RELAY IDENTIFICATION BY ANALYZING NONSYMMETRICAL OSCILLATIONS FOR SINGLE INTEGRATOR WITH TIME DELAY

The paper deals with approximation of systems with the dominant first order dynamics and nonsymmetrical input by the Integrator Plus Dead Time (IPDT) model by means of analysis of the nonsymmetrical oscillations arising under relay control. The results achieved by identification of optical plant are then experimentally verified by Disturbance Observer (DOB) based controller.