CAJ | 학술논문

针对目前动态校准装置难以安全产生窄脉冲激励信号的问题，基于Hopkinson压杆技术，以压缩空气作为激励源，采用子弹撞击杆的方式，提出了一种可以产生6~10μs窄脉冲校准系统。该系统选用600 mm ×10 mm的钛合金Hopkinson杆，使用应变片和轴向激光干涉仪同时测量获取窄脉冲信号。利用该系统进行了动态校准实验，实验结果表明，该系统产生的窄脉冲可充分激励起8309的谐振频率，通过幅频特性曲线得其工作频带。
침대목전동태교준장치난이안전산생착맥충격려신호적문제，기우Hopkinson압간기술，이압축공기작위격려원，채용자탄당격간적방식，제출료일충가이산생6~10μs착맥충교준계통。해계통선용600 mm ×10 mm적태합금Hopkinson간，사용응변편화축향격광간섭의동시측량획취착맥충신호。이용해계통진행료동태교준실험，실험결과표명，해계통산생적착맥충가충분격려기8309적해진빈솔，통과폭빈특성곡선득기공작빈대。
present dynamic calibration deviceproduce narrow pulse excitation signal, based on Hopkinson pressure bar technique, com-pressed air as a source of motivationthe way of bullet, a kind of calibration system that can produce 6~10 μs narrow pulse. The system 600 mm × 10 mm titanium alloy Hopkinson bar, strain gauge and axial laser interferometer measurement for narrow pulse signal at the same time. his system dynamic calibration experiment, the experimental results show that the system can fully motivate resonance frequency of the acceleration sensor 8309, its working frequency band obtained through the amplitude-frequency characteristic curve.