Experimental application of an observer-based feedback linearizing controller to an electromagnetic suspension

This paper develops and applies experimentally a stabilizing observer-based feedback linearizing controller for a single-axis electromagnetic suspension. The controller uses only the measured output of the system, and it is continuous, and non-adaptive. Experiments are performed to compare a linear feedback controller and the observer-based feedback linearizing controller. Results obtained demonstrate that the nonlinear controller yields superior performance when compared with the linear feedback controller