Effect comparative analysis of wavelet reconstruction and EMD data processing in continuous shock signal interference

When the mechanical structure is subjected to a very short interval of continuous shock, the shocked machine will oscillate, the shocked force value cannot be measured accurately, the later shock force value will be affected by the former shock force. In this paper, in order to eliminate the interference caused by mechanical self-oscillation in the shock force test, two signal processing algorithms were adopted, which conclude wavelet reconstruction algorithm and empirical mode decomposition (EMD). Through the analysis in time domain and frequency domain, it is found that both algorithms can eliminate the interference effectively, which caused by mechanical self-oscillation. These processing effects are the same.