CAJ | 학술논문

基于 ISO 16063-13冲击绝对法校准标准，介绍了基于砧体碰撞的低 g 值和基于 Hopkinson 杆的高 g 值冲击激励机械系统的特点，并模拟了2套系统产生的冲击波形，通过解调零差和外差激光干涉仪的输出信号重构了机械激励系统产生的随时间变化的位移信号，信号处理算法有效地抑制了确定和随机噪声，从而准确地确定了加速度信号的峰值与频谱，仿真、实验以及与绝对法振动校准比较的结果表明，其测量扩展不确定度小于1%（k =2）。
기우 ISO 16063-13충격절대법교준표준，개소료기우침체팽당적저 g 치화기우 Hopkinson 간적고 g 치충격격려궤계계통적특점，병모의료2투계통산생적충격파형，통과해조령차화외차격광간섭의적수출신호중구료궤계격려계통산생적수시간변화적위이신호，신호처리산법유효지억제료학정화수궤조성，종이준학지학정료가속도신호적봉치여빈보，방진、실험이급여절대법진동교준비교적결과표명，기측량확전불학정도소우1%（k =2）。
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 ezciters 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 ezperimental investigations proved that the peak value and the spectral components of shock pulse can be measured with ezpanded uncertainties of less than 1%(k = 2).