Joint interval state and actuator fault estimation for linear discrete-time delayed systems

2021 ◽  
Author(s):  
Naima Sehli ◽  
Kaouther Ibn Taarit ◽  
Zhenhua Wang ◽  
Tarek Raissi ◽  
Moufida Ksouri
Keyword(s):  
Discrete Time ◽  
Fault Estimation ◽  
Actuator Fault ◽  
Delayed Systems

Actuator Fault Estimation Based on Proportional Integral Observer for Discrete-Time Switched Systems

2018 ◽  
Vol 141 (3) ◽  
Author(s):  
Abdellah Benzaouia ◽  
Kenza Telbissi
Keyword(s):  
Discrete Time ◽  
Switched Systems ◽  
Sufficient Conditions ◽  
Fault Estimation ◽  
Linear Matrix ◽  
Actuator Fault ◽  
New Approach ◽  
Unknown Disturbance ◽  
Multiple Lyapunov Functional ◽  
Fault Information

This paper presents a new approach of actuator fault estimation (FE) for discrete-time switched systems against unknown disturbance. The proposed FE approach uses a new switching observer methodology, which allows to obtain fast and exact fault information. Sufficient conditions are achieved by using multiple Lyapunov functional. These conditions are manipulated in a simple way in order to obtain a new linear matrix inequality (LMI) with slack variables and observer gains matrices. Finally, two illustrative examples are performed to prove the effectiveness of the proposed method.

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