|
|
|
| Investigation of Shock Calibration Using Laser Interferometry |
| HU Hong-bo,YU Mei |
| National Institute of Metrology, Beijing 100029, China |
|
|
|
|
Abstract The primary shock calibration method using laser interferometry is presented, the method is based on the standard of ISO 16063-13. The characteristics of two typical shock exciters are introduced, including generated shock waveform. After digitizing of the phase-modulated signals at the output of a homodyne or heterodyne interferometer, the time-dependent displacement is reconstructed on the basis of the principle coherent demodulation. The data processing steps can efficiently suppress deterministic and stochastic disturbing quantities. Computer simulations and experimental investigations proved that the peak value and the spectral components of shock pulse can be measured with expanded uncertainties of less than 1%(k=2).
|
|
|
|
|
|
［1］于梅,胡红波,左爱斌,等. 新一代冲击加速度国家基准装置的研究与建立［J］. 振动与冲击,2013,32（10）:124-128.
［2］ISO 2001 International Standard 16063-13 Methods for the calibration of vibration and shock transducers-Part 13: Primary shock calibration using laser interferometry［S］.2001.
［3］梁志国,李新良,孙璟宇,等. 基于激光干涉法的一次冲击微分加速度动态特性校准［J］.计量学报,2005,26（1）:34-39.
［4］赵晓东,裴东兴,范锦彪.高g值加速度计激光干涉校准及信号解算方法［J］.传感技术学报,2009,22（11）:1602-1605.
［5］胡红波,于梅. Hopkinson杆冲击激励系统的原理与应用［J］. 计量技术,2011,（2）:36-38.
［6］胡红波,于梅. 绝对法冲击校准激光干涉信号处理技术［J］.计量技术,2013,（1）:46-50.
［7］Rojas-Ramirez S,Elias-Juarez A A, Schlaak H J, et al. Shock measurements with a homodyne interferometer for accelerometer calibration［C］//In Forth International Conference on vibration Measurements by laser Techniques: Advances and Applications, Enrico Primo Tomasini:SPIE,4072,2000:146-157.
［8］Link A,von Marterns H J,Wobinski W, et al. Recent advances in vibration and shock measurements and calibrations using laser interferometry［C］//Sixth International Conference on Vibration Measurements by Laser Techniques: advances and applications : 22-25 June 2004, Ancona, Italy ; Proceedings of SPIE: 5503,2004,1-19.
［9］胡红波,于梅. 零差激光干涉仪正交相位误差的分析［J］.光电工程,2012,39（12）:55-62.
［10］胡广书.数字信号处理 理论、算法与实现(第2版)［M］.清华大学出版社,北京,2003.
［11］BIPM, IEC, IFCC, ISO, IUPAC, IUPAP and OIML, Evaluation of Measurement Data-Supplement 1 to the “Guide to the Expression of Uncertainty in Measurement”-Propagation of Distributions using a Monte Carlo Method［S］.2008.
［12］vonMartens H J,Taubner A,Wabinski W, et al. Laser interferometry-tool and object in vibration and shock calibrations［C］//Proceedings 3nd International Conference on vibration Measurements by laser Techniques. Ancona, Italy,1998. |
|
|
|
2015, Vol. 36 
