Extension of relay feedback identification

This paper introduces a simple technique extending possibilities of the relay feedback identification. The approach enables to estimate five parameters of the transfer function from a single test using an asymmetric relay to generate sustained oscillations. The method offers a tool for a large class of common control problems. The applicability of the suggested simple technique is demonstrated by estimating five parameters of the anisochronic model. All simulations were performed in the Matlab/Simulink programming environment.