Design and Implementation of an Advanced Hybrid Control Strategy for Nonlinear Industrial Process

The work aims to develop an advanced hybrid controller for a nonlinear Spherical Tank Level System (STLS). It does so by combining two nonlinear control techniques, the Fractional Order Proportional Integral (FOPI) controller and the Sliding Mode Controller (SMC), which results in a hybrid controller and takes the name of Fractional Order Sliding Mode PI Controller (FO-SMPIC). The proposed FO-SMPIC control system is designed using the worst-case model of the STLS. Simulations of the nonlinear STLS are executed with the proposed control strategy for servo tracking and existing control strategies such as the Proportional Integral (PI) controller and the Fractional Order Proportional Integral (FOPI) controller. Finally, the effectiveness and performance of the FOSMPIC approach are examined through error analysis in terms of ISE and IAE. Experimental outcomes are obtained to confirm the simulation results, and it is proven that the FO-SMPIC approach outperforms all other methods in terms of different time integral performance metrics.

کلیدواژه ها:

FOPI ، SMC ، FO-SMPIC ، Spherical Tank ، Oustaloup recursive filter