scholarly journals Switched Concurrent Learning Adaptive Control of Switched Systems With Nonlinear Matched Uncertainties

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 33560-33573 ◽  
Author(s):  
Caiyun Wu ◽  
Jiao Li ◽  
Ben Niu ◽  
Xiaoping Huang
Keyword(s):  
Adaptive Control ◽  
Switched Systems ◽  
Concurrent Learning

scholarly journals State Tracking of MRAC Systems in the Presence of Controller Temporary Failure Based on a Switching Method

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Caiyun Wu ◽  
Jun Zhao
Keyword(s):  
Adaptive Control ◽  
Switched Systems ◽  
Sufficient Conditions ◽  
Practical Stability ◽  
Tracking Problem ◽  
Failure Frequency ◽  
Error System ◽  
State Tracking ◽  
Switching Method ◽  
Model Reference Adaptive

The state tracking problem for a class of model reference adaptive control (MRAC) systems in the presence of controller temporary failures is studied. Due to the controller temporary failure, the considered system is viewed as an error switched system. The properties of Lyapunov function candidates without switching are described. Then the notion of global practical stability of switched systems is presented, and sufficient conditions for global practical stability of the error system under the restrictions of controller failure frequency and unavailability rate are provided. An example is presented to demonstrate the feasibility and effectiveness of the proposed method.

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