Abstract The purpose of this paper is to investigate the vibration characteristics and motion random magnetic bearing systems with narrow band noise. Firstly, multiple scale method used obtain averaged equations. Secondly, it found that there exist different motions various excitation forces permeability values by bifurcation diagram maximum Lyapunov exponent based on resulting average Finally,...

Development of robust and highly sensitive algorithms for detecting incipient bearing faults in gas turbine engines will greatly benefit both military and civil aviation through improved aircraft reliability and maintainability. Techniques including advanced vibration analysis and oil debris monitoring have proven effective in laboratory and industrial settings, but factors including poor trans...

Optimal pacing strategies for cycling time trials have been treated in literature in numerous publications, e.g. Gordon (2005). Generally, the minimum time pacing is sought subject to a mechanical model and a physiological model. The mechanical model (Martin, 1998) comprises the pedaling power P and forces for gravity on a cycling track of varying slope, rolling resistance, aerodynamic drag, fr...

Significant improvements have been made in the performance of CNC machine tools due to the active research over the last several decades. However, the research and understanding on chucking accuracy have not been adequate. Nor has any systematic methods been reported for on chucking accuracy, especially in terms of the repeatability and the accuracy in the position of a chucked workpiece. The n...