|
|
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.
|
|
|
|
|
[1]ISO. ISO 16063-13-2001(E) Methods for the calibration of vibration and shock transducers-Part 13: Primary shock calibration using laser[S].2001.
[2]国家质量技术监督检验检疫总局.GB/T 20485.13—2007振动与冲击传感器校准方法—第13部分:激光干涉法冲击绝对校准[S].2007.
[3]国家技术监督局.JJG 791—1992 冲击力法冲击加速度校准装置[S].1992.
[4]国家技术监督局.JJG 632—1989 动态力传感器[S].1989.
[5]国家质量技术监督局.JJG 497—2000 碰撞试验台[S].2000.
[6]ISO. ISO 16063-1-1998(E) Methods for the calibration of vibration and shock transducers-Part 1: Basic Concepts[S].1998.
[7]IEC. IEC Standard, 469-2 Pulse techniques and apparatus, (part 2: Pulse measurement and analysis, general considerations) [S].1987.
[8]国家技术监督局.GB 9318—1988 脉冲信号发生器测试方法[S].1988.
[9]梁志国,李新良,连大鸿.激光干涉法一次冲击加速度校准[J].电子测量与仪器学报,2006,20(1):68-72.
[10]国家质量技术监督检验检疫总局.JJF 1153—2006 冲击加速度计(绝对法)校准规范[S].2006.
[11]国家质量技术监督检验检疫总局.JJG 233—2008 压电加速度计检定规程[S].2008. |
|
|
|