王成国，常博文，王良斌
(大连中车柴油机有限公司，辽宁 大连 116022)
摘要：在生产与试验中，正弦波交流电信号通过非线性负载后波形会发生畸变。对于此类非正弦波交流电有效值的测量，使用普通的测量仪表测量会导致较大的测量误差。为使测量不受波形影响，普通的测量仪表已经不能满足测量要求，在越来越多的场合已经使用真有效值测量设备进行测量。本研究结合发电机组试验设备在实践中出现的问题，对真有效值的测量应用进行了分析和研究。
关键词：有效值；平均值；真有效值
Abstract: During the production and test, the sine wave alternating current
signal will distort according to the nonlinear load. For the measurement of the
effective value of non-sinusoidal AC current, it is very difficult to measure with
traditional measuring instrument, and the traditional measuring instrument
cannot meet the measurement requirement. In order to assure the measurement not
affected by the waveform, more and more occasions have used the true RMS
measurement equipment.
Key Words: RMS; average value; true RMS
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