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This work applies the method of fault-detection, and isolation for nonlinear processes when some process variable measurements are available at regular sampling intervals and the remaining process variables are measured at an asynchronous rate to a gas-phase polyethylene reactor model. First, the fault-detection and isolation (FDI) scheme that employs model-based techniques for the isolation of faults...
Model-predictive control algorithms are applied to a high capacity reverse osmosis (RO) membrane desalination process simulation that utilizes feed flow-reversal in order to prevent and/or reverse scale crystal formation on the membrane surface. A dynamic non-linear model which incorporates feed concentration and membrane properties is used for simulation and demonstration of optimally controlled...
Feed-forward/feedback control techniques that utilize Lyapunov-based control laws are implemented on a high recovery reverse osmosis desalination plant model. A detailed mathematical model of a high recovery reverse osmosis plant is developed. This model incorporates the large spatial variations of concentration and flow-rate that occur in membrane units during high recovery operation. Bounded nonlinear...
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