Wavelet Packet Quantization Analysis Technique in Real-Time Feature Extraction and Condition Monitoring of Quayside Container Crane Motor Based on EMD

Based on the introduction of the Empirical Mode Decomposition (EMD), Wavelet Packet Quantization Analysis Technology is presented in this paper. According to the features including heavy-load, high-speed and huge-impact of the real-time signals of the quayside container crane, the feature information can be extracted effectively by means of this technique. The application to the large-scale crane belonged to a Shanghai container-company shows that this technique is an on-Line and real-time method for the feature extraction and condition monitoring of the crane.