A Quasi-ARX Model for Multivariable Decoupling Control of Nonlinear MIMO System

Abstract EN

This paper proposes a multiinput and multioutput (MIMO) quasi-autoregressive eXogenous (ARX) model and a multivariable-decoupling proportional integral differential (PID) controller for MIMO nonlinear systems based on the proposed model.

The proposed MIMO quasi-ARX model improves the performance of ordinary quasi-ARX model.

The proposed controller consists of a traditional PID controller with a decoupling compensator and a feed-forward compensator for the nonlinear dynamics based on the MIMO quasi-ARX model.

Then an adaptive control algorithm is presented using the MIMO quasi-ARX radial basis function network (RBFN) prediction model and some stability analysis of control system is shown.

Simulation results show the effectiveness of the proposed control method.