Abstract：Staircase waveform is a bridge from DC to AC measurement, and will be a potential bridge from static to dynamic state. A concept of piecewise sampling is proposed. Under this concept the characteristics of staircase waveform is analyzed. The measurement approach for the staircase waveform is discussed with the experiments to overcome the impact from the transient effect and the Gibbs phenomenon. For a typical analogue-to-digital converter with antialiasing filter the selection of the parameters of piecewise sampling is presented for the precise measurement. The experimental results indicate that the impact from fluctuation of samples values to the fundamental amplitude and the root mean square is greatly reduced by the piecewise sampling.
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2019, Vol. 40 
