Abstract
AbstractIn this paper, sensor fault detection and isolation schemes are proposed. Fault detection and isolation techniques are used in fail safe control systems such as aerospace. In these systems, failures can cause to arise undesirable results. Using model based approaches, sensor faults can be detected and isolated. To detect sensor faults, some kind of observers can be used while isolating the faulty sensors, some kind of schemes can be used. In this study, sensor fault detection and isolation are obtained on an aircraft lateral flight control system using model based approaches. Full Order Observer and Reduced Order Observer are used for sensor fault detection while Dedicated Observer Scheme (DOS) and Generalized Observer Scheme (GOS) are used for sensor isolation. Fault detection and fault isolation methods are analyzed and compared with each other.
Highlights
Sensor faults in the systems are detected by setting thresholds on residuals generated from the difference between real system measurements and estimates of the system measurements using the model
Full Order Observer and Reduced Order Observer are used for sensor fault detection while Dedicated Observer Scheme (DOS) and Generalized Observer Scheme (GOS) are used for sensor isolation
In this study, using model based approaches, sensor fault detection and isolation is obtained on an aircraft lateral flight control
Summary
Sensor faults in the systems are detected by setting thresholds on residuals generated from the difference between real system measurements and estimates of the system measurements using the model. Göksu and Hava studied estimation methods on different motor They investigated a hybrid algorithm using flux observer. Kunt and Sabanovic formulated a framework which allows identifying system parameters and observing system states through measurements taken from the actuator side They performed on an inertial lumped flexible system with three degrees of freedom. They claimed that the study results demonstrate the validity of the proposed technique where the difference between the identified parameters and the actual known previously ones is less than five percent [9]. Full Order Observer and Reduced Order Observer are used for sensor fault detection while Dedicated Observer Scheme (DOS) and Generalized Observer Scheme (GOS) are used for sensor isolation. Advantages and disadvantages are seen on simulations using Matlab program
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