Improved Fractional Order Relay For Unstable and Higher Order Stable Processes

Relay is one method employed for identification, but it introduces error in the identification process. Therefore, in this paper, fractional order controller is introduced in parallel with the ideal relay. In proposed fractional order relay, obtaining the accurate value of is a primary concern. Hence, an analytical approach is employed to design the value of accurately. The proposed scheme is validated by making the comparison in the harmonic contents present in the output signal of the proposed relay, the existing modified relay proposed in literature and ideal relay by considering two stable processes and one unstable process through simulation.