A novel calculation method for peak of impulse waveforms based on partial sinusoidal curve-fitting
Liang Zhiguo1 Li Xinliang1 Zhu Zhenyu1,2
Author information+
1. National Key Laboratory of Metrology and Calibration Technology, Changcheng Institute of Metrology and Measurement, Beijing, 1000952. College of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin 300072
Aiming at the peak calculation of half-sine style impulse, a novel calculation method based on partial sinusoidal curve-fitting is presented. It is that through taking out the half-sine part near impulse peak from acquisition data, then using partial sinusoidal curve-fitting to get the impulse peak value. The method has the specialties of easy to use, good convergence, and so on. Through the curve-fitting error, one can compare the different curve-fitting results, and know which is better. This method uses the sampling data to calculate the impulse peak directly, without any filter for pre-pressing, there is no affects and influence of filter, so, it can attain the more precise and more 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. The method in this paper can be applied to the impulse peak measurement and analysis.
Liang Zhiguo Li Xinliang Zhu Zhenyu;.
A novel calculation method for peak of impulse waveforms based on partial sinusoidal curve-fitting[J]. Journal of Vibration and Shock, 2015, 34(1): 49-52
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