Discrete Sliding Control of Nonlinear Non affine Systems Using Neural Network and Approximate Models

In this paper, an indirect combined controller is proposed for non-affine nonlinear systems based on affine approximate input-output model of the system. Here, the NARMA model, which is an exact representation of the input-output model, is approximated with an affine input-output model. The conventional controllers which are based on this approximated model dose not guarantee good performance of the closed-loop system for large magnitude control signal so, in this paper a robust combined controller is proposed which guarantees a reliable performance for the closed-loop system, even for considerable model approximation errors.

کلیدواژه ها:

Sliding mode ، nonlinear systems ، neural networks ، model approximation