Adaptive fuzzy output regulation of uncertain pure‐feedback non‐linear systems with prescribed performance

• DOI: 10.1049/iet-cta.2020.0482
• Publication Date: 2021-02-11T02:29:04Z
• Authors: Fujin Jia; Junwei Lu; Yongmin Li; Yang Liu
• Keywords: Tracking error; Observer (physics)

The output regulation problem for pure-feedback non-linear systems with prescribed performance (PP) driven by an external linear system unknown parameter are investigated. First, observer a disturbance signal is designed to observe unmeasured states. Secondly, fuzzy logic (FLS) used approximate non-affine functions. Thirdly, internal model obtained reject disturbance, and adaptive feedback algorithm proposed based on dynamic surface control (DSC) technique backstepping method. Simultaneously, L function constructed so that the overall property (steady-state property) of tracking error constrained PP results explain can make sure all signals closed-loop semi-globally uniformly ultimately bounded (SUUB), (SPPUUB). Finally, two examples given show validity results.