摘要：AbstractThe problem of robustly controlling open-loop bistable tubular gasification reactors about its ignition stable SS is addressed. To attenuate the effect of measured and unmeasured disturbances on closed-loop (CL) stability and caloric yield, the air feed flow must be adjusted on the basis of flow as well as inside point temperature measurements. The consideration of the problem as an efficient finite-dimensional model-based interlaced control-observer design yields a robust dynamic nonlinear (NL) output feedback (OF)-feedforward (FF) controller: (i) made by the combination of a passive NL state feedback (SF)-feedforward (FF) controller with a NL geometric (G) state estimator, and (ii) with CL stability conditions accompanied by gain tuning and sensor location guidelines. The approach is applied, through numerical simulations, to a 10-component 1-temperature and 2-flow stratified gasification reactor, finding that the nonlinear OF dynamic controller (made of 91 ODEs and 300 AEs) robustly stabilizes the reactor with preclusion of undesired SS ignition-to-extinction caused by solid feed disturbances.
