Feedback loop consists of a voltage divider an effective value demodulation circuit and an AD converting circuit .

反馈回路主要由分 压电路， 有效 值检波电路和AD转换电路三部分组成。

This design can measure effective value of voltage and effective value of electric current active power reactive power power factor effective value of voltage base-wave total partial-wave and so on .

本设计可测量 电压 有效 值、电流 有效 值、有功功率、无功功率、功率因数、电压基波及总谐波的有效值等一系列参数；

The outer-loop adopting the voltage effective value feedback regulates voltage output and reduces the steady error of output voltage .

外环采用 电压 有效 值反馈，调节输出电压，内环采用电感电流瞬时值反馈，提高系统动静态特性，并对采用该方案的级联逆变器进行了全面分析。

GPS-based phasor measurement unit ( PMU ) can measure the voltage phasor directly including the effective value and phase angle .

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。

A Design of Measurement System of the Voltage Effective Value for Three-phase Gyroscope Motor

三相陀螺电机 电压 有效 值的测量系统设计

The voltage effective value was figured out by mean square .

再通过其均方计算出 电压 有效 值。

Theoretically the net voltage fluctuation and the change of secondary loop impedance is shown by the effective value of welding current and by compensating the constant current control is realized .

理论分析表明：焊接电流 有效 值反映了网 压波动和负载 功率因数 角的变化情况，对二者进行补偿，可实现恒流控制。

Departing from calculated formula of periodic current and voltage effective value two frequently sinusoidal pulse waves in electronic circuit have been analyzed . The analysis process is simple . This paper has some reference value for solving technical problem .

本文从周期性电流和 电压 有效 值的计算公式出发，分析了电子电路中两种常见的正弦脉冲波，分析过程简单明了，对解决有关技术问题有一定借鉴价值。