SWMC Fast Layer-Identification Algorithm of Penetration Acceleration Signal

摘要

The signal achieved by accelerator in the process of the hard-layer penetration is a typical non-stationary random signal with very large peak pulse amplitude, quite short action time and blurry local characteristic. In addition, the high frequency contained in the signal is so abundant that the traditional time-frequency analysis and non-parameter modeling methods are difficult to effectively analyze and process this kind of signal. On the basis of the analyzing the components of the penetration signal, the EEMD algorithm and Hilbert-Huang transform are used to abstract the instantaneous characteristic of the multi-layer penetration acceleration signal, and the characteristic of penetrating layer is achieved in the decomposed IMF. According to the characteristic, a fast SWMC algorithm is studied to real-time identify the layer characteristic for precise burst control. Finally, the accuracy of the algorithm is well verified in the SIMULINK simulation platform.