摘要
坦克火炮微振动信号对于火炮的射击精度具有重要影响。针对传统光纤光栅(fiber Bragg grating,FBG)加速度传感器精度低、灵敏度小等问题,提出一种基于相移光栅(phase shift-fiber Bragg grating,PS-FBG)的高精度坦克火炮加速度传感器。PS-FBG和普通FBG串联形成级联光栅,并与振子相连组成弹簧质量系统。PS-FBG相移点的存在显著降低了级联光栅反射光谱的3 dB带宽,进而大幅提高了光谱测量精度。实验结果显示,在0.01~0.07 g的加速度激励下,PS-FBG级联光栅传感器可有效识别并还原微振动信号,而传统FBG传感器在加速度小于0.03 g时已经无法识别。坦克车载测试结果显示,所提出的传感器有效提取了发动机怠速状态和正常行驶状态下的微振动信号。传感器在瞬态冲击响应下体现出良好的动态性能,并通过并联匹配FBG,有效减弱了环境温度变化导致的测量误差。
The micro vibration signal of tank artillery has a significant impact on the firing accuracy of the artillery.A high-precision acceleration sensor for tank artillery based on phase shift-fiber brag grating(PS-FBG)is proposed to address the issues of low accuracy and low sensitivity of traditional fiber Brag grating(FBG)acceleration sensors.The phase shift grating is connected in series with a regular FBG to form a cascaded grating,and connected to the oscillator to form a spring mass system.The presence of grid phase shift of PS-FBG significantly reduces 3 dB bandwidth of the cascaded grating reflection spectrum,thereby greatly improving the spectral measurement accuracy.The experimental results show that under acceleration excitation of 0.01-0.07 g,the PS-FBG cascaded grating sensor can effectively recognize and restore micro vibration signals,while traditional FBG sensors cannot recognize micro vibration signals with the acceleration below 0.03 g.The tank vehicular test results show that the proposed sensor can effectively extract the micro vibration signals of the engine under idle and normal driving conditions.The sensor exhibits super dynamic performance under transient shock response,and effectively reduces measurement errors caused by environmental temperature changes through parallel matching with FBG.
作者
陆锋
张俊生
刘青芳
王建国
LU Feng;ZHANG Junsheng;LIU Qingfang;WANG Jianguo(Department of Electronic Engineering,Taiyuan Institute of Technology,Taiyuan 030008,China)
出处
《火力与指挥控制》
北大核心
2025年第1期169-174,共6页
Fire Control & Command Control
基金
山西省高等学校科技创新项目(2020L0624)
山西省高等学校教学改革创新项目(J20221104)
教育部产学合作协同育人项目(202102443002)。
关键词
加速度
传感器
相移光栅
火炮
精度
acceleration
sensor
phase shift grating
artillery
accuracy
