An optimized bearing parameter identification approach from vibration response spectra

摘要: In the present work, an effective identification methodology bearing dynamic parameters using measured vibration responses at is proposed. The flexible rotor analyzed by finite element beam model with nonlinear hydrodynamic forces due to floating ring supports. frequency domain different operating speeds are initially obtained in both lateral directions. error function formulated as average difference amplitudes of two displacements a node known reference signals over range. design variables speed dependent direct and cross-coupled stiffness damping bearing. With side constraints on variables, minimized modified particle swarm optimization scheme. accuracy approach tested noisy input signals.