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Chapter 7. Conclusions and Future Research Directions 7.2.2 Explicit/Multi-Parametric MPC Controller of PSA An explicit/multi-parametric MPC is designed for purity control of an industrial scale four bed PSA system, employing a rigorous framework comprising of four main steps towards formulation and testing of the controller. Since the original PDAE model cannot be used for control purposes, reduced (linear) models are obtained by the application of advanced system identification techniques. Fur- thermore, detailed comparative studies are also performed to test the mp-MPC controller performance with the standard (optimized) PID controllers. 7.2.3 Simultaneous Design and Control Optimization of PSA Under Uncertainty An optimal design and control configuration of PSA separation system used for hydrogen purification purposes is obtained by employing the simultaneous design and control methodology. The unified design and control formulation considered in this work incorporates the complex interaction between the design objective, PSA recovery and the control objective, purity control in addition to taking into account the important PSA design, operational, controller constraints, and also the time variant and invariant disturbances in process conditions. Detailed com- parison studies are also conducted to compare the design and control configura- tion obtained from the simultaneous with the sequential approach, and also to compare the closed loop performance from optimized PI with mp-MPC controller. 7.2.4 Design of a Hybrid PSA-Membrane Separation Sys- tem A novel hybrid separation system consisting of four bed, nine step PSA with CO2 selective membrane module at its downstream has been designed to produce high 168PDF Image | Operation and Control of Pressure Swing Adsorption Systems
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