Model‐free fault‐tolerant control approach for uncertain state‐constrained linear systems with actuator faults

• DOI: 10.1002/acs.2695
• Publication Date: 2016-05-25T09:01:16Z
• Authors: Chun‐Hua Xie; Guang‐Hong Yang
• Keywords: 0209 industrial biotechnology; 02 engineering and technology

Summary This paper investigates the robust adaptive fault‐tolerant control problem for state‐constrained continuous‐time linear systems with parameter uncertainties, external disturbances, and actuator faults including stuck, outage, loss of effectiveness. It is assumed that knowledge system matrices, as well upper bounds disturbances faults, unknown. By incorporating a barrier‐function like term into Lyapunov function design, novel model‐free scheme proposed in parameter‐dependent form, state constraint requirements are guaranteed. The time‐varying parameters adjusted online based on an method to prevent states from violating constraints compensate automatically faults. time‐invariant solved by using data‐based policy iteration algorithm introduced helping stabilize system. Furthermore, it shown converge asymptotically zero without transgression all signals resulting closed‐loop uniformly bounded. Finally, two simulation examples provided show effectiveness approach. Copyright © 2016 John Wiley & Sons, Ltd.