Analysis and Simulation of Errors in Software Synchronous Sampling in Periodic-Signal Measurement

摘要

Software synchronous sampling is widely employed in periodic signal measurement, but measure- ment errors occur very commonly. This paper analyses the cause of the errors, deduces the mathematical model for the measurement errors in measuring RMS voltage, RMS current and active power using the software syn- chronous sampling method. Some measures to reduce the errors are put forward by simulating.