... 13 01 2012 13 01 2012 beams (structures) differential algebraic equations linear synchronous motors motion control multidimensional systems nonlinear systems periodic control piezoelectric actuators servomechanisms structural acoustics vibration control vibrations...

... 09 01 2012 09 01 2012 damping elastic constants nonlinear acoustics nonlinear systems shock absorbers structural acoustics nonlinear stiffening nonlinear damping enhancement nonlinear energy sink It is well established that stiffness nonlinearity can lead...

... system, the unstable ranges appear in the vicinity of A and C due to the parametric excitation. However, in the nonlinear system discussed here, unstable oscillations converge to constant amplitudes corresponding to limit cycles due to the nonlinear spring characteristics. (3) The amplitude...

... , 129 ( 1 ), pp. 213 – 219 . Pissanetzky , S. , 1984 , Sparse Matrix Technology , Academic , London , Chaps. 1 and 9. 28 11 2006 17 10 2007 03 04 2008 compressors finite difference methods finite element analysis lubrication machine bearings nonlinear...

... on Linear Controllability and Observability Norms, an Invariant Manifold Approach ,” J. Sound Vib. 0022-460X , 199 ( 3 ), pp. 417 – 429 . The Math Works Inc. , 2002 , Using MATLAB, 3 Apple Hill Dr., Natick, MA 01760. Gopinathan , A. , 1999 , “ Robust Nonlinear System Identification...

... and (for nonlinear systems) periodically modulated nonlinearities via the Lyapunov-Floquet transformation. Then a master-slave separation of degrees of freedom is used and a relation between the slave coordinates and the master coordinates is constructed. Two possible order reduction techniques are suggested...

...Chung-Jen Lu Under proper working conditions, a ball-type automatic balancer can effectively reduce the imbalance vibrations of an optical disk drive. The proper working conditions can be determined by a stability analysis of the equilibrium states of the nonlinear system formed by the rotating...

...Muhammad Haroon; Douglas E. Adams; Yiu Wah Luk Conventional nonlinear system identification procedures estimate the system parameters in two stages. First, the nominally linear system parameters are estimated by exciting the system at an amplitude (usually low) where the behavior is nominally...

...Chulho Yang; Douglas E. Adams; Sam Ciray A novel method of experimental sensitivity analysis for nonlinear system identification of mechanical systems is examined here. It has been shown previously that embedded sensitivity functions, which are quadratic algebraic products of frequency response...

... whip agrees well with the numerically simulated one. In addition, the results are consistent with phenomena observed in tests. 24 02 2003 01 12 2004 rotors stators vibrations structural acoustics mechanical contact nonlinear systems electric machines wear Rotor...

.... Previous studies have shown that input shaping can be used on linear systems to produce point-to-point motion with no residual vibration. This paper extends command-shaping theory to nonlinear systems, specifically systems with Coulomb friction. This idea is applied to a PD-controlled mass with Coulomb...

... to contradiction between experiments and theory. This contradiction draws the attention to the limitations of the small parameter approach related to the highly interrupted cutting condition. milling milling machines cutting tools vibrations nonlinear systems bifurcation High-speed milling usually...