Blind Separation of Aviation Engine Vibration Signal Based on Cascaded Structure
MA Jian-cang · Measurement & Control Technology · 2011
The cascade type blind separation method has the advantages such as fast algorithm,little redundancy,simple unit-structure and easy to realize,so it is widely applied in blind signal processing field.The use of this structure in aviation engine vibration signal blind separation was researched.At first,the feasibility and superiority of the cascade extraction structure,and the optimization algorithm of extraction and deflation units were introduced.After,a real aviation engine vibration signal was separated by using the cascade type blind extraction structure,then power spectrum analysis for the separated vibration signal was done,at last the cause of excessive vibration fault was diagnosed.Simulation results demonstrate the effectiveness of the proposed method,and it can be used in aviation engine vibration signal blind separation.