Robust non-linear control and tracking design scheme for multi-input multi-output (MIMO) non-linear perturbed plants are considered, that is, robust stability and output tracking performance are studied by using operator-based robust right coprime factorisation approach. Some sufficient conditions for the MIMO nonlinear perturbed plants are derived. By using these conditions, the obtained control and tracking systems are robustly stable, and the desired output tracking performance is realised. Finally, two general examples and one example about the application to a three-input/three-output aluminium plate are given to initially demonstrate the theoretical analysis.

No abstract

In this article, operator-based robust control design for nonlinear plants with perturbation is considered by using robust right coprime factorisation approach. In detail, the property of unimodular operator is studied, and a control design structure is proposed. Based on the proposed design scheme, the designed system is robustly stable. Also, output tracking performance can be realised simultaneously. Finally, the effectiveness of the proposed design scheme is demonstrated by a simulation example.

No abstract

No abstract