Optimal Robust Controller Design for a Reduced Model AVR System Using CDM and FOPIλDμ

Abstract

Coefficient diagram method (CDM) is yet to be explored in many domains of fractional order control system design. In this research, an optimal non-integer PIλDμ controller is incorporated with the CDM method for regulating the terminal voltage of the reduced model of an automatic voltage regulator (AVR) system. In order to enhance the behaviour of the AVR system, parameters of the proposed PIλDμ controller are considered with the merits of CDM control strategy. A controller of fractional-order is designed using CDM and its effectiveness is collated with the conventional technique. Simulation results demonstrate that the standard performance characteristics are fully achieved by the CDM- FOPIλDμ controller.