Method for obtaining an electrical measurement quantity which is proportional to the square of the rms value of an electrical signal

摘要

In this method, values sampled from the electrical voltage are formed, squared and then a sum is formed. To improve such a method to the extent that the electrical measurement quantity also largely corresponds to the square of the rms value in the case of an electrical voltage in the form of a stochastic signal, the squared values are given increasingly lower weights in accordance with their distance in time from the measurement value formation, and added to form a sum for forming the measurement quantity. <IMAGE>