A Novel Calculation Method for Peak of Impulse Waveforms Based on Parabola Curve-fitting
LIANG Zhi-guo1,LI Xin-liang1,ZHU Zhen-yu1,2
1.Changcheng Institute of Metrology and Measurement, Beijing 100095, China;
2.College of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China
Abstract A novel calculation method based on parabola curve-fitting is presented for peak calculation. Through taking out the waveform near impulse peak from acquisition data, the impulse peak value is got by using parabola curve-fitting. The method has the specialties of easy to use, good convergence, and so on. By the error of curve-fitting, the different curve-fitting results can be compared. In this method, the sampling data are used to calculate the impulse peak directly, so, there is no affects and influence of filters, and it can attain the more precise and impersonal peak results. In a group of impulse calibration experiments, and through compared with traditional method, both the correctness and the feasibility of the pulse peak calculation method are proved.
LIANG Zhi-guo,LI Xin-liang,ZHU Zhen-yu. A Novel Calculation Method for Peak of Impulse Waveforms Based on Parabola Curve-fitting[J]. Acta Metrologica Sinica, 2015, 36(3): 309-313.
2015, Vol. 36 
