Method for measuring the effective value and initial phase of sinusoidally variable alternating voltage

摘要

in the way and the measured instantaneous values of voltage sinusoidalnie four variable in equal intervals smaller than 1 / 2 period t voltage receiving respectively results u1 = u (t1), u = u (t2), u3 = u (t3), u4 = u (t4), where t1, t2, t3, t4 are the times of measurements.on the basis of the measurement results is calculated value of the auxiliary parameter? and then, calculate the value of an initial voltage and phase sinusoidalnie variable.