Application of the Decoupling Control Scheme Based on RBFN Inverse Dynamic Modeling for Non-linear Multi-variable System

An inverse control strategy based on RBFN with feed forward was presented in this paper. The non-linear multi-variable system was controlled by an decoupled the control method. Three inputs of the plant were identified by three RBFNS. Three dynamic pseudo linear systems were formed through the models of controllers and the plants are in series to decouple into three independent pseudo-linear plant. So we can use linear method to control those plants. The decoupling scheme of inverse control based on RBFN and PD control is designed, which is applied to LF electrode system successfully in third iron steel plant of Lianyungang P.R. China. The results show the feasibility and effectiveness of the strategy.