Control of Inverse Response Processes by Direct Synthesis Control: A CSTR Case Study

This paper proposes a Direct Synthesis Controller (DSC) for inverse response nonlinear processes. The method utilizes the direct synthesis framework to design a controller that takes into account the process's inverse response characteristics and nonlinearities. A systematic design procedure ensures stability and enhances set-point tracking and disturbance rejection. The approach's effectiveness is demonstrated through simulations of benchmark nonlinear processes with inverse response behavior. A comparative analysis reveals that the DSC outperforms conventional control strategies in terms of transient response, steady-state accuracy, and robustness to model uncertainties. The results highlight the DSC's potential as a viable solution for controlling complex, inverse-response, nonlinear systems in industry.