Observer‐Based Preview Sliding Mode Tracking Control of Discrete‐Time T‐S Fuzzy System With Input Saturation

ABSTRACT This paper investigates the observer‐based sliding mode tracking problem of the discrete‐time fuzzy system with input saturation via a previewable information approach. Firstly, an augmented system (AS) containing discrete‐time integrators and previewable reference signals is established for the discrete‐time T‐S fuzzy system based on a previewable length. Secondly, a sliding surface and a sliding preview controller are given, which can guarantee the asymptotic stability of the quasi‐sliding motion and the reachability of the sliding region. Finally, a simulation example is given to demonstrate the effectiveness of the proposed control law.