基于SROPL的金属管道损伤谐波检测方法研究

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为解决金属管道损伤检测问题,提出一种非接触式谐波检测方法和目标信号辨识算法。首先利用调频载波构建谐波激励信号,并采用高灵敏度隧道磁阻(TMR)矢量传感器阵列进行信号采集。然后采用变尺度自适应时域随机共振(SR)增强目标信号能量,并引入量子遗传算法(QGA)对系统多参数寻优。最后通过正交锁相(OPL)与阵列融合方法抑制激励背景场,从而识别损伤源信号。建立仿真模型和室内实验平台对算法进行验证,并分析比较典型因素的影响效果。结果表明,该方法能够有效检测管道损伤并提取目标信号。
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