Robust H∞ control of nonlinear plants based on multi-linear models : an application to a bench-scale pH neutralization reactor

摘要: This work is aimed at developing a methodology to design controllers for nonlinear plants where desirable robustness and performance properties must be maintained across large range of operating conditions. The approach based on the multi-linear model representation H∞ control that allows inclusion plant nonlinearities by representing original system as set local uncertain linear plants. To assess merits proposed technique, experiments are performed bench-scale pH neutralization reactor. results demonstrate robust stability in presence disturbances set-point variations.