Non-fragile Multiple-model Switching Control for Nonlinear Systems

This paper proposes a non-fragile multi- model switching control for a class of nonlinear systems based on local T-S models. First of all, the input space is divided into multiple regions, local T-S models and controllers are designed in each region, such that the approach precision improves as the fuzzy domain decreases under a constant fuzzy rule. Then, a region controller, which is chosen according to the selected variables by the multiple-model switching control, is switched to the whole controller and that other controllers do not operate, the approach and control of the entire nonlinear system is therefore established. At the same time, the design scheme of non-fragile state-feedback controllers is developed in the presence of additive controller gain perturbations. The effectiveness of the proposed method is demonstrated by the simulation results.