Premium
Adaptive control for switched uncertain nonlinear systems with time‐varying output constraint and input saturation
Author(s) -
Chen Aiqing,
Tang Li,
Liu YanJun,
Gao Ying
Publication year - 2019
Publication title -
international journal of adaptive control and signal processing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.73
H-Index - 66
eISSN - 1099-1115
pISSN - 0890-6327
DOI - 10.1002/acs.3036
Subject(s) - control theory (sociology) , backstepping , nonlinear system , bounded function , saturation (graph theory) , constraint (computer aided design) , controller (irrigation) , fuzzy logic , lyapunov function , mathematics , tangent , adaptive control , computer science , control (management) , mathematical analysis , physics , geometry , quantum mechanics , combinatorics , artificial intelligence , agronomy , biology
Summary This paper is concerned with adaptive tracking control for switched uncertain nonlinear systems, which contain the time‐varying output constraint (TVOC) and input asymmetric saturation characteristic. In response to the unknown functions, the fuzzy logic systems are adopted. The controller is constructed by the backstepping technique. Based on the Tangent Barrier Lyapunov Function (BLF‐Tan), an adaptive switched control scheme is designed. It is demonstrated that all signals in the resulted system are semiglobally uniformly ultimately bounded with TVOC under arbitrary switchings. Furthermore, the effectiveness of presented control method is validated via the simulation example.