CAJ | 학술논문

为能依据振动检测要求合理选择 FBG(光纤布拉格光栅)振动解调方案，提高 FBG振动解调系统性能，文章深入剖析了FBG光强式振动解调系统中影响解调性能的各种因素，通过 MATLAB软件对匹配光栅法、边缘滤波法及激光匹配法的系统灵敏度和解调范围进行了对比，分析了改变 FBG 3 dB带宽时三种方法灵敏度和解调范围的变化趋势，分析结果对合理搭建FBG振动解调系统具有参考价值。
위능의거진동검측요구합리선택 FBG(광섬포랍격광책)진동해조방안，제고 FBG진동해조계통성능，문장심입부석료FBG광강식진동해조계통중영향해조성능적각충인소，통과 MATLAB연건대필배광책법、변연려파법급격광필배법적계통령민도화해조범위진행료대비，분석료개변 FBG 3 dB대관시삼충방법령민도화해조범위적변화추세，분석결과대합리탑건FBG진동해조계통구유삼고개치。
In order to select a rational Fiber Bragg Grating (FBG)vibration demodulation scheme in accordance with the vibra-tion detection requirements and enhance the performance of FBG vibration sensing demodulation systems,this paper dissects in depth various factors affecting the system demodulation performances,compares the system sensitivity and demodulation range of matching FBG method,edge filter method and laser matching method by using MATLAB software and analyses the varia-tion trends of the sensitivity and demodulation range of these three methods when 3 dB bandwidth of FBG is changed.The re-sults have some value of reference for rationally building an FBG vibration sensing demodulation system.