再通过其均方计算出电压有效值。
基于GPS的相量测量装置(PMU)可以直接测得节点电压相量，包括电压有效值和相角。
GPS-based phasor measurement unit (PMU) can measure the voltage phasor directly, including the effective value and phase Angle.
PL 3223提供若干间接参数，依此计算出电压有效值、电流有效值、线电压频率等参量。
PL3223 supplies several indirect parameters, which are used to calculate voltage RMS, current RMS, frequency of the line voltage and so on.
该电源采用数/模混合控制及重复控制方法，数字部分实现高精度的波形发生器和电压有效值控制；
The power supply adopts D/A mixed control and repetitive control. The digital part realizes the high precise waveform generator and the control based on voltage virtual value.
为了对比一个已知直流参考的未知交流信号热效应，计量人员可以确定在一段时间内直流的交流有效值(电压或电流)。
By comparing the heating effect of an unknown AC signal to that from a known DC reference, metrologists can determine the RMS AC quantity (voltage or current) in terms of the DC quantity.
电压和电流采用有效值测量，保证数据更准确。采用循环显示及具备提示性显示方式，显示内容多。
Use effective value to figure the voltage and the current which ensure higher accuracy. Display in a cycle with prompt to accommodate better content.
对于交流电压测量﹐利用有效值转换电路或精密整流器电路将交流信号转换成直流电压。
For AC voltage measurement, an RMS converter circuit or a precision rectifier circuit convert the AC signal into a DC voltage.
为了满足实时检测要求，研究了计算电压、电流有效值和功率因数的快速演算法。
In order to satisfy the real - time measurement, we studied the fast arithmetic of virtual value of voltage and current, power factor.
伏特量交流电路中电压与电流的有效值以及电流与电压之间相位角的余弦之乘积。
The product of the effective values of the voltage and current with the cosine of the phase Angle between current and voltage in an alternating-current circuit.
在此基础上研究了电能质量监测理论，详细介绍了电压电流有效值、功率、三相不平衡度、谐波和闪变的数字测量方法。
Based on this requirement, this paper introduced the theory of power quality monitoring, include RMS of voltage and current, power, three-phase unbalance, harmonic and flicker.
本文介绍了工作于交流电网中线性负载有效值电压线性控制器的设计。
This paper discusses the design method of an effective voltage linearity controller of linear load working in AC power networks.
试验结果表明，限流器可以有效限制短路电流的峰值和有效值，对于母线电压跌落也有较好的抑制效果。
Experimental results showed that the fault current limiter was effective in curbing the short-circuit current peak and RMS, and it also performed well on inhibiting the bus voltage drop.
讨论了对含谐波的正弦电压(电流)采样值直接进行小波变换计算基波、谐波电压(电流)的有效值及频率的方法。
It's discussed that the method of RMS and frequency measurements directly from the wavelet transform data associated with each sampling sine voltage (current) element pair containing harmonic.
计算高压配电线路得出的三相电压、三相电流有效值误差小于0.5%。
The errorless of three-phase voltage and current is less than 0.5 percent.
本文介绍了一种基于单片机和测量电压真有效值方案设计的智能数字交流毫伏表。
This paper introduces a kind of Intelligent Digital AC Millivoltmeter that is based on the Signal-chip Microcomputer and the design of voltage's real virtual value measuring.
介绍了一种基于单片机和测量电压真有效值方案设计的智能数字交流毫伏表。
This paper introduces a kind of intelligent digital AC millivoltmeter that is based on the chip microcomputer and the design of voltage's real virtual value measuring.
根据数字万用表的测试原理，提出了用其测量非正弦波电压平均值、有效值及峰值的简单实用的方法。
According to the principles of numeration table, the author puts forward simple but practical methods of how to measure the mean values, virtual values and peak values of non sine waves.
本文在数字信号处理理论的基础上，通过对电压和电流信号特性的分析，研究了一种新的计算电压和电流有效值的体系结构。
On the basis of the digital signal processing theory and the characters of voltage and current, the system structure of a kind of new voltage (current) RMS calculator is proposed.
电压、电流真有效值变换精度高、速度快，电压真有效值负反馈闭环控制主回路网压波动补偿精度高；
The RMS converters of voltage and current have the advantages of high speed and precision, and with the feedback of RMS, the fluctuate of power voltage can be compensated at high precision.
逆变控制采用SPWM方式，由数字PID调节器实现输出电压瞬时值反馈，并采用有效值调节实现稳压。
SPWM method is adopted to control the inverter model. Digital PID adjuster is used to realize voltage loop and the value modulation is used to maintain the value of output voltage.
所设计的电网参数测试仪可以测量功率因数、电压和电流的有效值、瞬时值等参数。
The tester designed can be used to measure the parameters, such as power factor, effective value of voltage and current, instantaneous value, etc.
智能型真有效值电压监测仪，采用AT89C52单片机，在一个周期内对电网电压等间距采样N次。
Singlechip AT89C52 was adopted by intelligent real available value voltage-monitoring apparatus to sample N times for the electrical network voltage between equal spaces in one cycle.
图25是一个平均值输出，有效值刻度的交流电压表头放大电路。
The circuit shown in Figure 25 is the heart of an average reading, rms calibrated AC voltmeter.
图25是一个平均值输出，有效值刻度的交流电压表头放大电路。
The circuit shown in Figure 25 is the heart of an average reading, rms calibrated AC voltmeter.
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