A set of improved signal processing algorithms and their application in measuring alternating electrical parameters by synchronous sampling

The author proposes a set of improved signal processing algorithms which are based on linear interpolation and are suitable for the measurement of alternating electrical parameters. Theoretical analyses and experiment results show that, if time deviation is within one sample interval, the improved algorithms can diminish the truncation errors greatly without using additional hardware, whereas the traditional algorithms probably cause intolerable errors because they are unable to reflect the signal distribution properly in a signal period.<>