scholarly journals Nonlinear Unknown‐Input Observer‐Based Systems for Secure Communication

2017 ◽  
Author(s):  
Robert N.K. Loh ◽  
Manohar K. Das
Keyword(s):  
Secure Communication ◽  
Unknown Input ◽  
Unknown Input Observer

Nonlinear unknown input observer using mean value theorem and genetic algorithm

2019 ◽  
Vol 10 (02) ◽  
pp. 1950001 ◽  
Author(s):  
Ramzi Ben Messaoud
Keyword(s):  
Genetic Algorithm ◽  
Secure Communication ◽  
Estimation Error ◽  
Mean Value ◽  
Stability Study ◽  
Observer Design ◽  
Theoretical Development ◽  
Mean Value Theorem ◽  
Unknown Input ◽  
Unknown Input Observer

In this note, we consider a new unknown input observer design for nonlinear systems. The main idea consists in determining the estimation error and mean value theorem parameters ([Formula: see text]) to introduce them into proposed observer structure. This process is designed on the basis of mean value theorem and genetic algorithm. The stability study relies on the use of a classical quadratic Lyapunov function. The observer’s gains are determined systematically. For the validation of theoretical development proposed in this paper, we consider two practical realizations that deals with the secure communication problem.

scholarly journals Robust Fault-Tolerant Control of an Electro-Hydraulic Actuator With a Novel Nonlinear Unknown Input Observer

IEEE Access ◽  
2021 ◽  
Vol 9 ◽  
pp. 30750-30760
Author(s):  
Van Du Phan ◽  
Cong Phat Vo ◽  
Hoang Vu Dao ◽  
Kyoung Kwan Ahn
Keyword(s):  
Fault Tolerant ◽  
Fault Tolerant Control ◽  
Unknown Input ◽  
Unknown Input Observer ◽  
Hydraulic Actuator

Investigation of unknown input observer for sensor fault diagnosis for a CSTR process

2021 ◽  
Author(s):  
V. Kamatchi Kannan ◽  
R. Srimathi ◽  
V. Gomathi ◽  
R. Valarmathi ◽  
L.T. PrithiEkammai
Keyword(s):  
Fault Diagnosis ◽  
Unknown Input ◽  
Unknown Input Observer ◽  
Sensor Fault
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