一种加窗重叠信号平滑连接方法及其在振动信号预处理中的应用

OLA SIGNAL SMOOTH LINKING METHOD AND ITS APPLICATION IN VIBRATION SIGNAL PRE-PROCESSING

分析了道路模拟试验振动信号预处理过程中需要解决的信号平滑连接问题必要性,提出了采用加窗重叠的方法进行信号平滑连接。并通过对加窗重叠过程的分析,确定了所采用的窗函数类型。实验结果表明,该方法能够较好地进行信号的平滑连接。

The necessity of signal smooth linking in the vibration signal pre-processing of road simulation is analyzed, and OLA(overlap-add) method is proposed to solve the problem. Then the type of window function is determined by analyzing the OLA processing procedure. The test results show the validity of the processing method.