Underdetermined Blind Source Separation of Aeroengine Vibration Signal Mixtures
Zhang Yu · Journal of Propulsion Technology · 2014
Aimed at the problem that the conventional underdetermined blind source separation(UBSS) methods are difficult to deal with the delayed aero-engine vibration mixture signals,an underdetermined blind source separation with delays was researched by using the sparse component analysis.The number of sources and attenuation matrix were estimated by clustering mixture signals magnitude on the line direction.The delay matrix was obtained by recovering the cluster of signals real.The experiment results show that the different vibration sources of aero-engine vibration mixture signals were separated effectively under the condition that the number of sensors is less than that of sources.