【摘要】 超声无损检测中 ,特定的缺陷回波一般都具有一定的相关性 ,因而可利用自适应滤波来增强缺陷回波信号。介绍自适应滤波的结构与最小均方 (LMS)算法 ,从超声检测应用结果来看 ,该方法有较好的特性与前景更多还原

【Abstract】 In the process of ultrasonic nondestructive testing, the flaw echo signals in A scan are correlative. Thus, it is possible to enhance flaw echo signals by means of adaptive filtering. The adaptive filter structure and LMS algorithm are described. From the results obtained in ultrasonic testing, it can be seen that the method has better performance and prospect.更多还原