... driveshaft U-joint nonlinear system Sommerfeld effect One of the key parts of this model will be to accurately capture the drivesystem rotordynamics which will be especially important at higher rotational speeds and torque levels. To accommodate angular misalignment and center offsets, most...

...Shy-Leh Chen; Jin-Wei Liang; Keng-Chu Ho This study addresses the identification of nonlinear systems. It is assumed that the function form in the nonlinear system is known, leaving some unknown parameters to be estimated. Since Haar wavelets can form a complete orthogonal basis for the appropriate...

... with general nonlinearity. The analytical approximations are mathematically formulated by combining piecewise approximate solutions from such two new nonlinear systems. The third-order analytical approximation with better accuracy is proposed here and compared with other numerical and approximate methods...