Abstract Aimed at the time domain integral problem for vibration test, a kind of combined Simpson integral method is presented. The vibration test data are divided into the odd sequence and the even sequence, and the integral calculation recursive formula for each point is drawn through combining Newton Leibniz formula and Simpson formula. The whole integral waveform consist of the two integral sequences. The verification test is carried out through the earthquake data provided by Matlab, and the result illustrates the effectiveness of the method. The method has high computing precision, its truncation error reach 4 order infinitesimal of sampling step, and is suitable for vibration test application.
XU Xiao-hong,NI Chun-feng,YAN Xiao-qing. Time Domain Integral Method for Vibration Test Based on Combined Simpson Integral[J]. Acta Metrologica Sinica, 2020, 41(6): 704-709.
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2020, Vol. 41 
