System Modeling and Faults Diagnosis of a Five Hydraulic Tanks
Abstract
In this paper, system modeling is studied; simulation and faults diagnosis of a linear system using five tanks. The system was modeled using differential equation and the model was implemented using Matlab/Simulink. A method of generating residuals of a linear system, subject to unknown inputs, is proposed. The impact of disturbances and uncertainty may create difficulties at the decision stage of diagnosis (false alarm); this has resulted to use a robust Unknown Inputs Observer (UIO). The faults will be isolated by using a bank of UIOs in the framework of the Dedicated Observer Scheme (DOS).Finally, simulations results of the five tanks system are given to show the effectiveness of the proposed methods
Keywords
unknown inputs observer, residual generation, Dedicated Observer Scheme (DOS), diagnosis, fault detection