SFB).
根据线路的相频特性将频率分为不同的区段,论证了在选定频段(SFB)内,小电流接地系统健全线路零序电流极性与故障线路相反;应用小波包以适当频率带宽对各线路的暂态零序电流进行分解,小波包系数的符号表示相应频段零序电流的极性;在SFB内按照能量最大的原则,确定各线路暂态零序电流分布最集中的频带所对应的小波包分解树节点,通过比较所有线路暂态零序电流在各自能量最大节点处的小波包分解系数的极性,自适应地实现故障选线。
2.
It can be used to measure the amplitude-frequency characteristic and phase-frequency characteristic of the unknown network, and give the real-time the transmission-characteristic measurement of the unknown network.
扫频仪也称频率特性测试仪,用于测试网络的幅频特性和相频特性,在现代电子测量中占有重要的位置。
3.
It is showed that the field-test parameters are better than the parameters supplied from ABB Company with the online compensating phase-frequency characteristic and a step interference test.
经过在线有补偿相频特性、负载阶跃干扰试验结果的比较,表明采用现场整定的PSS参数抑制低频振荡效果优于厂家提供的PSS参数,机组长期运行的PSS参数应按现场整定的值设置。
6) angle-frequency characteristics
相频特性
1.
The characteristics of transient zero sequence voltage and current produced by earth fault in different frequency bands,which can be decomposed according to angle-frequency characteristics of feeders detected impedance,are analyzed.
针对已有暂态分析方法存在的不足,建立了基于线路分布参数模型的小电流接地故障模量结构图;根据线路相频特性将频率分为不同区段,再分析不同频段内故障暂态特征。
补充资料：相频特性
分子式：
CAS号：
性质：在复平面上以频率特性G(jω)相位φ(ω)为纵坐标，频率为横坐标的图称相频特性。
CAS号：
性质：在复平面上以频率特性G(jω)相位φ(ω)为纵坐标，频率为横坐标的图称相频特性。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条