Through collecting vibration signal and analyzing it in the frequency domain in the condition of changing parameter cutting, a single self power spectrum is hard to detect tool breakage effectively.
在变切削参数的加工工况下，通过对振动信号的采集和频域处理，发现采用单一的自功率谱方法难以有效检测出刀片破损。
Frequency is one of the most important performance parameter of military power system.
频率是军用电力系统最重要的供电质量指标之一。
The UPFC power frequency model with its main and supplementary control block diagrams and the formulation for FDC parameter optimization are presented.
建立了UPFC的频域模型，给出了主控制和辅助控制的框图，推导了模糊阻尼控制器参数优化的公式。
The power distribution of heavy oil well along well-bore in medium-frequency heating is investigated by means of distributing parameter circuit model.
用分布参数电路模型对稠油油井中频加热功率沿井深的分布进行了深入研究。
Note: this parameter is used to determine the power frequency overvoltage withstanding ability of an MOV.
注：本参数用于确定MOV的功频过电压耐受能力。
Secondly, two classical models of distributed parameter DLSP: power frequency model and time-domain model. Based on these two models dynamic phasor model has been deduced.
其次，本文分析了同杆双回线分布参数的两种经典模型：工频量模型和时域模型，并在此基础上推导了时变动态相量模型。
The electromagnetic parameter of power transmission include: power frequency electrical field, power frequency magnetic field, radio inference (ri) and audible noise (an).
输电线路的电磁环境参数主要包括工频电场、工频磁场、无线电干扰和可听噪声四个方面。
The frequency variation of electrical power system would have effect the veracity of electric parameter evaluation, and possibility effect characteristic of automatic equipment.
工频频率变化会影响电量计算的准确性，甚至会影响到电力自动化装置的工作性能。
In order to improve the power parameter further, the intermediate frequency inversion of an electric voltage power type series resonance and frequency trace technique are adopted.
为使系统的功率因数较高，采用电压源型负载串联谐振中频逆变器和频率跟踪技术。
After control method of special electromagnetism parameter is proposed, we introduce the basis chosen of SPWM frequency conversion & IGBT power module.
接着介绍了SPWM交—直—交变频的控制方案和选用IGBT电力模块的依据。
Parameter optimization of power system stabilizers is very important to restrain the low-frequency oscillation of multi-machine systems.
电力系统稳定器参数的优化对于抑制多机电力系统低频振荡具有非常重要的意义。
There is provided a method for measuring a parameter of a power frequency current being carried by a power line.
本发明提供一种测量由电力线承载的工频电流的参数的方法。
There is provided a method for measuring a parameter of a power frequency current being carried by a power line.
本发明提供一种测量由电力线承载的工频电流的参数的方法。
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