The Identification of Nonlinear Systems Using Ct-Kt Plane Coordinates

الملخص EN

In order to instantaneously distinguish the Ct (coefficient of viscous damping) and Kt (coefficient of stiffness), which are both functions of time in an M.C.K.

nonlinear system, a new identification method is proposed in this paper.

The graphs of the Ct-Kt are analyzed and the dynamic behavior of M.C.K.

systems in a Ct-Kt coordinate plane is discussed.

This method calculates two adjacent sampling data, the displacement, velocity, and acceleration (which are obtained from the responses of a pulse response experiment) and then distinguishes Ct and Kt of an instantaneous system.

Finally, this method is used to identify the aerostatic bearing dynamic parameters, C and K.