Application of EMD-ICA and Demodulation to Early Failure Diagnosis of Rotor Systems
Vibration signals generated by complex rotor system were usually with dispersed frequency distribution,strong non-stationarity,and complex components.So it is very difficult to extract the early fault information from the vibration signals using traditional signal processing methods such as wavelet decomposition.This paper presents a fault information extraction approach based on combined EMD-ICA and Hilbert envelope demodulation according to the crack fault problems of gear hubs which occurred times in reducers of a type of turboprop engines.With this approach,vibration signals acquired under both normal and fault gear hub conditions were comparatively analyzed.The result shows that with this method we can effectively get the information of modulated signals which can clearly indicate the fault status.
Rotor system Early fault EMD Independent component analysis Demodulation analysis
Zilong Xie Bolin Shang Ruixiang Zhou
Air Force Engineering University, Xi’an, China
国际会议
西安
英文
361-372
2013-11-25（万方平台首次上网日期，不代表论文的发表时间）