Fuzzy control of singular fractional order multi-agent systems with actuator saturation.

In this paper, a T-S fuzzy model is established to describe nonlinear fuzzy singular fractional order multi-agent systems (SFOMASs) exhibiting actuator saturation when the order is between 0 and 2. We focus on the case where the system state is difficult to measure or cannot be directly measured, so it needs to be estimated based on other measurable signals. To this end, a fuzzy observer is designed, which can process fuzzy or imprecise input and output signals through fuzzy processing. Then the observer-based leader-following consensus problem of fuzzy SFOMASs with actuator saturation is addressed. To address input saturation, we use some mathematical tools to represent the saturated linear feedback on the convex hull, which is then transformed into seeking the optimal solution of linear matrix inequalities (LMIs). Finally, the effectiveness of the proposed approach is verified through the adoption of a numerical example. • A T-S fuzzy model is built to describe SFOMASs with fractional order in the interval (0 , 2). • A fuzzy observer is designed to handle fuzzy or imprecise input and output signals through fuzzification processing. • The observer-based leader-following consensus of fuzzy SFOMASs with actuator saturation is achieved. [ABSTRACT FROM AUTHOR]