D RM Builder: A software tool for generating fast and accurate nonlinear dynamic reduced models from high fidelity models
Abstract Dynamic reduced models (D RMs) derived from rigorous models are highly desired for speeding up dynamic simulations. A useful software tool named D RM Builder was developed to automatically generate data driven D RMs from high fidelity dynamic models. It allows a user to configure input/output variables, sample input space and generate sequences of step changes, launch high fidelity model simulations, fit simulation results to a D RM, and finally visualize and validate the D RM. The Decoupled A B Net (DABNet) nonlinear system identification model was used as the main D RM type and was enhanced to model nonlinear multiple input and multiple output dynamic systems with options for double pole formulation to handle fast/slow time scales and pole value optimization. The D RM Builder tool has been successfully used to generate D RMs for a highly nonlinear pH neutralization reactor system and a two time scale bubbling fluidized bed adsorber reactor for CO2 capture.
Comput. Chem. Eng.