Study on an Improved HVD Signal Feature Extraction Method and Its Application
SHI Pei-ming1,FAN Ya-fei1,HAN Dong-ying2
1. Key Laboratory of Measurement Technology and Instrument of Hebei Province, Yanshan University,Qinhuangdao, Hebei 066004, China
2. School of Vehicles and Energy, Yanshan University, Qinhuangdao, Hebei 066004, China
Abstract：Hilbert vibration decomposition (HVD) is widely used in fault diagnosis of rotating machinery such as fans and gearboxes.However, it has two problems to be solved: (1) the parameters of the algorithm need to be set empirically or determined manually; (2) how to avoid modal mixing by selecting sensitive intrinsic mode function (IMF) components.In view of the above two problems, an improved HVD algorithm is proposed, which effectively solves the problem of parameter setting and model aliasing of Hilbert vibration decomposition.The proposed method is described as follows: firstly, two parameters of HVD algorithm are optimized by particle swarm optimization (PSO).In addition, a new evaluation metric-Max envelope kurtosis mean (MEKM) is proposed as the objective function of the PSO optimization algorithm, and Max envelope kurtosis (MEK) is introduced to adaptively select the sensitive IMF component. Finally, the selected reconstructed signals are analyzed by square envelope spectrum and fault characteristic frequencies are extracted to identify wind turbine equipment fault types.The effectiveness of the proposed improved HVD method is verified by a simulated signal, experimental signal and wind turbine applied example analysis.
时培明,范雅斐,韩东颖. 一种改进HVD信号特征提取方法及应用研究[J]. 计量学报, 2022, 43(7): 920-926.
SHI Pei-ming,FAN Ya-fei,HAN Dong-ying. Study on an Improved HVD Signal Feature Extraction Method and Its Application. Acta Metrologica Sinica, 2022, 43(7): 920-926.
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2022, Vol. 43 
