Design of Fractional order controller via CRONE Principle for Time Delayed systems

Abstract

A new technique is formulated for design of fractional order controller via internal model control technique using fractional filter and CRONE principle in this paper. The proposed technique is explained for integer and fractional order, minimum and non-minimum phase system having a time delay. The controller obtained via the proposed approach can be written as a series combination of a fractional order proportional-integral-derivative control structure and a fractional-order filter. The supremacy of proposed approach is demonstrated through different numerical examples and an extensive comparative analysis is also undertaken. Further, the robustness of proposed scheme is evaluated via introduction of interval uncertainty into the system. The simulation results for different cases exhibit the superiority and strength of the proposed technique.