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This paper presents a rolling bearing fault diagnosis approach based on the combination of Ensemble Empirical Mode Decomposition (EEMD), Information Entropy (IE) and Support Vector Machine (SVM). The horizontal and vertical vibration signals of the bearings are utilized as the input of the method. First, the signals, after preprocess, are decomposed into certain number of intrinsic mode functions...
Marine shafting system is the indispensable component of a ship power plant. As the "heart" of the ship, marine power plant provides propulsion and secondary energy for normal navigation, operations, combats, and other needs of the ship it. Compared with the classical vibration analysis and the oil analysis theory, the method based on power flow is easier to explain the energy distribution...
Ship shafting system is the indispensable component of a ship power plant. The primary function of a ship shafting system is to carry out energy transfer from marine engine to propeller, transmit axial thrust produced by the rotation of propeller to the hull, and drive the ship ahead. Vibrational power flow combines the effects of force and velocity amplitudes as well as the irrelative phase angle...
In order to solve the SINS active vibration control, propose a kind of flexible plate used in SINS of intelligent structure matrix of active vibration control method. This method in establishing flexible sheet on the basis of dynamic model, value-based modal analysis of force to extract the necessary space model reduction mode, based on modal force of piezoelectric element determination criterion...
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